An in-situ X-ray computed tomography imaging apparatus with stack pressures for rechargeable batteries

被引：2

作者：

Miao, Ning ^{[1
,2
,3
]}

Hai, Bo ^{[4
]}

Wang, Shanfeng ^{[5
]}

Ni, Jun ^{[2
,3
]}

Li, Xiang ^{[5
,6
]}

Wei, Hang ^{[2
,3
]}

Zhang, Kai ^{[2
,5
]}

Wang, Xiaolong ^{[2
]}

Huang, Weifeng ^{[1
,2
]}

机构：

[1] Qiannan Normal Univ Nationalities, Coll Chem & Chem Engn, Guizhou 558000, Peoples R China

[2] Beijing Sci Star Technol Co Ltd, China Italy Joint Lab Inst Operando Instrumentat, Beijing 100070, Peoples R China

[3] Inner Mongolia Univ, Coll Chem & Chem Engn, Inner Mongolia Engn & Technol, Res Ctr Catalyt Convers & Utilizat Carbon Resource, Hohhot 010021, Peoples R China

[4] Inner Mongolia Agr Univ, Dept Sci, Hohhot 010018, Peoples R China

[5] Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China

[6] China Automot Battery Res Inst Co Ltd, Beijing 10086, Peoples R China

来源：

SCRIPTA MATERIALIA | 2023年 / 229卷

基金：

中国国家自然科学基金;

关键词：

In -situ CT imaging; Interface microstructures; Dynamic mechanical analysis; Dendritic growth; Lithium -ion batteries; MECHANICAL PRESSURE; LITHIUM; GROWTH;

D O I：

10.1016/j.scriptamat.2023.115381

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Herein, a novel in-situ X-ray computed tomography (CT) imaging apparatus with stack pressures is proposed to detect the micro-structural evolution at the interface during the electrochemical process. And the relationship between the electrochemical performance and the interface morphology of lithium metal batteries has been effectively investigated through this in-situ technology. It can be observed that the growth of Li dendrites and their morphology evolution are directly dependent on the stack pressures. The Li dendrite grows from the needlestructure to the island-structure, accompanied by the tip-growth mode transferring to the base-growth mode in the range of the critical pressure. Moreover, the growth of Li dendrites can also be effectively inhibited when loading a suitable stack pressure. This novel in-situ CT imaging technology provides a feasible way to underlying the interface micro-structure evolution, electrochemical-pressure complexions, and safety of next-generation rechargeable batteries.

引用

页数：5

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