纳米片
阳极
兴奋剂
X射线光电子能谱
锌
拉曼光谱
材料科学
电池(电)
电化学
离子
电极
化学工程
化学
纳米技术
光电子学
冶金
物理化学
有机化学
物理
量子力学
光学
工程类
功率(物理)
作者
Yuzhu Qian,Hongrui Wang,Xinni Li,Ting Song,Yong Pei,Li Liu,Bei Long,Xiongwei Wu,Xianyou Wang
标识
DOI:10.1016/j.jechem.2023.03.002
摘要
The development of insertion-type anodes is the key to designing "rocking chair" zinc-ion batteries. However, there is rare report on high mass loading anode with high performances. Here, {001}-oriented BiOCl nanosheets with Sn doping are proposed as a promising insertion-type anode. The designs of cross-linked CNTs conductive network, {001}-oriented nanosheet, and Sn doping significantly enhance ion/electron transport, proved via experimental tests and theoretical calculations (density of states and diffusion barrier). The H+/Zn2+ synergistic co-insertion mechanism is proved via ex situ XRD, Raman, XPS, and SEM tests. Accordingly, this optimized electrode delivers a high reversible capacity of 194 mA h g−1 at 0.1 A g−1 with a voltage of ≈0.37 V and an impressive cyclability with 128 mA h g−1 over 2500 cycles at 1 A g−1. It also shows satisfactory performances at an ultrahigh mass loading of 10 mg cm−2. Moreover, the Sn-BiOCl//MnO2 full cell displays a reversible capacity of 85 mA h g−1 at 0.2 A g−1 during cyclic test.
科研通智能强力驱动
Strongly Powered by AbleSci AI