High-Resolution Mass Spectroscopy for Revealing the Charge Storage Mechanism in Batteries:Oxamide Materials as an Example

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外文摘要：The pursuit of high-performance electrode materials is highly desired to meet the demand of batteries with high energy and power density.However,a deep understanding of the charge storage mechanism is always challenging,which limits the development of advanced electrode materials.Herein,high-resolution mass spectroscopy(HR-MS)is employed to detect the evolution of organic electrode materials during the redox process and reveal the charge storage mechanism,by using small molecular oxamides as an example,which have ortho-carbonyls and are therefore potential electrochemical active materials for batteries.The HR-MS results adequately proved that the oxamides could reversibly store lithium ions in the voltage window of 1.5-3.8 V.Upon deeper reduction,the oxamides would decompose due to the cleavage of the C-N bonds in oxamide structures,which could be proved by the fragments detected by HR-MS,1H NMR,and the generation of NH3 after the reduction of oxamide by Li.This work provides a strategy to deeply understand the charge storage mechanism of organic electrode materials and will stimulate the further development of characterization techniques to reveal the charge storage mechanism for developing high-performance electrode materials.

外文关键词：

charge storage mechanismhigh-resolution mass spectroscopyorganic batteriesorganic electrodesoxamides

作者：

Chenyang Zhang、Yuan Chen、Kun Fan、Guoqun Zhang、Jincheng Zou、Huichao Dai、Yanbo Gao、Xiaobo Wang、Minglei Mao、Chengliang Wang

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作者单位：

School of Optical and Electronic Information,Wuhan National Laboratory for Optoelectronics(WNLO),Optics Valley Laboratory,Huazhong University of Science and Technology,Wuhan 430074,China

Wenzhou Advanced Manufacturing Technology Research Institute,Huazhong University of Science and Technology,Wenzhou 325035,China

基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational 1000-Talents ProgramInnovation Fund of WNLOOpen Fund of the State Key Laboratory of Integrated OptoelectronicsWenzhou Science & Technology BureauWenzhou Science & Technology BureauWenzhou Science & Technology BureauChina Postdoctoral Science FoundationChina Postdoctoral Science FoundationChina Postdoctoral Science Foundation

项目编号：

521731632227903822205069IOSKL2020KF02ZG2022020G20220022G202200262021TQ01152021 M7013022020 M672323

出版年：

2023

DOI：

10.1002/eem2.12557

能源与环境材料(英文)

CSCD

ISSN：

年,卷(期)：2023.6(4)

参考文献量51