Structural change and charge compensation mechanism for Li1+x(Fe0.1Ni0.1Mn0.8)1-xO2 (0 < x <1/3) positive electrode material during electrochemical activation

Mitsuharu Tabuchi,Yoshikazu Sasaki,Hideka Shibuya, Kyousuke Doumae,Misaki Katayama,Keisuke Yamanaka,Yasuhiro Inada,Ryota Yuge,Kei Kubota

Materials Research Bulletin（2022）

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摘要

•Two 10% Fe- and Ni-substituted Li2MnO3 samples were prepared for characterization.•Sample calcined in N2 atmosphere had better electrochemical performance.•Calcination in N2 atmosphere suppress cubic spinel formation on charging.•Both samples utilize trivalent Fe ion as a redox center.•Oxide ion acts as a redox center but it has poor reversibility.

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关键词

Oxides,Chemical synthesis,Electron diffraction,Mössbauer spectroscopy,Energy storage

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