Self-Sacrifice Template Construction of Uniform Yolk-Shell ZnS@C for Superior Alkali-Ion Storage
作者:
Xu, XJ (Xu, Xijun) [1] , [2] , [3] ; Li, FK (Li, Fangkun) [1] , [2] ; Zhang, DC (Zhang, Dechao) [1] , [2] ; Liu, ZB (Liu, Zhengbo) [1] , [2] ; Zuo, SY (Zuo, Shiyong) [1] , [2] ; Zeng, ZY (Zeng, Zhiyuan) [3] ; Liu, J (Liu, Jun) [1] , [2]
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卷9
期14
文献号2200247
DOI10.1002/advs.202200247
出版时间MAY 2022
在线发表MAR 2022
已索引2022-03-25
文献类型Article
摘要
Secondary batteries have been widespread in the daily life causing an ever-growing demand for long-cycle lifespan and high-energy alkali-ion batteries. As an essential constituent part, electrode materials with superior electrochemical properties play a vital role in the battery systems. Here, an outstanding electrode of yolk-shell ZnS@C nanorods is developed, introducing considerable void space via a self-sacrificial template method. Such carbon encapsulated nanorods moderate integral electronic conductivity, thus ensuring rapid alkali-ions/electrons transporting. Furthermore, the porous structure of these nanorods endows enough void space to mitigate volume stress caused by the insertion/extraction of alkali-ions. Due to the unique structure, these yolk-shell ZnS@C nanorods achieve superior rate performance and cycling performance (740 mAh g(-1) at 1.0 A g(-1) after 540 cycles) for lithium-ion batteries. As a potassium-ion batteries anode, they achieve an ultra-long lifespan delivering 211.1 mAh g(-1) at 1.0 A g(-1) after 5700 cycles. The kinetic analysis reveals that these ZnS@C nanorods with considerable pseudocapacitive contribution benefit the fast lithiation/delithiation. Detailed transmission electron microscopy (TEM) and X-ray diffraction (XRD) analyses indicate that such yolk-shell ZnS@C anode is a typical reversible conversion reaction mechanism accomplished by alloying processes. This rational design strategy opens a window for the development of superior energy storage materials.
关键词
作者关键词alkali-ion batteriesanodelong-cycle lifeyolk-shellZnS@C nanorods
Keywords PlusPOROUS CARBON POLYHEDRAHIGH-PERFORMANCE ANODELITHIUM-IONSODIUMNANOPARTICLESNANOSPHERESNANOBOXESMECHANISMGRAPHENE
作者信息
通讯作者地址
Liu, Jun
(通讯作者)
South China Univ Technol, Sch Chem & Chem Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Peoples R China
通讯作者地址
Liu, Jun
(通讯作者)
South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Peoples R China
地址
1 South China Univ Technol, Sch Chem & Chem Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Peoples R China
2 South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Peoples R China
3 City Univ Hong Kong, Dept Mat Sci & Engn, Hong Kong 999077, Peoples R China
电子邮件地址msjliu@scut.edu.cn
类别/分类
研究方向ChemistryScience & Technology - Other TopicsMaterials Science