Visualizing plating-induced cracking in lithium-anode solid-electrolyte cells

被引：339

作者：

Ning, Ziyang ^{[1
]}

Jolly, Dominic Spencer ^{[1
]}

Li, Guanchen ^{[2
,3
]}

De Meyere, Robin ^{[1
]}

Pu, Shengda D. ^{[1
]}

Chen, Yang ^{[1
]}

Kasemchainan, Jitti ^{[1
,2
]}

Ihli, Johannes ^{[4
]}

Gong, Chen ^{[1
]}

Liu, Boyang ^{[1
,2
]}

Melvin, Dominic L. R. ^{[1
,2
]}

Bonnin, Anne ^{[4
]}

Magdysyuk, Oxana ^{[5
]}

Adamson, Paul ^{[1
,2
]}

Hartley, Gareth O. ^{[1
,2
]}

Monroe, Charles W. ^{[2
,3
]}

Marrow, T. James ^{[1
]}

Bruce, Peter G. ^{[1
,2
,6
,7
]}

机构：

[1] Univ Oxford, Dept Mat, Oxford, England

[2] Faraday Inst, Didcot, Oxon, England

[3] Univ Oxford, Dept Engn Sci, Oxford, England

[4] Paul Scherrer Inst, Villigen, Switzerland

[5] Diamond Light Source, Didcot, Oxon, England

[6] Univ Oxford, Dept Chem, Oxford, England

[7] Univ Oxford, Henry Royce Inst, Oxford, England

来源：

NATURE MATERIALS | 2021年 / 20卷 / 08期

基金：

英国工程与自然科学研究理事会; 瑞士国家科学基金会;

关键词：

INTERFACIAL REACTIVITY; ELECTRODEPOSITION; KINETICS; GROWTH; DEFORMATION; PENETRATION; TEMPERATURE; PROPAGATION; CHALLENGES; DEPOSITION;

D O I：

10.1038/s41563-021-00967-8

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Lithium dendrite (filament) propagation through ceramic electrolytes, leading to short circuits at high rates of charge, is one of the greatest barriers to realizing high-energy-density all-solid-state lithium-anode batteries. Utilizing in situ X-ray computed tomography coupled with spatially mapped X-ray diffraction, the propagation of cracks and the propagation of lithium dendrites through the solid electrolyte have been tracked in a Li/Li6PS5Cl/Li cell as a function of the charge passed. On plating, cracking initiates with spallation, conical 'pothole'-like cracks that form in the ceramic electrolyte near the surface with the plated electrode. The spallations form predominantly at the lithium electrode edges where local fields are high. Transverse cracks then propagate from the spallations across the electrolyte from the plated to the stripped electrode. Lithium ingress drives the propagation of the spallation and transverse cracks by widening the crack from the rear; that is, the crack front propagates ahead of the Li. As a result, cracks traverse the entire electrolyte before the Li arrives at the other electrode, and therefore before a short circuit occurs. Lithium dendrite propagation through ceramic electrolytes can prevent the realization of high-energy-density all-solid-state lithium-anode batteries. The propagation of cracks and lithium dendrites through a solid electrolyte has now been tracked as a function of charge.

引用

页码：1121 / +

页数：10

共 49 条

[1] Status and challenges in enabling the lithium metal electrode for high-energy and low-cost rechargeable batteries [J].