Recent Advances of Emerging 2D MXene for Stable and Dendrite‐Free Metal Anodes
Recent Advances of Emerging 2D MXene for Stable and Dendrite‐Free Metal Anodes
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DOI：
10.1002/adfm.202004613
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发表时间：
2020-09
影响因子：
19
通讯作者：
Chuanliang Wei;Yuan Tao;Y. An;Yuan Tian;Yuchan Zhang;Jinkui Feng;Yitai Qian
中科院分区：
文献类型：
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作者：
Chuanliang Wei;Yuan Tao;Y. An;Yuan Tian;Yuchan Zhang;Jinkui Feng;Yitai Qian
基于电镀/剥离电化学的金属阳极，例如金属Li、Na、K、Zn、Mg、Ca、Al和Fe，由于其高的理论比容量、低的电化学电势和上级电子传导性，在过去几年中引起了广泛的关注。金属阳极可以与阴极配对，以构建高能量密度的可充电金属电池。然而，固有的问题，包括大的体积变化，不可控制的危险的树枝状晶体的生长，和不稳定的固体电解质界面（SEI）阻碍了他们的进一步发展。MXene作为一种新兴的2D材料，由于其2D结构，丰富的表面官能团和构建宏观结构的能力，在解决金属阳极固有问题方面表现出巨大的潜力。到目前为止，在MXene的帮助下，已经提出了各种策略来实现稳定和无枝晶的金属阳极，例如基于MXene的主体设计，设计亲金属的MXene基衬底，用MXene修饰金属表面，构建MXene阵列，以及用MXene装饰隔板或电解质。本文对MXene在稳定和无枝晶金属阳极中的应用和进展进行了详细的总结和分析。最后对今后的研究方向进行了展望。
Metal anodes based on a plating/stripping electrochemistry such as metallic Li, Na, K, Zn, Mg, Ca, Al, and Fe have attracted widespread attention over the past several years because of their high theoretical specific capacity, low electrochemical potential, and superior electronic conductivity. Metal anodes can be paired with cathodes to construct high‐energy‐density rechargeable metal batteries. However, inherent issues including large volume changes, uncontrollable growth of dangerous dendrites, and an unstable solid electrolyte interphase (SEI) hinder their further development. MXene as an emerging 2D material has shown great potential to address the inherent issues of metal anodes due to its 2D structure, abundant surface functional groups, and the ability to construct macroscopic architectures. To date, under the assistance of MXene, various strategies have been proposed to achieve stable and dendrite‐free metal anodes, such as MXene‐based host design, designing metalphilic MXene‐based substrates, modifying the metal surface with MXene, constructing MXene arrays, and decorating separators or electrolytes with MXene. Herein the applications and advances of MXene in stable and dendrite‐free metal anodes are carefully summarized and analyzed. Some perspectives and outlooks for future research are also proposed.