Copper-substituted Na<sub>0.67</sub>Ni<sub>0.3−x</sub>Cu<sub>x</sub>Mn<sub>0.7</sub>O<sub>2</sub> cathode materials for sodium-ion batteries with suppressed P2–O2 phase transition
Lei Wang(Hunan University), Yonggang Sun(Chinese Academy of Sciences), Linlin Hu(Chinese Academy of Sciences), Jun-Yu Piao(Chinese Academy of Sciences), Jing Guo(Hunan University), Arumugam Manthiram(Division of Materials Science and Engineering), Jianmin Ma(Hunan University), An-Min Cao(Chinese Academy of Sciences)
Cited by 343
Abstract
<italic>In situ</italic> XRD resolves the structural evolution of the Na–Cu/Ni/Mn–O system during the Na intercalation/deintercalation processes. The introduction of Cu<sup>2+</sup> into the transition metal lattice is an strategy to prevent P2–O2 phase transitions.
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