Jun. 2018 - Present: Postdoctoral research associate in Center for Clean Energy Technology, School of Mathematical and Physical Sciences, Faculty of Science, University of Technology Sydney
Sep. 2014 - Jan. 2018: Ph.D. in Materials Science and Engineering, School of Materials Science and Engineering, Tsinghua University
Sep. 2011 - Jan. 2014: M.S. in Materials Science, School of Materials and Engineering, Tianjin Universty
Sep. 2007 - Jul. 2011: B.S. in Materials Science and Engineering, School of Materials Science ad Engineerin, Xi'an University of Architecture and Technology
- Tsinghua University Excellent Doctoral Dissertation Award (First Prize) Jul. 2018
- Best Poster Award for "15th Korea-China-Japan Joint Symposium on Carbon Saves the Earth 2017", Sep. 2017
- Best Pster Award for "International Forum on Graphene 2016", Apr. 2016
- National Scholarsip for Doctoral Students, Oct. 2016 & Oct. 2017
- Nationl Scholarship for Master Students, Nov. 2013
- National Scholarship for Undergraduates, Oct. 2009
- Excellent Graduates of Beijing, Dec. 2017
Zinc-ion hybrid supercapacitors (ZHSs);
Zinc-ion batteries (ZIBs)
Yang, W, Yang, W, Dong, L, Gao, X, Wang, G & Shao, G 2019, 'Enabling immobilization and conversion of polysulfides through a nitrogen-doped carbon nanotubes/ultrathin MoS2 nanosheet core-shell architecture for lithium-sulfur batteries', Journal of Materials Chemistry A, vol. 7, no. 21, pp. 13103-13112.View/Download from: Publisher's site
© 2019 The Royal Society of Chemistry. Lithium-sulfur batteries are widely considered as promising next generation energy storage devices due to their high energy density and low cost. However, the shuttle effect and sluggish kinetics of polysulfide conversion are still key challenges for practical application. Herein, we designed hierarchical nitrogen-doped carbon nanotubes/ultrathin molybdenum disulfide nanosheets in a core-shell architecture (denoted as NC@MoS2) to alleviate the shuttle effect and propel redox reaction kinetics, thereby improving the electrochemical performance of lithium-sulfur batteries. Both experimental investigations and theoretical studies reveal that MoS2 nanosheets can chemically immobilize lithium polysulfides and catalyze the conversion of polysulfides. Moreover, this unique core-shell architecture could facilitate rapid electrical transport and favorable electrolyte infiltration. We have demonstrated that the obtained S-NC@MoS2 cathodes exhibit excellent rate capability (516 mA h g-1 at 5C) and superior cycle stability (only 0.049% capacity decay per cycle up to 1000 cycles at 2C). Remarkably, the composite cathode with a high sulfur loading of 3.6 mg cm-2 still maintains high rate capability and stable cycling performance over 300 cycles. This work offers a new strategy to develop high-performance lithium-sulfur batteries through the exploration of two-dimensional mediator catalysts.
