Integrating Nanoreactor with O–Nb–C Heterointerface Design and Defects Engineering Toward High-Efficiency and Longevous Sodium Ion Battery

Luo Dan; Ma Chuyin; Hou JunfengZhang ZhenFeng RenfeiYang LeixinZhang XiaowenLu HanLiu JiabingLi YebaoZhang YongguangWang XinChen Zhongwei

首页> 外文期刊>Advanced energy materials >Integrating Nanoreactor with O–Nb–C Heterointerface Design and Defects Engineering Toward High-Efficiency and Longevous Sodium Ion Battery

【24h】

Integrating Nanoreactor with O–Nb–C Heterointerface Design and Defects Engineering Toward High-Efficiency and Longevous Sodium Ion Battery

机译：Integrating Nanoreactor with O–Nb–C Heterointerface Design and Defects Engineering Toward High-Efficiency and Longevous Sodium Ion Battery

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相关主题

摘要

Sodium-ion batteries (SIBs) have attracted much attention for their advantages of high operating voltage, environmental friendliness and cost-effectiveness. However, the intrinsic defects of anode materials (such as poor electrical conductivity, sluggish kinetics, and large volume changes) hinder them from meeting the requirements for practical applications. Herein, a Nb2O5@carbon nanoreactor containing both a O-Nb-C heterointerface and oxygen vacancies (Nb2O5-x@MEC) as an anode material is designed to drive SIBs toward extraordinary capacity and ultra-long cycle life. The heterostructured nanoreactor both effectively immobilizes defective Nb2O5 by forming O-Nb-C heterointerface and offers homogeneous dispersion of Nb2O5 with desirable content to prevent their agglomeration. In addition, vast active interfaces, favored electrolyte infiltration, and a well-structured ion-electron transportation channel are enabled by the framework, improving sodium ion storage and enhancing redox reaction kinetics. The enhancement brought by spatial confinement, defect implantation and heterointerface design give the composites a highly reversible sodiation-desodiation process and remarkable structural stability. By virtue of these superiorities, Nb2O5-x@MEC delivers excellent performance, i.e., high areal capacity over 1.1 mAh cm(-2), admirable rate capability up to 20 A g(-1), and ultra-long cycling performance over 5000 cycles, holding great promise for utilization in practically viable SIBs.

著录项

来源
《Advanced energy materials》 |2022年第18期|2103716.1-2103716.10|共10页
作者
Luo Dan; Ma Chuyin; Hou JunfengZhang ZhenFeng RenfeiYang LeixinZhang XiaowenLu HanLiu JiabingLi YebaoZhang YongguangWang XinChen Zhongwei;
展开▼
作者单位

South China Normal Univ, Sch Informat & Optoelect Sci & Engn, Guangzhou 510006, Guangdong, Peoples R China|South China Normal Univ, South China Acad Adv Optoelect, Guangzhou 510006, Guangdong, Peoples R China|Univ Waterloo, Dept Chem Engn, Waterloo Inst N;

South China Normal Univ, Sch Informat & Optoelect Sci & Engn, Guangzhou 510006, Guangdong, Peoples R China|South China Normal Univ, South China Acad Adv Optoelect, Guangzhou 510006, Guangdong, Peoples R China;

North Minzu Univ, Sch Mat Sci & Engn, Key Lab Powder Mat & Adv Ceram, Yinchuan 750021, Ningxia, Peoples R ChinaUniv Waterloo, Dept Chem Engn, Waterloo Inst Nanotechnol, Waterloo, ON N2L 3G1, CanadaCanadian Light Source, Saskatoon, SK S7N 0X4, CanadaHebei Univ Technol, Sch Mat Sci & Engn, Tianjin 300130, Peoples R ChinaSouth China Normal Univ, Int Acad Optoelect Zhaoqing, Zhaoqing 510006, Guangdong, Peoples R ChinaSouth China Normal Univ, Sch Informat & Optoelect Sci & Engn, Guangzhou 510006, Guangdong, Peoples R China|South China Normal Univ, South China Acad Adv Optoelect, Guangzhou 510006, Guangdong, Peoples R China|South China Normal Univ, Int Acad Optoelect Zh;

展开▼
收录信息
原文格式 PDF
正文语种英语
中图分类
关键词
defects; heterointerfaces; niobium pentoxide; sodium ion batteries; structure design;

Integrating Nanoreactor with O–Nb–C Heterointerface Design and Defects Engineering Toward High-Efficiency and Longevous Sodium Ion Battery

摘要

著录项

相关主题

期刊订阅