An effective Ni(OH)(2) optimization strategy via Cu2+ and Ni3+ co-doping for high capacity and long life-span lithium ion batteries

时间:2021-04-23作者:浏览量:341


An effective Ni(OH)(2) optimization strategy via Cu2+ and Ni3+ co-doping for high capacity and long life-span lithium ion batteries

作者:Zhang, JH (Zhang, Junhao)[ 1,2 ] ; Li, SB (Li, Shaobo)[ 1,2 ] ; Hu, RZ (Hu, Renzong)[ 1,2 ] ; Yuan, B (Yuan, Bin)[ 1,2 ]

 

IONICS

 

DOI: 10.1007/s11581-021-03951-z

 

Early access icon在线发表日期: MAR 2021

文献类型:Article; Early Access

 

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摘要

Although novel anode materials made of transition metal hydroxide can initially exhibit high capacity, their cycling performances would rapidly decline due to the poor structural stability and low electrical conductivity. Herein, we demonstrated a novel design strategy to prepare a Cu2+ and Ni3+ co-doped nickel-based layered double hydroxide (LDH) by a simple one-step co-precipitation method. The well-doped Cu2+ shortens the band gap and enhances the interlamellar spacing of the co-doped LDH, thus promoting the migration of electrons and lithium ions, and increasing the stability of layered structure. Moreover, in situ generated Ni3+ not only shorten the overall band gap but also improve the pseudocapacitance of the Ni-based LDH material. As a result, the co-doped nickel-based LDH exhibit an ultra-high capacity of 942.5 mAh g(-1) after 1000 cycles under the rate of 2 A g(-1), which behaves outstanding cycling performance in comparison with all the reported nickel-based hydroxide anode materials to our knowledge. In addition, the reversible discharge capacity at 1 A g(-1) of the co-doped nickel-based layered double hydroxide anode at a low voltage window (0.01 similar to 1.5 V) is more than four times of that of the common Ni(OH)(2) anode after 800 cycles.

 

关键词

作者关键词:Nickel-based hydroxide; Lithium ion battery; Anode; Co-doping; Cycling performance

 

作者信息

通讯作者地址:

 

South China University of Technology South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510640, Peoples R China.

Key Lab Adv Energy Storage Mat Guangdong Prov, Guangzhou, Peoples R China.

通讯作者地址: Yuan, B (通讯作者)

 

显示更多         South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510640, Peoples R China.

通讯作者地址: Yuan, B (通讯作者)

           Key Lab Adv Energy Storage Mat Guangdong Prov, Guangzhou, Peoples R China.

地址:

 

显示更多         [ 1 ]‎ South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510640, Peoples R China

           [ 2 ]‎ Key Lab Adv Energy Storage Mat Guangdong Prov, Guangzhou, Peoples R China

电子邮件地址:apsheng@scut.edu.cn

 

基金资助致谢

基金资助机构         授权号

Fundamental and Applied Fundamental Funds of Guangdong - Regional Joint Fund for Youth Project

 

2020A1515110980

Training Program of Major Basic Research Project of Provincial Natural Science Foundation of Guangdong

 

2017B030308001

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出版商

SPRINGER HEIDELBERG, TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY

 

期刊信息

Impact Factor (影响因子): Journal Citation Reports

类别 / 分类

研究方向:Chemistry; Electrochemistry; Physics

 

Web of Science 类别:Chemistry, Physical; Electrochemistry; Physics, Condensed Matter