Li, Y, Lv, Y, Guo, Z, Dong, L, Zheng, J, Chai, C, Chen, N, Lu, Y & Chen, C 2018, 'One-Step Preparation of Long-Term Stable and Flexible CsPbBr3 Perovskite Quantum Dots/Ethylene Vinyl Acetate Copolymer Composite Films for White Light-Emitting Diodes', ACS APPLIED MATERIALS & INTERFACES, vol. 10, no. 18, pp. 15888-15894.View/Download from: Publisher's site
Wang, J, Dong, L, Xu, C, Ren, D, Ma, X & Kang, F 2018, 'Polymorphous Supercapacitors Constructed from Flexible Three-Dimensional Carbon Network/Polyaniline/MnO2 Composite Textiles.', ACS applied materials & interfaces, vol. 10, no. 13, pp. 10851-10859.View/Download from: UTS OPUS or Publisher's site
Polymorphous supercapacitors were constructed from flexible three-dimensional carbon network/polyaniline (PANI)/MnO2 composite textile electrodes. The flexible textile electrodes were fabricated through a layer-by-layer construction strategy: PANI, carbon nanotubes (CNTs), and MnO2 were deposited on activated carbon fiber cloth (ACFC) in turn through an electropolymerization process, "dipping and drying" method, and in situ chemical reaction, respectively. In the fabricated ACFC/PANI/CNTs/MnO2 textile electrodes, the ACFC/CNT hybrid framework serves as a porous and electrically conductive 3D network for the rapid transmission of electrons and electrolyte ions, where ACFC, PANI, and MnO2 are high-performance supercapacitor electrode materials. In the electrolyte of H2SO4 solution, the textile electrode-based symmetric supercapacitor delivers superior areal capacitance, energy density, and power density of 4615 mF cm-2 (for single electrode), 157 μW h cm-2, and 10372 μW cm-2, respectively, whereas asymmetric supercapacitor assembled with the prepared composite textile as the positive electrode and ACFC as the negative electrode exhibits an improved energy density of 413 μW h cm-2 and a power density of 16120 μW cm-2. On the basis of the ACFC/PANI/CNTs/MnO2 textile electrodes, symmetric and asymmetric solid-state textile supercapacitors with a PVA/H2SO4 gel electrolyte were also produced. These solid-state textile supercapacitors exhibit good electrochemical performance and high flexibility. Furthermore, flexible solid-state fiber-like supercapacitors were prepared with fiber bundle electrodes dismantled from the above composite textiles. Overall, this work makes a meaningful exploration of the versatile applications of textile electrodes to produce polymorphous supercapacitors.
Pan, Z-Z, Nishihara, H, Lv, W, Wang, C, Luo, Y, Dong, L, Song, H, Zhang, W, Kang, F, Kyotani, T & Yang, Q-H 2018, 'Microhoneycomb Monoliths Prepared by the Unidirectional Freeze-drying of Cellulose Nanofiber Based Sols: Method and Extensions.', Journal of visualized experiments : JoVE, no. 135.View/Download from: UTS OPUS or Publisher's site
Monolithic honeycomb structures have been attractive to multidisciplinary fields due to their high strength-to-weight ratio. Particularly, microhoneycomb monoliths (MHMs) with micrometer-scale channels are expected as efficient platforms for reactions and separations because of their large surface areas. Up to now, MHMs have been prepared by a unidirectional freeze-drying (UDF) method only from very limited precursors. Herein, we report a protocol from which a series of MHMs consisting of different components can be obtained. Recently, we found that cellulose nanofibers function as a distinct structure-directing agent towards the formation of MHMs through the UDF process. By mixing the cellulose nanofibers with water soluble substances which do not yield MHMs, a variety of composite MHMs can be prepared. This significantly enriches the chemical constitution of MHMs towards versatile applications.
Hao, J, Mou, J, Zhang, J, Dong, L, Liu, W, Xu, C & Kang, F 2018, 'Electrochemically induced spinel-layered phase transition of Mn3O4 in high performance neutral aqueous rechargeable zinc battery', Electrochimica Acta, vol. 259, pp. 170-178.View/Download from: UTS OPUS or Publisher's site
© 2017 Elsevier Ltd Mn3O4 is an electrochemically inactive in alkaline Zn–MnO2 battery. Here, we show that Mn3O4 shows superior electrochemical performance in mild aqueous zinc sulfate electrolytes. Mn3O4 can be a new cathode material for neutral aqueous rechargeable zinc battery. Results reveal that spinel Mn3O4 transforms to intermediate Mn5O8 and finally to Zn-birnessite. The initial charge cycle proceeds without participation of zinc ions, while zinc ions participate in the subsequent reaction. The intercalation of zinc ions into the interlamination of birnessite leads to the generation of Zn-birnessite in discharge process, accompanied by the reduction of Mn4+ to Mn3+. Our results demonstrate a new manganese oxide cathode with average Mn valence state lower than four for rechargeable zinc batteries.
