Reaction mechanism and electrochemical performance of manganese (II) oxide in zinc ion batteries

• Published in: Solid state ionics Vol. 356; p. 115439
• Main Authors: Zhang, Ruizhi, Ma, Qiuchen, Chen, Shan, Huang, Jingdong, Zhu, Lingze, Liu, Jun
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 15.11.2020; Elsevier BV
• Subjects: Batteries; Carbon Nanosheets; Conductivity; Cycles; Electrochemical analysis; Electrode materials; Electrodes; Flux density; Manganese oxides; MnO; Reaction mechanisms; Rechargeable batteries; Studies; Zinc-ions batteries; Carbon Nanosheets; Zinc-ions batteries; MnO
• ISSN: 0167-2738; 1872-7689
• DOI: 10.1016/j.ssi.2020.115439

Due to the abundant manganese reserves and the ability to provide higher voltages, the Mn3+ and Mn4+ cathode materials have been widely studied in zinc-ion batteries (ZIBs). However, there are some common disadvantages including poor conductivity and the expansion in volume during cycling, which exist in these Mn3+ and Mn4+ materials. Herein, we applied pure MnO as an electrode material to ZIBs and discussed the reaction mechanism. Specifically, the energy density could reach 431.5 mAh g−1 at 0.2 A g−1, which was the highest in the Mn-based materials. It also showed high capacity (187.8 mAh g−1) after 500 cycles at 1A g−1. And after 1200 cycles at 1.5 A g−1, the capacity retention rate was still at 87.3%, suggesting the great long-life cycling. This kind of MnO encapsulated by carbon can bring new opportunities for Mn-based ZIBs. •MnO nanoparticles was apply as electrode of ZIBs.•Analysis the electrochemical performance of MnO nanoparticles encapsulated by carbon nanosheet in ZIBs.•Explore the reaction mechanism of Mn (II) in ZIBs.