阳极
锑
材料科学
纳米颗粒
储能
激光烧蚀
涂层
电化学
激光器
分析化学(期刊)
碳纤维
化学工程
纳米技术
光学
化学
电极
物理
复合材料
物理化学
冶金
工程类
功率(物理)
复合数
量子力学
色谱法
作者
Hui Gao,Jeongyeon Lee,Qixiao Lu,Yoonbin Kim,Kang Ho Shin,Ho Seok Park,Zhonghua Zhang,Yoon Suk Lee
出处
期刊:Small
[Wiley]
日期:2022-11-24
卷期号:19 (4)
被引量:4
标识
DOI:10.1002/smll.202205681
摘要
Abstract Potassium‐ and sodium‐ion batteries (PIBs and SIBs) have great potential as the next‐generation energy application owing to the natural abundance of K and Na. Antimony (Sb) is a suitable alloying‐type anode for PIBs and SIBs due to its high theoretical capacity and proper operation voltage; yet, the severe volume variation remains a challenge. Herein, a preparation of N‐doped carbon‐wrapped Sb nanoparticles (L‐Sb/NC) using pulsed laser ablation and polydopamine coating techniques, is reported. As the anode for PIB and SIB, the L‐Sb/NC delivers superior rate capabilities and excellent cycle stabilities (442.2 and 390.5 mA h g −1 after 250 cycles with the capacity decay of 0.037% and 0.038% per cycle) at the current densities of 0.5 and 1.0 A g −1 , respectively. Operando X‐ray diffraction reveals the facilitated and stable potassiation and sodiation mechanisms of L‐Sb/NC enabled by its optimal core–shell structure. Furthermore, the SIB full cell fabricated with L‐Sb/NC and Na 3 V 2 (PO 4 ) 2 F 3 shows outstanding electrochemical performances, demonstrating its practical energy storage application.
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