GAO, Ang; ZHANG, Qinghua; LI, Xinyan; SHANG, Tongtong; TANG, Zhexin; LU, Xia; LUO, Yanhong; DING, Jiarun; HAY KAN, Wang; CHEN, Huaican; YIN, Wen; WANG, Xuefeng; XIAO, Dongdong; SU, Dong; LI, Hong; RONG, Xiaohui; YU, Xiqian; YU, Qian; MENG, Fanqi; NAN, Cewen; DELMAS, Claude; CHEN, Liquan; HU, Yong-Sheng; GU, Lin

doi:10.1038/s41893-021-00809-0

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GAO, Ang
Beijing National Laboratory for Condensed Matter Physics
School of Physical Sciences

ZHANG, Qinghua
Beijing National Laboratory for Condensed Matter Physics
Yangtze River Delta Physics Research Center Co. Ltd

LI, Xinyan
Beijing National Laboratory for Condensed Matter Physics
College of Materials Science and Optoelectronic Technology

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Nature Sustainability. 2022-03, vol. 5, n° 3, p. 214-224

Springer Nature

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Manganese could be the element of choice for cathode materials used in large-scale energy storage systems owning to its abundance and low toxicity levels. However, both lithium and sodium ion batteries adopting this electrode chemistry suffer from rapid performance fading, suggesting a major technical barrier that must be overcome. Here we report a P3-type layered manganese oxide cathode Na 0.6 Li 0.2 Mn 0.8 O 2 (NLMO) that delivers a high capacity of 240 mAh g −1 with outstanding cycling stability in a lithium half-cell. Combined experimental and theoretical characterizations reveal a characteristic topological feature that enables the good electrochemical performance. Specifically, the-α-γ-layer stacking provides topological protection for lattice oxygen redox, whereas the reversibility is absent in P2-structured NLMO which takes a-α-β-configuration. The identified new order parameter opens an avenue towards the rational design of reversible Mn-rich cathode materials for sustainable batteries.< Réduire

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Topologically protected oxygen redox in a layered manganese oxide cathode for sustainable batteries

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