材料科学
阴极
铋
氮气
钠
阳极
离子
钠离子电池
电池(电)
碳纤维
电导率
兴奋剂
化学工程
电极
光电子学
化学
复合材料
冶金
工程类
复合数
法拉第效率
有机化学
量子力学
功率(物理)
物理化学
物理
作者
Hao Ma,Tianyi Wang,Jiabao Li,Jian Yang,Zhigang Liu,Na Wang,Dawei Su,Chengyin Wang
标识
DOI:10.1002/asia.202100519
摘要
Abstract As two‐dimensional (2D) materials, bismuth (Bi) has large interlayer spacing along c‐axis (0.395 nm) which provides rich active sites for sodium ions, thus guaranteeing high sodium ion storage activity. However, its poor electrical conductivity, combined with its degraded cycling performance, restricts its practical application. Herein, Bi microsphere coated with nitrogen‐doped carbon (Bi@NC) was synthesized. Owing to the unique Bi crystals and nitrogen‐doped carbon layer, the obtained Bi@NC anode exhibited satisfactory cycling stability and superior rate capability. Moreover, after assembling Bi@NC anode with Na 3 V 2 (PO 4 ) 3 @C cathode to full battery, excellent sodium storage performance was obtained (57 mA h g −1 after 2000 cycles at 1.0 A g −1 ).
科研通智能强力驱动
Strongly Powered by AbleSci AI