材料科学
阳极
石墨烯
离子
锂(药物)
球磨机
钠
电池(电)
钠离子电池
化学工程
锂离子电池的纳米结构
锂离子电池
纳米技术
复合材料
电极
冶金
有机化学
物理化学
法拉第效率
医学
功率(物理)
化学
物理
量子力学
内分泌学
工程类
作者
Jiakui Zhang,Yu Lei,Lingyun Zhou,Xianghong Chen,Shuhan Huang,Liang Liu,Huan Liu,Shi Xue Dou,Jiantie Xu
标识
DOI:10.1002/adfm.202314160
摘要
Abstract The exploration of waste graphite from used lithium ion batteries (LIBs) and its derivatives for versatile applications is an efficient route to promote the environmental and eco‐friendly recycling of used LIBs. Sodium ion batteries (SIBs) are alternative candidates to LIBs mainly due to similar electrochemical mechanism of SIBs to LIBs and rich natural resource of Na. Herein, a holey waste graphite (hG w ) with well‐defined porous structure is produced by the annealing of lithiated waste graphite (Li/G w ) from used LIBs under a flow gas of H 2 O and subsequent lithium leaching in DI water. Benefiting from the holey structure of hG w , holey graphene nanoplatelets (hGn w ) with ultrahigh‐level edge‐grafted oxygen groups (≈37.8 at%) are synthesized by mechanical balling of hG w . As anode for SIBs, the hGn w present outstanding sodium ion storage properties with high initial Coulombic efficiency of 82.4%, high reversible capacity (e.g., 416.1 mAh g −1 at 0.03 A g −1 ), excellent rate capability (e.g., 153.3 mAh g −1 at 2 A g −1 ), and long‐term cycling stability (e.g., 152.7 mAh g −1 after 400 cycles at 1.5 A g −1 ).
科研通智能强力驱动
Strongly Powered by AbleSci AI