Junmin Ge

Zhengzhou University

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Bingan Lu

Hunan University

Ling Fan

Hunan University

Qingfeng Zhang

Xiangtan University

Jue Wang

Central South University

Xinzhi Yu

Hunan University

Zhaomeng Liu

Northeastern University

Longlu Wang

Nanjing University of Posts and Telecommunications

Hongguan Yang

Hunan University

Xianlu Lu

Hunan University

Jianguo Zhao

Dongbei University of Finance and Economics

Cooperative Institutions

Hunan University

Changsha University

Central South University

Chinese Academy of Sciences

University of Science and Technology of China

State Key Laboratory of Chemobiosensing and Chemometrics

Northeastern University

Institute of Coal Chemistry

University of Science and Technology Beijing

Tongji University

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Surface-substituted Prussian blue analogue cathode for sustainable potassium-ion batteries

Nature Sustainability (2021)

Junmin Ge Ling Fan Apparao M. Rao Jiang Zhou Bingan Lu

Prussian blue

Potassium-ion battery

10.1038/s41893-021-00810-7

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Citations (396)

An all-organic aqueous potassium dual-ion battery

Journal of Energy Chemistry (2020)

Junmin Ge Xianhui Yi Ling Fan Bingan Lu

10.1016/j.jechem.2020.08.049

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Citations (70)

Phosphate-based gel polymer electrolyte enabling remarkably long cycling stable sodium storage in a wide-operating-temperature

Chemical Engineering Journal (2023)

Jinyun Zheng Jiawei Zhang Wenjie Li Junmin Ge Weihua Chen

Atmospheric temperature range

10.1016/j.cej.2023.142796

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Citations (15)

High performance bimetal sulfides for lithium-sulfur batteries

Chemical Engineering Journal (2018)

Xianlu Lu Qingfeng Zhang Jue Wang Suhua Chen Junmin Ge

Bimetal

Lithium–sulfur battery

Carbon fibers

Current collector

10.1016/j.cej.2018.10.104

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Citations (107)

MoSe₂/N‐Doped Carbon as Anodes for Potassium‐Ion Batteries

Advanced Energy Materials (2018)

Junmin Ge Ling Fan Jue Wang Qingfeng Zhang Zhaomeng Liu

Abstract Potassium‐ion batteries (PIBs) have attracted considerable attention due to the low redox potential, low price, and abundance, in comparison to lithium and sodium. Herein, a novel potassium MoSe 2 /N‐C battery with a new electrolyte, 1 m potassium bis(fluoro‐slufonyl)imide in ethyl methyl carbonate, is reported. The MoSe 2 /N‐C composite, which consists of carbon‐coated MoSe 2 nanosheets, is synthesized through solvothermal and annealing method. As an anode material for PIBs, it exhibits an outstanding rate performance and long cycling stability. Meanwhile, a reversible capacity of 258.02 mA h g −1 is achieved after 300 cycles at 100 mA g −1 , obtaining a Coulombic efficiency close to 100%. Even at a high current density, it can maintain 218 and 197 mA h g −1 at 500 and 1000 mA g −1 , respectively. The charge/discharge mechanism of MoSe 2 /N‐C as the anode material for PIBs is investigated. These results reveal that the insertion and the extraction of K + will lead to a phase transition of MoSe 2 . During the charge process, a part of the MoSe 2 will transform to Mo 15 Se 19 and the major final discharge product is K 5 Se 3 .

Carbon fibers

10.1002/aenm.201801477

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Citations (430)

Nature of FeSe₂/N‐C Anode for High Performance Potassium Ion Hybrid Capacitor

Advanced Energy Materials (2019)

Junmin Ge Bin Wang Jue Wang Qingfeng Zhang Bingan Lu

Abstract Potassium ion hybrid capacitors have great potential for large‐scale energy devices, because of the high power density and low cost. However, their practical applications are hindered by their low energy density, as well as electrolyte decomposition and collector corrosion at high potential in potassium bis(fluoro‐sulfonyl)imide‐based electrolyte. Therefore, anode materials with high capacity, a suitable voltage platform, and stability become a key factor. Here, N‐doping carbon‐coated FeSe 2 clusters are demonstrated as the anode material for a hybrid capacitor, delivering a reversible capacity of 295 mAh g −1 at 100 mA g −1 over 100 cycles and a high rate capability of 158 mAh g −1 at 2000 mA g −1 over 2000 cycles. Meanwhile, through density functional theory calculations, in situ X‐ray diffraction, and ex situ transmission electron microscopy, the evolution of FeSe 2 to Fe 3 Se 4 for the electrochemical reaction mechanism is successfully revealed. The battery‐supercapacitor hybrid using commercial activated carbon as the cathode and FeSe 2 /N‐C as the anode is obtained. It delivers a high energy density of 230 Wh kg −1 and a power density of 920 W kg −1 (the energy density and power density are calculated based on the total mass of active materials in the anode and cathode).

Power density

10.1002/aenm.201903277

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Citations (250)

Ultrathin Honeycomb-like Carbon as Sulfur Host Cathode for High Performance Lithium–Sulfur Batteries

ACS Applied Energy Materials (2018)

Taohong Wang Yuhua Yang Ling Fan Longlu Wang Ruifang Ma

Lithium–sulfur (Li–S) batteries have attracted great interest because of its high theoretical capacity (1675 mA h g–1). However, the low electrical conductivity of sulfur, dissolution of polysulfides, and structural collapse of electrode limit its practical application. Here an ultrathin honeycomb-like porous carbon derived from loofah sponge and doped with nitrogen (PCLSN) is prepared as a stable host for sulfur nanoparticles. Attributed to the integrated honeycomb structure, hierarchical porosity, ultrathin honeycomb walls, and synergistic effects between physical and chemical adsorption of polysulfides, the developed PCLSN@S cathode achieves a high initial specific capacity of 1379 mA h g–1 at 0.1 C, outstanding cyclability with a small capacity decay rate of 0.044% per cycle over 970 cycles at 2 C, excellent rate performance with a high capacity of 664 mA h g–1 at 3 C, and high sulfur content of PCLSN@S up to 76.1%. Our approach provides a promising route to design other 3D porous structures for high performance Li–S batteries.

Honeycomb

Carbon fibers

10.1021/acsaem.8b01498

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Citations (17)