Epitaxial growth of Cu2-xSe on Cu(220)crystal plane as high property anode for sodium storage

扫码查看

原文链接

万方数据

外文摘要：Three-dimentional(3D)transition metal selenides with sufficient channels could produce significant su-periority on enhancing reaction kinetics for sodium-ion batteries.However,the thorough exploration of 3D architecture with a facile strategy is still challenging.Here we report that a polycrystalline Cu2-xSe film was epitaxial grown on(220)facets-exposed Cu by direct selenization of a nanoporous Cu skeleton,which is obtained by dealloying rolled CuMn@Cu alloy foil.Density functional theory calculation result shows strong adsorption energy for Se atoms on Cu(220)planes during selenization reaction,render-ing a low energy consumption.By virtue of this core-shell 3D nanoporous architecture to offer abundant active sites and endow fast electron/ion transportation,the nanoporous Cu2-xSe@Cu-0.15 composite elec-trode exhibits remarkable sodium-ion storage properties with high reversible capacity of 950.6 μAh/cm2 at 50 μA/cm2,suprior rate capability of 457.6 μAh/cm2 at 500 μA/cm2,as well as an ultra-long stability at a high current density.Mechanism investigation reveals that the electrochemical reaction is a typical conversion-type reaction with different intermediates.This novel electrode synthetic strategy provides useful instructions to design the high-performance anode material for sodium-ion batteries.

外文关键词：

Cu2se3D architectureAnode materialsDensity functional theory calculationSodium-ion battery

作者：

Zhijia Zhang、Shihao Sun、Yuefang Chen、Yanhao Wei、Mengmeng Zhang、Chunsheng Li、Yan Sun、Shaofei Zhang、Yong Jiang

展开 >

作者单位：

School of Materials Science and Engineering,Institute of Quantum Materials and Devices,State Key Laboratory of Separation Membrane and Membrane Processes,Tiangong University,Tianjin 300387,China

School of Chemistry and Life Sciences,Suzhou University of Science and Technology,Suzhou 215009,China

Key Laboratory of Advanced Electrode Materials for Novel Solar Cells for Petroleum and Chemical Industry of China,Suzhou University of Science and Technology,Suzhou 215009,China

Hebei Key Laboratory of Flexible Functional Materials/Hebei Key Laboratory of Material Near-Net Forming Technology,School of Materials Science and Engineering,Hebei University of Science and Technology,Shijiazhuang 050018,China

展开 >

基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of China

项目编号：

522710115210229152101251

出版年：

2024

DOI：

10.1016/j.cclet.2023.108922

中国化学快报(英文版)

中国化学会

中国化学快报(英文版)

CSTPCD

影响因子：0.771

ISSN：1001-8417

年,卷(期)：2024.35(7)