PVP插层与氧化石墨烯涂层协同优化锌/二氧化锰水溶液电池性能

IF 9.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Chinese Chemical Letters Pub Date : 2024-11-30 DOI:10.1016/j.cclet.2024.110701

Shilong Li , Ming Zhao , Yefei Xu , Zhanyi Liu , Mian Li , Qing Huang , Xiang Wu

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引用次数: 0

摘要

二氧化锰（MnO2）电极材料具有高能量密度、结构多样性和高修饰潜力等优点。这使得它成为锌离子水溶液电池的重要阴极之一。但其导电性差、层间距窄、易溶解等缺点限制了其应用。本文通过对聚乙烯吡咯烷酮（PVP）预插入层和氧化石墨烯（GO）自组装层进行共改性，制备了MnO2[email protected]复合材料。在0.2 a /g电流密度下，Zn//MnO2电池的放电比容量为442 mAh/g。它还保持100 %的容量，以1 A/g循环1000次。组装后的软包电池在不同弯曲条件下表现出优异的柔韧性和适应性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Performance optimization of aqueous Zn/MnO2 batteries through the synergistic effect of PVP intercalation and GO coating

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Performance optimization of aqueous Zn/MnO2 batteries through the synergistic effect of PVP intercalation and GO coating

Manganese dioxide (MnO₂) electrode material possesses the advantages of high energy density, structural diversity and high modification potential. This allows it become one of the important cathodes for aqueous zinc ion battery. However, the applications are limited by the poor electrical conductivity, narrow layer spacing and the ease of dissolution. Herein, we prepare MnO₂[email protected] composites by the co-modification of polyvinylpyrrolidone (PVP) pre-insertion layer and graphene oxide (GO) self-assembly layer. The Zn//MnO₂[email protected] cells deliver a discharge specific capacity of 442 mAh/g at a current density of 0.2 A/g. It also maintains 100 % capacity for 1000 times cycling at 1 A/g. The assembled soft package batteries demonstrate superior flexibility and adaptability under different bending conditions.

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来源期刊

Chinese Chemical Letters 化学-化学综合

CiteScore

14.10

自引率

15.40%

发文量

8969

审稿时长

1.6 months

期刊介绍： Chinese Chemical Letters (CCL) (ISSN 1001-8417) was founded in July 1990. The journal publishes preliminary accounts in the whole field of chemistry, including inorganic chemistry, organic chemistry, analytical chemistry, physical chemistry, polymer chemistry, applied chemistry, etc.Chinese Chemical Letters does not accept articles previously published or scheduled to be published. To verify originality, your article may be checked by the originality detection service CrossCheck.