Construction of MnO2–Mn3O4 heterostructures to facilitate high-performance aqueous magnesium ion energy storage

Xueli Chen; Lu Han; Guangzhen Zhao; Litao Zhao; Guoliang Gao; Lianghao Yu; Yanjiang Li; Xiuyang Shan; Junfeng Li; Xinjuan Liu; Guang Zhu

doi:10.1039/D3CC06199J

Construction of MnO₂–Mn₃O₄ heterostructures to facilitate high-performance aqueous magnesium ion energy storage†

Xueli Chen,^ab Lu Han,

*^a Guangzhen Zhao,

^a Litao Zhao,^a Guoliang Gao,^a Lianghao Yu,^a Yanjiang Li,^a Xiuyang Shan,^a Junfeng Li,^c Xinjuan Liu^d and Guang Zhu

*^ab

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* Corresponding authors

^a Key Laboratory of Spin Electron and Nanomaterials of Anhui Higher Education Institutes, Suzhou University, Suzhou 234000, PR China
E-mail: 982563331@qq.com, guangzhu@ahszu.edu.cn

^b School of Materials Science and Engineering, Anhui Polytechnic University, Wuhu 241000, PR China

^c College of Logistics Engineering, Shanghai Maritime University, Shanghai 201306, PR China

^d School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China

Abstract

MnO₂–Mn₃O₄ heterostructure materials are applied in aqueous magnesium ion energy storage for the first time. The heterostructure yields an exceptionally high pseudocapacitance contribution, resulting in a specific capacitance of 313.5 F g⁻¹ at 1 A g⁻¹, which contrasts with that of MnO₂ (108.8 F g⁻¹) and Mn₃O₄ (123.5 F g⁻¹). Additionally, it shows potential for practical applications as a cathode for magnesium ion hybrid supercapacitors (MHS).

Chemical Communications

Construction of MnO₂–Mn₃O₄ heterostructures to facilitate high-performance aqueous magnesium ion energy storage†

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Construction of MnO₂–Mn₃O₄ heterostructures to facilitate high-performance aqueous magnesium ion energy storage

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