硼酚
材料科学
堆积
法拉第效率
锂(药物)
基质(水族馆)
石墨烯
硼
纳米技术
化学工程
阳极
电极
物理化学
有机化学
化学
地质学
工程类
海洋学
内分泌学
医学
作者
Wei Shao,Chuang Hou,Zenghui Wu,Pengyu Zhang,Guòan Tai
出处
期刊:Nanotechnology
[IOP Publishing]
日期:2023-05-16
卷期号:34 (31): 315401-315401
被引量:6
标识
DOI:10.1088/1361-6528/acd121
摘要
The growth of artificial synthesis two-dimensional (2D) materials usually demands for suitable substrate due to their rare bulk allotropies. Borophene, as a typical artificial synthetic material, has been proved its substrate-growth on metal or nonmetals and its high theoretical specific capacity (1720 mAh g-1) for next-genatration electrode material, but structural instability and transfer difficulties have hindered the development of its applications. Here, a structurally stable and freestanding AA-stacked-α'-4H-borophene sheets have been synthesized byin situlithium eutectic salt-assisted synthetic method to realize the application of borophene in lithium-ion battery. The atomic structure of AA-α'-4H-borophene with interlayer VdWs was established by comparing the experimental observation with DFT optimal calculation. Different stacking configurations (AA- and AB-) of borophene was realized by a temperature-structure-photoluminescence intensity relationship, and the AA-stacked borophene exhibits higher specific capacity than AB structure. Based on electrochemical performance, the AA-borophene exhibits excellent rate capability and cycling performance due to its non-collapsible stacking configurations, which dominates great initial coulombic efficiency of 87.3% at 200 mA g-1superior to that of black phosphorus-based and borophene/graphene. Meanwhile, it still maintains the coulombic efficiency of 99.13% after 1000 cycles. It also shows a reversible capacity of 181 mAh g-1at 10 mA g-1between the voltage window of 0.01 and 2 V, which improves the reported capacity (43 mAh g-1) of bulk boron anode by over 430%. This work brings fantastic new view of fabricating stable, stacking and freestanding borophene and provides a significative idea on applications of borophene in energy storage domain.
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