Cheng, J, Chen, S, Chen, D, Dong, L, Wang, J, Zhang, T, Jiao, T, Liu, B, Wang, H, Kai, JJ, Zhang, D, Zheng, G, Zhi, L, Kang, F & Zhang, W 2018, 'Editable asymmetric all-solid-state supercapacitors based on high-strength, flexible, and programmable 2D-metal-organic framework/reduced graphene oxide self-assembled papers', Journal of Materials Chemistry A, vol. 6, no. 41, pp. 20254-20266.View/Download from: UTS OPUS or Publisher's site
© 2018 The Royal Society of Chemistry. Although some progress has been made in flexible supercapacitors (SCs), their high energy density, mechanical robustness, and device-level editability and programmability are still highly desirable for the development of advanced portable and miniaturized electronics, especially considering the fact that these flexible devices are likely to experience some mechanical impact and potential damage. Herein, we demonstrate the fabrication of hybrid electrodes containing self-assembled 2D metal-organic framework (MOF)/reduced graphene oxide (rGO) papers, which not only efficiently alleviate the self-restacking of rGO and the MOF but also maintain high electrical conductivity (0.32 Ω cm), excellent flexibility and mechanical properties with a Young's modulus of 34.4 GPa and a tensile strength of 89.9 MPa. In addition, a one-for-two strategy is introduced to construct two types of porous electrodes for flexible asymmetric SCs via a one MOF-derived synthesis route with simply changing metal ion precursors. As a consequence, the flexible asymmetric SCs possess a high volumetric energy density of 1.87 mW h cm-3 and an outstanding volumetric power density of 250 mW cm-3. More importantly, the all-solid-state asymmetric SCs exhibit high editability and bending-tolerance properties and perform very well under various severe service conditions, such as being seriously cut, bent, and heavily loaded. Particularly, the operations of micro-SCs with artistically designed patterns are demonstrated. Being high-strength, easily programmable and connectable in series and in parallel, the editable supercapacitor is promising for developing stylish energy storage devices to power various portable, miniaturized, and wearable devices.
Dong, L, Liang, G, Xu, C, Ren, D, Wang, J, Pan, ZZ, Li, B, Kang, F & Yang, QH 2017, 'Stacking up layers of polyaniline/carbon nanotube networks inside papers as highly flexible electrodes with large areal capacitance and superior rate capability', Journal of Materials Chemistry A, vol. 5, no. 37, pp. 19934-19942.View/Download from: UTS OPUS or Publisher's site
© 2017 The Royal Society of Chemistry. Developing high-performance flexible film-like electrodes is still a primary task for the practical applications of wearable/portable planar supercapacitors. In this work, a facile and effective approach, i.e., stacking up layers of polyaniline (PANI)/carbon nanotube (CNT) composite networks inside air-laid papers, is proposed to fabricate highly flexible paper electrodes with large areal capacitance and superior rate capability. The layer-by-layer deposition of PANI/CNT networks endows the fabricated paper electrodes with high loading and uniform distribution of PANI; meanwhile, the good electrical conductivity and porous structure of these introduced PANI/CNT networks guarantee sufficient paths for electron movement and ion transportation in the electrodes. Consequently, when 4 layers of PANI/CNT networks (with optimal PANI content) are stacked inside papers, the areal capacitance of the prepared electrode is as high as 1506 mF cm-2at a charge/discharge current of 10 mA cm-2and 1298 mF cm-2at 100 mA cm-2; the electrode also exhibits high flexibility and good cycling stability (with 82% capacitance retention after 11 500 charge/discharge cycles). These merits make our PANI/CNT/papers promising candidates for flexible planar supercapacitor electrodes. Besides, this work is believed to provide a new thought for producing high-loading and high-energy wearable/portable energy storage devices.
Liu, W, Hao, J, Xu, C, Mou, J, Dong, L, Jiang, F, Kang, Z, Wu, J, Jiang, B & Kang, F 2017, 'Investigation of zinc ion storage of transition metal oxides, sulfides, and borides in zinc ion battery systems.', Chemical Communications, vol. 53, no. 51, pp. 6872-6874.View/Download from: UTS OPUS or Publisher's site
Zn-ion batteries have been widely investigated due to their low cost, high safety and eco-friendliness. We comprehensively evaluate the performance of oxides (MoO3, TiO2, and Fe3O4), sulfides (MoS2, WS2, and MnS) and borides (TiB2 and ZrB2) in zinc ion battery systems. It is found that MnS is a good alternative cathode material with a reversible capacity of 221 mA h g-1, while the other materials show different behaviours.
