科研之友
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摘要
Mg-substituted Na3Ni2-xMgxSbO6 cathode materials are synthesized via a scalable high-temperature solid-state method to improve the cyclability of the honey-comb-layered oxide cathode in sodiumion batteries. The partial substitution of Ni2+ by Mg2+ in the transition-metal layer suppresses the electrochemically unfavorable P3-O1 transition and enlarges the lattice parameters to bring improved performance with respect to capacity retention, Coulombic efficiency, and Na (de) intercalation kinetics.
- 出版日期2017-3-8
