阳极
电解质
电池(电)
材料科学
介电谱
锂(药物)
X射线光电子能谱
阴极
电化学
化学工程
储能
纳米技术
电极
溶解
化学
工程类
功率(物理)
物理
量子力学
医学
物理化学
内分泌学
出处
期刊:Journal of The Electrochemical Society
[The Electrochemical Society]
日期:2024-07-01
卷期号:171 (7): 070545-070545
标识
DOI:10.1149/1945-7111/ad6717
摘要
Lithium (Li) is a sought-after element for thrift, and considerable effort is being invested in conserving, reusing, and optimizing its chemical capabilities as a key material for energy storage systems. Anode-free lithium-metal batteries (AFLMB) provide the ability to utilize the exact amount of Li in the battery, thereby increasing both the specific capacity and safety of the battery. AFLMBs are widely recognized and investigated due to their promised benefits but have not yet become commercial, primarily because they suffer from uneven Li deposition. This issue results in Li dendrite formation, electrolyte consumption due to poor solid electrolyte interphase properties, and, generally, safety concerns. Overcoming these challenges would bring humanity one step closer to a desirable zero-carbon emission future, as more energy could be stored in less volume and weight. In this study, we examined an AFLMB system and investigated different physical and electrochemical factors to understand their effects on the nature of Li deposition/dissolution processes and on the cyclability of the battery. The effects of electrode architecture, cycling temperature, current density in the first charge, and salt composition on the battery were investigated using electrochemical impedance spectroscopy, scanning electron microscopy, and X-ray photoelectron spectroscopy.
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