.png){kind=icon}
返回
Dendritic cracking in solid electrolytes driven by lithium insertion
.png){kind=icon}
PRE
AI
DOI：10.1016/j.jpowsour.2019.227226.png)
.png){kind=icon}
.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
During charging of a battery with a lithium metal electrode and a solid electrolyte, a crack in the electrolyte adjacent to the metal electrode will be infiltrated by lithium, forming a dendrite. As further lithium is inserted into the crack, pressure in it will build up. The pressure in the lithium in the crack rises very rapidly during normal rates of charging, reaching 1 GPa within seconds. Such high pressure may cause the crack to propagate; crack extension will relax the pressure in the crack, but high pressure will be restored quickly in the longer crack, which will again propagate. This process continues until the crack touches the counter electrode, causing a short-circuit. Alternatively, the high pressure in the crack can block the redox reaction that injects lithium into it, making the crack non-propagating. We find that this situation occurs for cracks shorter than a critical length. Therefore, to avoid short-circuits of this type it is a requirement that the pressure be sufficient to block the redox reaction before dendrite extension takes place. This places restrictions on allowable lengths for pre-existing cracks and on permissible charging rates. We also find that dendrite cracks can grow subcritically due to cyclic fatigue.
Keyword:
Solid state battery
Ceramic separator
Lithium dendrite
Crack growth
Fracture analysis
AI总结
对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
IF:
7.9
论文数:
3.7W
被引数:
17.3W
机构
引用论文
Selective deposition and stable encapsulation of lithium through heterogeneous seeded growth通过异质籽晶生长实现锂的选择性沉积和稳定封装.png)
NATURE ENERGY
NATURE ENERGYIF60.1
PREAI
分享收藏A finite strain electro-chemo-mechanical theory for ion transport with application to binary solid electrolytes离子传输的有限应变电化学力学理论及其在二元固体电解质中的应用
PREAI
分享收藏分享收藏A preliminary investigation of fracture toughness of Li7La3Zr2O12 and its comparison to other solid Li-ion conductorsLi7La3Zr2O12断裂韧性的初步研究及其与其他固体锂离子导体的比较MATERIALS LETTERS
MATERIALS LETTERSIF2.7
PREAI
分享收藏Reviving the lithium metal anode for high-energy batteries复兴高能电池的锂金属阳极NATURE NANOTECHNOLOGY
NATURE NANOTECHNOLOGYIF34.9
PREAI
分享收藏Behavior of Secondary Lithium and Aluminum‐Lithium Electrodes in Propylene Carbonate碳酸丙烯酯中二次锂和铝锂电极的行为
PREAI
分享收藏The Effects of Adding Mass to the Legs on the Energetics and Biomechanics of Walking增加腿部质量对步行能量和生物力学的影响
OAAI
OAAI分享收藏
查看更多内容