Journal ArticleDOI
High Areal Capacity and Lithium Utilization in Anodes Made of Covalently Connected Graphite Microtubes
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TLDR
It is suggested that an optimized microstructure with moderate electrode/electrolyte interface area is critical to accommodate volume change and inhibit the risks of irreversible Li consumption by side reactions and Li dendrite growth for high-performance Li-metal anodes.Abstract:
Lithium metal is an attractive anode material for rechargeable batteries because of its high theoretical specific capacity of 3860 mA h g-1 and the lowest negative electrochemical potential of -3.040 V versus standard hydrogen electrode. Despite extensive research efforts on tackling the safety concern raised by Li dendrites, inhibited Li dendrite growth is accompanied with decreased areal capacity and Li utilization, which are still lower than expectation for practical use. A scaffold made of covalently connected graphite microtubes is reported, which provides a firm and conductive framework with moderate specific surface area to accommodate Li metal for anodes of Li batteries. The anode presents an areal capacity of 10 mA h cm-2 (practical gravimetric capacity of 913 mA h g-1 ) at a current density of 10 mA cm-2 , with Li utilization of 91%, Coulombic efficiencies of ≈97%, and long lifespan of up to 3000 h. The analysis of structure evolution during charge/discharge shows inhibited lithium dendrite growth and a reversible electrode volume change of ≈9%. It is suggested that an optimized microstructure with moderate electrode/electrolyte interface area is critical to accommodate volume change and inhibit the risks of irreversible Li consumption by side reactions and Li dendrite growth for high-performance Li-metal anodes.read more
Citations
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3D Flexible, Conductive, and Recyclable Ti3C2Tx MXene-Melamine Foam for High-Areal-Capacity and Long-Lifetime Alkali-Metal Anode.
Haodong Shi,Haodong Shi,Meng Yue,Meng Yue,Chuanfang John Zhang,Yanfeng Dong,Pengfei Lu,Shuanghao Zheng,Huijuan Huang,Jie Chen,Jie Chen,Pengchao Wen,Zhaochao Xu,Qiong Zheng,Xianfeng Li,Yan Yu,Zhong-Shuai Wu +16 more
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Revealing Principles for Design of Lean-Electrolyte Lithium Metal Anode via In Situ Spectroscopy.
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References
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Journal ArticleDOI
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Electrical Energy Storage for the Grid: A Battery of Choices
TL;DR: The battery systems reviewed here include sodium-sulfur batteries that are commercially available for grid applications, redox-flow batteries that offer low cost, and lithium-ion batteries whose development for commercial electronics and electric vehicles is being applied to grid storage.
Journal ArticleDOI
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Peter G. Bruce,Stefan Freunberger,Laurence J. Hardwick,Laurence J. Hardwick,Jean-Marie Tarascon +4 more
TL;DR: The energy that can be stored in Li-air and Li-S cells is compared with Li-ion; the operation of the cells is discussed, as are the significant hurdles that will have to be overcome if such batteries are to succeed.
Journal ArticleDOI
Lithium metal anodes for rechargeable batteries
Wu Xu,Jiulin Wang,Jiulin Wang,Fei Ding,Xilin Chen,Eduard Nasybulin,Yaohui Zhang,Yaohui Zhang,Ji-Guang Zhang +8 more
TL;DR: In this article, various factors that affect the morphology and Coulombic efficiency of Li metal anodes have been analyzed, and the results obtained by modelling of Li dendrite growth have also been reviewed.