Kinetics Manipulation for Improved Solid Electrolyte Interphase and Reversible Na Storage

Xiaohan Tang; Fei Xie; Yaxiang Lu; Huican Mao; Zhao Chen; Hongyi Pan; Suting Weng; Yang Yang; Xiangfei Li; Zhenyu Guo; Qiubo Guo; Feixiang Ding; Xueyan Hou; Yuqi Li; Xuefeng Wang; Maria-Magdalena Titirici; Liquan Chen; Yuanjiang Pan; Yong-Sheng Hu

doi:10.1021/acsenergylett.4c00041

journal article·2024-03-08

Kinetics Manipulation for Improved Solid Electrolyte Interphase and Reversible Na Storage

Xiaohan Tang, Fei Xie, Yaxiang Lu, Huican Mao, Zhao Chen, Hongyi Pan, Suting Weng, Yang Yang, Xiangfei Li, Zhenyu Guo, Qiubo Guo, Feixiang Ding, Xueyan Hou, Yuqi Li, Xuefeng Wang, Maria-Magdalena Titirici, Liquan Chen, Yuanjiang Pan, Yong-Sheng Hu

ACS Energy Letters· Volume 9· Issue 3

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Source abstract

Abstract

Minimizing the irreversibility during the first cycle in carbon anodes is crucial to the energy density and lifespan of Na-ion batteries (NIBs). However, the underlying mechanism of the irreversible capacity, especially combined with the kinetics and interface, is still incompletely understood. Herein, we discovered that poor kinetics and strong polarization will drive the Na + residual at the interface as pseudo-dead Na to trigger electrolyte decomposition and form extra SEI, thus sacrificing the initial Coulombic efficiency (ICE). Manipulating defect concentration is, therefore, developed to improve the kinetics, reduce the diffusion barrier of Na +, and lower the Fermi energy of the anode to impede the pseudo-dead Na and extra SEI formation, thereby ensuring high ICE and even capacity. This study proposes a complementary view on the understanding of initial irreversibility and interface evolution influenced by Na + kinetics, which provides guidance for defect chemistry and engineering for future design of carbon anodes toward high-performance NIBs.

Source: openalex_inverted_index · Quality: baseline

Research context

Energy storage

OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Advanced Battery Technologies Research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials and Devices, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

Department of Chemistry, Zhejiang University, Hangzhou 310027, China

Huairou Division, Institute of Physics, Chinese Academy of Sciences, Beijing 101400, China

Yangtze River Delta Physics Research Center Co. Ltd, Liyang 213300, China

College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China

Department of Chemical Engineering, Imperial College London, London SW7 2AZ, U.K.

Funding

National Key Research and Development Program of China · Youth Innovation Promotion Association of the Chinese Academy of Sciences · National Natural Science Foundation of China · One Hundred Talent Project of Institute of Physics,CAS

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