Cheng, J, Yang, X, Dong, L, Yuan, Z, Wang, W, Wu, S, Chen, S, Zheng, G, Zhang, W, Zhang, D & Wang, H 2017, 'Effective nondestructive evaluations on UHMWPE/Recycled-PA6 blends using FTIR imaging and dynamic mechanical analysis', Polymer Testing, vol. 59, pp. 371-376.View/Download from: UTS OPUS or Publisher's site
© 2017 Elsevier Ltd The noninvasive and nondestructive Fourier transform infrared (FTIR) imaging and dynamic mechanical analysis (DMA) are developed in this work to evaluate the microstructure-related properties of UHMWPE/Recycled-PA6 blends. FTIR imaging which is of in-situ and visualizing capabilities is shown to be extremely valuable in determining the phase structure of a multiphase system. It is found that small quantities of the HDPE-g-MAH compatibilizer could significantly improve the miscibility of the two immiscible polymers. It is further proved that in the UHMWPE/R-PA6 blends the R-PA6 phase distributes continuously, while the UHMWPE phase disperses in a discontinuous manner. Moreover, the blends with 44 wt% R-PA6 is found to exhibit an optimal miscibility behavior. This work demonstrates that FTIR imaging is a direct method in visualizing the miscibility of polymer blends. The combined FTIR imaging and DMA testing offers a new approach for qualitative and quantitative investigations on polymer blends with complex microstructures.
Dong, L, Liang, G, Xu, C, Liu, W, Pan, ZZ, Zhou, E, Kang, F & Yang, QH 2017, 'Multi hierarchical construction-induced superior capacitive performances of flexible electrodes for wearable energy storage', Nano Energy, vol. 34, pp. 242-248.View/Download from: UTS OPUS or Publisher's site
© 2017 Elsevier Ltd A multi hierarchical construction is designed for flexible supercapacitor electrodes. Specifically, we chose activated carbon fiber cloth (ACFC) as flexible substrates, deposited polyaniline (PANI) on fiber surface first, then constructed continuous carbon nanotube (CNT) networks between fibers and finally deposited PANI on the CNT networks to obtain ACFC/PANI/CNT/PANI textile electrodes. Repeated deposition of PANI and application of ACFC substrate lead to high content of electrochemically active materials (i.e., PANI and activated carbon fiber); meanwhile, these active materials are located in different locations in the electrodes (fiber itself, fiber surface and the space between fibers), thus avoiding serious aggregation. The fabricated electrodes exhibit superior capacitive performances: areal capacitance, energy density and power density are 4039 mF cm−2, 131 μW h cm−2and 11424 μW cm−2, respectively, remarkably higher than those of previously reported flexible supercapacitor electrodes; our electrodes also have good cycling stability and flexibility. Furthermore, high-performance thick electrodes (capacitance: 7804 mF cm−2; energy output: 214 μW h cm−2) and flexible fiber-like electrodes (capacitance: 805 mF cm−2; energy density: 23 μW h cm−2) are easily produced from our textile electrodes. This study offers a new direction for optimizing micro-structures and electrochemical properties of flexible electrodes in wearable energy storage devices.
Jiang, B, Xu, C, Wu, C, Dong, L, Li, J & Kang, F 2017, 'Manganese Sesquioxide as Cathode Material for Multivalent Zinc Ion Battery with High Capacity and Long Cycle Life', Electrochimica Acta, vol. 229, pp. 422-428.View/Download from: UTS OPUS or Publisher's site
© 2017 Elsevier Ltd Rechargeable zinc ion battery is considered as one of the most potential energy storage devices for large-scale energy storage system due to its safety, low-cost, high capacity and nontoxicity. However, only a few cathode materials have been studied for rechargeable zinc ion batteries. Here, we firstly report manganese sesquioxide (Mn2O3) with Mn(III) state as cathode material for rechargeable zinc ion battery. The α-Mn2O3cathode displays a reversible capacity of 148 mAh g−1, which is relatively high among all the reported cathode materials for ZIB. The cathode also exhibits good rate capability and excellent cycling stability with a long cycle life up to 2000 times. The ion storage mechanism of α-Mn2O3in zinc ion battery was also revealed. The pristine α-Mn2O3undergoes a reversible phase transition from bixbyite structure to layered-type zinc birnessite during the electrochemical zinc ion insertion and extraction. The results not only benefit for the practical application of rechargeable zinc ion battery, but also broaden the horizons of understanding the electrochemical behavior and mechanism of rechargeable zinc ion batteries.
