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In situ self-assembly assisted synthesis of N-doped mesoporous hierarchical carbon aerogels-wrapped Li_(2)ZnTi_(3)O_(8) composite for highrate lithium ion batteries

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Journal of Materiomics 2021年第5期7卷 1083-1093页

作者： Jingjing Wang Wenhan Zhang Jiawei Li Bin Wang Chao Xu Chunyan Lai Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power Shanghai University of Electric Power Shanghai200090China

Reinforcing electronic and ionic conductivity is very important to realize the high-rate Li_(2)ZnTi_(3)O_(8)(LZTO)anode for Lithium-ion batteries(LIBs).Here,we reported a synthetic strategy toward in situ growth of homodispersed Li_(2)ZnTi_(3)O_(8)on ultralight 3D carbon aerogels(CAs)via facile heat treatment and activation process taking LiOH as activating *** an optimized composite obtains a specific surface area of 154.427 m^(2) g^(-1) and a high pore *** strong interaction between the LZTO and N-doped CAs,a highly electrical conductivity and multidimensional ion transport channels of the hybrid result in a high capacity,outstanding high-rate performance and long cycle *** a result,the NPC-LZTO electrode(NPC-LZTO-B)delivers a commendable reversible capacity at high-rate(e.g.162.4 mAh g^(-1) at 5 A g^(-1)(22 C)and 127.3 mAh g^(-1) at 10 A g^(-1))and durable long-term performance(capacity retention of 73% after 4500 cycles at 5 A g^(-1)).Moreover,the kinetic analysis confirms that the feature of pseudocapacitance boosts lithium-ion storage performance at high *** carbon aerogels frame constructed LZTO nanocomposite electrodes provide a facile way to design high durable LIBs anode.

关键词： Li_(2)ZnTi_(3)O_(8)anode N-doped porous carbon Chitosan Lithium-ion batteries

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Recent advances and future perspectives for aqueous zinc-ion capacitors

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Materials Futures 2022年第2期1卷 38-50页

作者： Zhaodong Huang Rong Zhang Shaoce Zhang Pei Li Chuan Li Chunyi Zhi Department of Materials Science and Engineering City University of Hong Kong83 Tat Chee AvenueKowloonHong Kong 999077People’s Republic of China

Ion-hybrid capacitors are expected to combine the high specific energy of battery-type materials and the superior specific power of capacitor-type materials and are considered as a promising energy storage *** particular,aqueous zinc-ion capacitors(ZIC),possessing the merits of high safety,cost-efficiency and eco-friendliness,have been widely explored with various electrode materials and electrolytes to obtain excellent electrochemical *** this review,we first summarize the research progress on enhancing the specific capacitance of capacitor-type materials and review the research on improving the cycling capability of battery-type materials under high current ***,we look back on the effects of electrolyte engineering on the electrochemical performance of ***,we propose research challenges and development directions for *** review provides guidance for the design and construction of high-performance ZIC.

关键词： zinc ion capacitor supercapacitor zinc ion battery electrochemical capacitor porous carbon

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