Unveiling the Advances of Nanostructure Design for Alloy-Type Potassium-Ion Battery Anodes via In Situ TEM

时间:2020-07-07作者:浏览量:276


Unveiling the Advances of Nanostructure Design for Alloy-Type Potassium-Ion Battery Anodes via In Situ TEM

作者:Huang, HW (Huang, Huawen)[ 1 ] ; Wang, JW (Wang, Jiuwu)[ 1 ] ; Yang, XF (Yang, Xianfeng)[ 2 ] ; Hu, RZ (Hu, Renzong)[ 3 ] ; Liu, JL (Liu, Jinlong)[ 4 ] ; Zhang, L (Zhang, Lei)[ 1 ] ; Zhu, M (Zhu, Min)[ 3 ]


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ANGEWANDTE CHEMIE-INTERNATIONAL EDITION


DOI: 10.1002/anie.202004193


Early access icon在线发表日期: JUN 2020

文献类型:Article; Early Access


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摘要

Nanostructure design and in situ transmission electron microscopy (TEM) are combined to demonstrate Sb-based nanofibers composed of bunched yolk-shell building units as a significantly improved anode for potassium-ion batteries (PIBs). Particularly, a metal-organic frameworks (MOFs)-engaged electrospinning strategy coupled to a confined ion-exchange followed by a subsequent thermal reduction is proposed to fabricate yolk-shell Sb@C nanoboxes embedded in carbon nanofibers (Sb@CNFs). In situ TEM analysis reveals that the inner Sb nanoparticles undergo a significant volume expansion/contraction during the alloying/dealloying processes, while the void space can effectively relieve the overall volume change, and the plastic carbon shell maintains the structural integrity of electrode material. This work provides an important reference for the application of advanced characterization techniques to guide the optimization of electrode material design.


关键词

作者关键词:antimony; in situ TEM; metal-organic frameworks; nanostructure design; potassium-ion batteries


KeyWords Plus:METAL-ORGANIC-FRAMEWORKS; ELECTROCHEMICAL LITHIATION; CARBON COMPOSITE; ELECTRODES; BI


作者信息

通讯作者地址: Zhang, L (通讯作者)


显示更多South China Univ Technol, Guangdong Prov Key Lab Adv Energy Storage Mat, Sch Chem & Chem Engn, Guangzhou 510640, Peoples R China.

地址:


显示更多[ 1 ]‎ South China Univ Technol, Guangdong Prov Key Lab Adv Energy Storage Mat, Sch Chem & Chem Engn, Guangzhou 510640, Peoples R China

显示更多[ 2 ]‎ South China Univ Technol, Analyt & Testing Ctr, Guangzhou 510640, Peoples R China

显示更多[ 3 ]‎ South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Peoples R China

显示更多[ 4 ]‎ Univ Cambridge, Dept Engn, Cambridge CB3 0FA, England

电子邮件地址:celeizhang@scut.edu.cn


基金资助致谢

基金资助机构显示详情授权号

National Natural Science Foundation of China


51621001

51822104

51672143

51772336

National Key Research and Development Program of China

2016YFA0202604

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出版商

WILEY-V C H VERLAG GMBH, POSTFACH 101161, 69451 WEINHEIM, GERMANY


期刊信息

Impact Factor (影响因子): Journal Citation Reports

类别 / 分类

研究方向:Chemistry


Web of Science 类别:Chemistry, Multidisciplinary