Pan, Z-Z, Dong, L, Lv, W, Zheng, D, Li, Z, Luo, C, Zheng, C, Yang, Q-H & Kang, F 2017, 'A Hollow Spherical Carbon Derived from the Spray Drying of Corncob Lignin for High-Rate-Performance Supercapacitors', Chemistry - An Asian Journal, vol. 12, no. 5, pp. 503-506.View/Download from: UTS OPUS or Publisher's site
Controlling the microstructure of biomass-derived carbon is of essential importance for directing its use. Herein, a hollow spherical carbon (HSC) was prepared from corncob lignin through spray drying and subsequent heat treatment. The HSC, which is characterized by its hierarchically porous structure, delivers high rate capability when it is directly used as electrode material for supercapacitors. This strategy that uses lignin as the precursor avoids the intrinsic difficulty in tuning the microstructure of the biomass-derived carbons and is suitable for mass production for practical use.
Zhang, J, Dong, L, Xu, C, Hao, J, Kang, F & Li, J 2017, 'Comprehensive approaches to three-dimensional flexible supercapacitor electrodes based on MnO2/carbon nanotube/activated carbon fiber felt', Journal of Materials Science, vol. 52, no. 10, pp. 5788-5798.View/Download from: UTS OPUS or Publisher's site
© 2017, Springer Science+Business Media New York. With the fast development of portable and wearable devices, flexible supercapacitor electrodes are widely researched. Here, comprehensive approaches were designed to introduce carbon nanotube (CNT) and/or MnO2into activated carbon fiber felt (ACFF) using 'dipping and drying' method. Differences on micro-morphologies and electrochemical characteristics for prepared textiles were compared. High-performance flexible MnO2/CNT/ACFF composite electrodes were synthesized by introducing CNT and MnO2/CNT fillers successively. Compared with original ACFF textiles, significant improvements in electrochemical performance were achieved. Areal capacitance, energy density and power density of the composite textiles reached as high as 4148 mF cm−2, 141 μWh cm−2and 4466 μW cm−2, respectively. Furthermore, flexible supercapacitors were fabricated based on the composite textile electrodes and gel electrolytes. When being bent at different angles or suffering deformations such as bending for 100 cycles, the flexible supercapacitors preserve almost all the capacitance, which indicates the excellent flexibility of the composite textile electrode. This work provides various approaches to design composite textiles, and the prepared MnO2/CNT/ACFF composite textile may be a promising electrode material for high-performance flexible supercapacitors.
Wang, X, Zhao, SX, Dong, L, Lu, QL, Zhu, J & Nan, CW 2017, 'One-step synthesis of surface-enriched nickel cobalt sulfide nanoparticles on graphene for high-performance supercapacitors', Energy Storage Materials, vol. 6, pp. 180-187.View/Download from: UTS OPUS or Publisher's site
© 2016 Binary metal sulfide@graphene composites have held great promising as electrode materials for supercapacitors (SCs). However, synthesis of nanosized binary metal sulfides that uniformly distribute on graphene in a simple way is still an enormous challenge. Herein we report a one-step solvothermal method employing poly (acrylic acid) (PAA) additive to fabricate well-dispersed nickel-cobalt sulfide nanoparticles on graphene (marked as Ni-Co-S@G) used in both traditional and flexible supercapacitors. The Ni-Co-S@G traditional electrode exhibits high specific capacitance at high rate (1021 F g−1at 20 A g−1) and high capacitance retention (92.1% after 5000 cycles at 10 A g−1). Such outstanding performances are benefited from its unique integrated nanostructure which offers rich electroactive surface sites as well as favourable conductivity. Furthermore, asymmetric supercapacitor (ASC) of Ni-Co-S@G//reduced graphene hydrogels (RGH) delivers high energy density (39.5 Wh kg−1at power density of 1778 W kg−1) as well as excellent cycle stability (84.4% capacitance retention after 15,000 cycles). Besides, binder-free flexible electrode with satisfied electrochemical properties was successfully fabricated by directly growing Ni-Co-S@G on active carbon fibre cloth (ACC). This work provides a facile and effective way to optimize the capacitive performances of binary metal sulfide@graphene composites, and also promotes the progress of the supercapacitor technology.
