A 10-pm Ultrathin Lithium Metal Composite Anodes with Superior Electrochemical Kinetics and Cycling Stability

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外文摘要：Lithium metal is a promising candidate for the promotion of the next generation high energy density batteries.The employment of ultrathin Li metal anode with controllable thickness could enable a higher efficiency of Li utilization.Herein,a simple method to fabricate free-standing 10 pm ultrathin Li metal anode is developed in this work.A three-dimensional MnOx-coated CNT framework is constructed through a facile hydrothermal process,utilizing as a host for molten Li infusion,which could not only put forward a simple strategy to modulate the thickness of Li metal film but also restricts the volume expansion.The abundant MnOx nanoparticles acting as lithiophilic sites reduce the Li nucleation barrier and optimize the electrochemical kinetics at the anode/electrolyte interface.As a result,the ultrathin Li composite anode exhibits a superior lifespan expanded to 2000 cycles in a symmetric cell,as well as a better capacity and rate capability than that of bare Li anode in full cell,fulfilling the requirements of high energy density and stable cycling life.Furthermore,a wave-shaped Li metal pouch cell based on the ultrathin Li composite anode is assembled that exhibits remarkable mechanical bending toleration and cyclic stability,demonstrating large potential application in the field of flexible wearable devices.

外文关键词：

3D hostfast kineticsflexible batterieslithiophilic sitesultrathin Li anode

作者：

Gefei Zhang、Kai Wang、Yanan Xu、Xudong Zhang、Qifan Peng、Yibo Ma、Shani Li、Xiong Zhang、Xianzhong Sun、Yanwei Ma

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作者单位：

Institute of Electrical Engineering,Chinese Academy of Sciences,Beijing 100190,China

School of Engineering Sciences,University of Chinese Academy of Sciences,Beijing 100049,China

Institute of Electrical Engineering and Advanced Electromagnetic Drive Technology,Qilu Zhongke,Jinan 250013,China

School of Materials Science and Engineering Zhengzhou University,Zhengzhou 450001,China

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基金：

Beijing Natural Science FoundationNational Science Foundation for Excellent Young Scholars of ChinaNational Natural Science Foundation of China(Youth Program)National Natural Science Foundation of China(Youth Program)DNL Cooperation Fund,CASDNL Cooperation Fund,CASYouth Innovation Promotion Association,CAS

项目编号：

JQ19012518227065210723452207250DNL201912DNL201915Y2021052

出版年：

2023

DOI：

10.1002/eem2.12598

能源与环境材料(英文)

CSCD

ISSN：

年,卷(期)：2023.6(4)

参考文献量53