氮掺杂碳包覆Na3V2PO42F3 钠离子电池正极材料的制备与性能
赵易飞, 杨振东, 李凤, 谢召军, 周震

Nitrogen-doped carbon-coated Na3V2PO42F3 cathode materials for sodium-ion batteriesPreparation and electrochemical performance
ZHAO Yifei, YANG Zhendong, LI Feng, XIE Zhaojun, ZHOU Zhen
图4 NVPF@C-N组装的钠离子半电池的电化学性能。(a) 扫速为0.1 mV/sCV曲线;(b) NVPF, NVPF@CNVPF@C-N1 C倍率下的首周充放电曲线;(c) NVPF, NVPF@CNVPF@C-N1 C90 C倍率下的放电比容量图;(d) 与其他NVPF正极材料电化学性能比较
Fig. 4 Electrochemical performance of NVPF@C-N cathode in sodium-ion half-cell. (a) The first four CV curves at a scan rate of 0.1 mV/s between 2.3 V and 4.5 V; (b) The first charge/discharge profiles of NVPF, NVPF@C and NVPF@C-N at 1 C; (c) The rate capacity from 1 C to 90 C of NVPF, NVPF@C and NVPF@C-N; (d) The comparison of rate performance for NVPF cathodes