A Cu/MnOx Composite with Copper‐Doping‐Induced Oxygen Vacancies as a Cathode for Aqueous Zinc‐Ion Batteries

Author:

Han Miao1,Jia Hongsheng1ORCID,Wang Yubo1,Li Siqi1,E Yuanlong1,Liu Yanqing1,Wang Qingshuang2,Liu Wanqiang34

Affiliation:

1. Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education Jilin Normal University Siping 136000 China

2. Research Center for Nanotechnology Changchun University of Science and Technology Changchun 130022 China

3. School of Materials Science and Engineering Changchun University of Science and Technology Changchun 130022 China

4. Chongqing Research Institute of Changchun University of Science and Technology Chongqing 400000 China

Abstract

AbstractAqueous zinc‐ion batteries are anticipated to be the next generation of important energy storage devices to replace lithium‐ion batteries due to the ongoing use of lithium resources and the safety hazards associated with organic electrolytes in lithium‐ion batteries. Manganese‐based compounds, including MnOx materials, have prominent places among the many zinc‐ion battery cathode materials. Additionally, Cu doping can cause the creation of an oxygen vacancy, which increases the material‘s internal electric field and enhances cycle stability. MnOx also has great cyclic stability and promotes ion transport. At a current density of 0.2 A g−1, the Cu/MnOx nanocomposite obtained a high specific capacitance of 304.4 mAh g−1. In addition, Cu/MnOx nanocomposites showed A high specific capacity of 198.9 mAh g−1 after 1000 cycles at a current density of 0.5 A g−1. Therefore, Cu/MnOx nanocomposites are expected to be a strong contender for the next generation of zinc‐ion battery cathode materials in high energy density storage systems.

Funder

Jilin Provincial Key Research and Development Plan Project

Publisher

Wiley

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