Tuning the number of redox groups in the cathode toward high rate and long lifespan zinc-ion batteries

文献信息

发布日期 2023-12-05

DOI 10.1039/D3CC05493D

影响因子 6.222

作者

Yanjun Shi, Zhihui Xu, Pengcheng Wang, Haiguang Gao, Wanjiao He, Yanan Sun, Yucheng Huang, Juan Xu, Jianyu Cao

查看原文

摘要

We synthesized a small molecule, DBPTO, and used it as a cathode material in aqueous zinc-ion batteries. DBPTO presented a high reversible capacity of 382 mA h g−1 at 0.05 A g−1 and a long lifespan of over 60 000 cycles. In the same π-conjugated skeleton, DBPTO (containing four CO and two CN groups) shows a narrower energy gap than TAPQ (containing CO and four CN groups), which leads to the superior rate and cycling performance of DBPTO. The mechanism of charge storage of DBPTO also revealed that H+ and Zn2+ coordinated with the CO and CN sites by ex situ structural characterization and DFT calculations. Our results provide new insights into the design of organic cathodes with a high rate capability and long lifespan. Further efforts will focus on a deeper understanding of the charge storage mechanism.

期刊推荐

Journal of Chemical Sciences

Atomization and Sprays

Cellulose

Herald of the Russian Academy of Sciences

Biocatalysis and Biotransformation

Journal of the Indian Institute of Science

Heteroatom Chemistry

Chinese Journal of Chemistry

Main Group Chemistry

Topics in Catalysis

来源期刊

Chemical Communications

CiteScore: 8.6

自引率: 4.7%

年发文量: 2458

ChemComm publishes urgent research which is of outstanding significance and interest to experts in the field, while also appealing to the journal’s broad chemistry readership. Our communication format is ideally suited to short, urgent studies that are of such importance that they require accelerated publication. Our scope covers all topics in chemistry, and research at the interface of chemistry and other disciplines (such as materials science, nanoscience, physics, engineering and biology) where there is a significant novelty in the chemistry aspects. Major topic areas covered include: Analytical Chemistry Catalysis Chemical Biology and medicinal chemistry Computational Chemistry and Machine Learning Energy and sustainable chemistry Environmental Chemistry Green Chemistry Inorganic Chemistry Materials Chemistry Nanoscience Organic Chemistry Physical Chemistry Polymer Chemistry Supramolecular Chemistry