新型锂离子电池含氮杂环负载钴电极材料的制备及电化学性能

曲靖师范学院学报 ›› 2020, Vol. 39 ›› Issue (6): 9-14.

新型锂离子电池含氮杂环负载钴电极材料的制备及电化学性能

郑佳雨¹, 杨润芳¹, 尧世文², 蔡雨晴¹, 舒波², 夏书标¹

1.曲靖师范学院化学与环境科学学院,云南曲靖 655011;
2.云南铜业股份有限公司西南铜业分公司,云南昆明 650000

收稿日期:2020-10-11 出版日期:2020-11-26 发布日期:2021-01-13
通讯作者: 夏书标,曲靖师范学院化学与环境科学学院副教授,主要从事锂离子电池电极材料及固体电解质研究.
作者简介:郑佳雨,曲靖师范学院化学与环境科学学院在读本科生,主要从事锂离子电池电极材料制备研究.
基金资助:
国家自然科学地区基金“基于NCA正极MO(M=Ce, Si…)@Li2S-GeS2-P2S5 固体电解质界面构筑及界面性能研究”(5176048);云南地方本科高校基础研究联合专项重点项目 “锂离子电池杂化电极材料的储锂机理与电化学性能研究”(2018FH001-007).

Preparation and Electrochemical Performance of a New Type of Nitrogen-Containing Heterocycle Loaded Cobalt Electrode Material for Lithium-Ion Battery

ZHENG Jiayu¹, YANG Runfang¹, YAO Shiwen², CAI Yuqing¹, SHU Bo², XIA Shubiao¹

1. School of Chemistry and Environmental Science, Qujing Normal University, Qujing Yunnan 655011;
2. Southwest Copper Branch of Yunnan Copper Co., Ltd., Kunming Yunnan 650000, P. R. China

Received:2020-10-11 Published:2020-11-26 Online:2021-01-13

摘要/Abstract

摘要： 锂离子电池作为新型绿色二次电池,具有工作电压高、能量密度大、自放电率低、无记忆效应等特点,已成为生活中不可缺少的储能技术.成功合成了一种类似MOF结构,具有双活性位点有机无机杂化材料HAT-Co, 并且首次将该材料用于锂离子电池负极材料. SEM形貌分析材料具有珊瑚形状.通过对比几种不同的合成条件, XRD衍射峰基本没有变化,结晶性良好.在电流密度为100mA/g的情况下,经过50次循环后可达到698mAh/g的大容量.在800mA/g的电流密度下循环500次后,仍能保持95%的容量保持率.HAT-Co电极材料优异的电化学性能主要得益于其独特的结构和双活动氧化还原活动位点.该材料的合成与应用对突破锂离子电池研究瓶颈,推动锂离子电池新电极体系的发展起到理论指导意义和实际应用价值.

关键词: 高镍层状氧化物, 锂离子电池, 离子掺杂, 表面包覆

Abstract: Lithium-ion batteries with the characteristics of high working voltage, high energy density, low self-discharge rate, and no memory effect, have become an indispensable energy storage technology in the future. A kind of organic-inorganic hybrid material HAT-Co, which is similar to MOF structure with dual active sites, has been successfully synthesized. The material is first used as an anode material for the lithium-ion batteries. The material has a coral shape when it is analyzed by the SEM topography. By comparing several different synthesis conditions, the XRD diffraction peaks are basically unchanged and the crystallinity is good. In the case of a current density of 100mA/g, a large capacity of 698mAh/g can be reached after 50 cycles. After 500 cycles at a current density of 800mA/g, the capacity retention rate of 95% can still be maintained. The excellent electrochemical performance of HAT-Co electrode material is mainly due to its unique structure and dual active redox active sites. The synthesis and application of this material have theoretical guiding significance for breaking through the bottleneck of lithium-ion battery research, and have practical application value for promoting the development of new electrode systems.

Key words: high nickel layered oxide, lithium-ion battery, ion doping, surface coating

中图分类号:

TQ11

郑佳雨, 杨润芳, 尧世文, 蔡雨晴, 舒波, 夏书标. 新型锂离子电池含氮杂环负载钴电极材料的制备及电化学性能[J]. 曲靖师范学院学报, 2020, 39(6): 9-14.

ZHENG Jiayu, YANG Runfang, YAO Shiwen, CAI Yuqing, SHU Bo, XIA Shubiao. Preparation and Electrochemical Performance of a New Type of Nitrogen-Containing Heterocycle Loaded Cobalt Electrode Material for Lithium-Ion Battery[J]. Journal of Qujing Normal University, 2020, 39(6): 9-14.

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