High-capacity dilithium hydroquinone cathode material for lithium-ion batteries

扫码查看

原文链接

NETL
NSTL
万方数据

外文摘要：Lithiated organic cathode materials show great promise for practical applications in lithium-ion batteries owing to their Li-reservoir characteristics.However,the reported lithiated organic cathode materials still suffer from strict synthesis conditions and low capacity.Here we report a thermal intermolecular rearrangement method without organic solvents to prepare dilithium hydroquinone(Li2Q),which delivers a high capacity of 323 mAh g-1 with an average discharge voltage of 2.8 V.The reversible conversion between orthorhombic Li2Qand monoclinic benzoquinone during charge/discharge processes is revealed by in situ X-ray diffraction.Theoretical calculations show that the unique Li-O channels in Li2Qare beneficial for Li+ion diffusion.In situ ultraviolet-visible spectra demonstrate that the dissolution issue of Li2Qelectrodes during charge/discharge processes can be handled by separator modification,resulting in enhanced cycling stability.This work sheds light on the synthesis and battery application of high-capacity lithiated organic cathode materials.

外文关键词：

lithium-ion batteriescathode materialslithiated organic materialsdilithium hydroquinoneseparator modification

作者：

Yong Lu、Haoqin Han、Zhuo Yang、Youxuan Ni、Zhicheng Meng、Qiu Zhang、Hao Wu、Weiwei Xie、Zhenhua Yan、Jun Chen

展开 >

作者单位：

Frontiers Science Center for New Organic Matter,Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education),State Key Laboratory of Advanced Chemical Power Sources,College of Chemistry,Nankai University,Tianjin 300071,China

基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Key R&D Program of ChinaFrontiers Science Center for New Organic Matter of Nankai UniversityYoung Elite Scientists Sponsorship Program by China Association for Science and Technology

项目编号：

2210907522121005220201020022022YFB2402200631812062023QNRC001

出版年：

2024

DOI：

10.1093/nsr/nwae146

国家科学评论(英文版)

CSTPCD

ISSN：

年,卷(期)：2024.11(6)