Dong, L, Xu, C, Li, Y, Wu, C, Jiang, B, Yang, Q, Zhou, E, Kang, F & Yang, Q-H 2016, 'Simultaneous Production of High-Performance Flexible Textile Electrodes and Fiber Electrodes for Wearable Energy Storage', ADVANCED MATERIALS, vol. 28, no. 8, pp. 1675-1681.View/Download from: Publisher's site
Dong, L, Xu, C, Li, Y, Pan, Z, Liang, G, Zhou, E, Kang, F & Yang, Q-H 2016, 'Breathable and Wearable Energy Storage Based on Highly Flexible Paper Electrodes', ADVANCED MATERIALS, vol. 28, no. 42, pp. 9313-9319.View/Download from: Publisher's site
Dong, L, Xu, C, Li, Y, Huang, Z-H, Kang, F, Yang, Q-H & Zhao, X 2016, 'Flexible electrodes and supercapacitors for wearable energy storage: a review by category', JOURNAL OF MATERIALS CHEMISTRY A, vol. 4, no. 13, pp. 4659-4685.View/Download from: Publisher's site
Yang, Q, Dong, L, Xu, C & Kang, F 2016, 'High-performance supercapacitors based on graphene/MnO2/activated carbon fiber felt composite electrodes in different neutral electrolytes', RSC ADVANCES, vol. 6, no. 15, pp. 12525-12529.View/Download from: Publisher's site
Li, Y, Dong, L, Zhang, X, Lu, Y, Fang, W & Yang, Y 2015, 'Preparation of carbon nanotubes/epoxy composites using novel aerogel substrates', MATERIALS LETTERS, vol. 160, pp. 432-435.View/Download from: Publisher's site
Dong, L, Yang, Q, Xu, C, Li, Y, Yang, D, Hou, F, Yin, H & Kang, F 2015, 'Facile preparation of carbon nanotube aerogels with controlled hierarchical microstructures and versatile performance', CARBON, vol. 90, pp. 164-171.View/Download from: Publisher's site
Dong, L, Xu, C, Yang, Q, Fang, J, Li, Y & Kang, F 2015, 'High-performance compressible supercapacitors based on functionally synergic multiscale carbon composite textiles', JOURNAL OF MATERIALS CHEMISTRY A, vol. 3, no. 8, pp. 4729-4737.View/Download from: Publisher's site
Fang, J, Dong, L, Dong, W, Chiang, SW, Makimattila, S, Du, H, Li, J & Kang, F 2015, 'Freeze-drying method prepared UHMWPE/CNTs composites with optimized micromorphologies and improved tribological performance', JOURNAL OF APPLIED POLYMER SCIENCE, vol. 132, no. 18.View/Download from: Publisher's site
Dong, L, Li, Y, Wang, L, Xu, S & Hou, F 2014, 'Effect of frozen conditions on dispersion morphologies of carbon nanotubes and electrical conductivity of carbon fiber/epoxy composites', MATERIALS LETTERS, vol. 130, pp. 180-183.View/Download from: Publisher's site
Dong, L, Li, Y, Wang, L, Wan, Z, Hou, F & Liu, J 2014, 'Combination effect of physical drying with chemical characteristic of carbon nanotubes on through-thickness properties of carbon fiber/epoxy composites', JOURNAL OF MATERIALS SCIENCE, vol. 49, no. 14, pp. 4979-4988.View/Download from: Publisher's site
Dong, L, Hou, F, Li, Y, Wang, L, Gao, H & Tang, Y 2014, 'Preparation of continuous carbon nanotube networks in carbon fiber/epoxy composite', COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, vol. 56, pp. 248-255.View/Download from: Publisher's site
Dong, L, Li, Y, Wang, L, Hou, F & Liu, J 2014, 'Spatial dispersion state of carbon nanotubes in a freeze-drying method prepared carbon fiber based preform and its effect on electrical conductivity of carbon fiber/epoxy composite', MATERIALS LETTERS, vol. 130, pp. 292-295.View/Download from: Publisher's site