法拉第效率
电池(电)
金属锂
锂(药物)
材料科学
电化学
电极
计算机科学
化学
物理
热力学
医学
功率(物理)
内分泌学
物理化学
作者
Jie Xiao,Qiuyan Li,Yujing Bi,Mei Cai,Bruce Dunn,Tobias Glossmann,Jun Liu,Tetsuya Ōsaka,Ryuta Sugiura,Bingbin Wu,Jihui Yang,Ji‐Guang Zhang,M. Stanley Whittingham
出处
期刊:Nature Energy
[Springer Nature]
日期:2020-06-25
卷期号:5 (8): 561-568
被引量:653
标识
DOI:10.1038/s41560-020-0648-z
摘要
Coulombic efficiency (CE) has been widely used in battery research as a quantifiable indicator for the reversibility of batteries. While CE helps to predict the lifespan of a lithium-ion battery, the prediction is not necessarily accurate in a rechargeable lithium metal battery. Here, we discuss the fundamental definition of CE and unravel its true meaning in lithium-ion batteries and a few representative configurations of lithium metal batteries. Through examining the similarities and differences of CE in lithium-ion batteries and lithium metal batteries, we establish a CE measuring protocol with the aim of developing high-energy long-lasting practical lithium metal batteries. The understanding of CE and the CE protocol are broadly applicable in other rechargeable metal batteries including Zn, Mg and Na batteries. Coulombic efficiency (CE) has been frequently used to assess the cyclability of newly developed materials for lithium metal batteries. The authors argue that caution must be exercised during the assessment of CE, and propose a CE testing protocol for the development of lithium metal batteries.
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