Understanding and applying coulombic efficiency in lithium metal batteries

Jie Xiao; Qiuyan Li; Yujing Bi; Mei Cai; Bruce Dunn; Tobias Glossmann; Jun Liu; Tetsuya Osaka; Ryuta Sugiura; Bingbin Wu; Jihui Yang; Ji Guang Zhang; M. Stanley Whittingham

doi:10.1038/s41560-020-0648-z

Understanding and applying coulombic efficiency in lithium metal batteries

Jie Xiao^*, Qiuyan Li, Yujing Bi, Mei Cai, Bruce Dunn, Tobias Glossmann, Jun Liu, Tetsuya Osaka, Ryuta Sugiura, Bingbin Wu, Jihui Yang, Ji Guang Zhang, M. Stanley Whittingham

^*Corresponding author for this work

Research Organization for Nano & Life Innovation

Research output: Contribution to journal › Article › peer-review

281 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	561-568
Number of pages	8
Journal	Nature Energy
Volume	5
Issue number	8
DOIs	https://doi.org/10.1038/s41560-020-0648-z
Publication status	Published - 2020 Aug 1

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Fuel Technology
Energy Engineering and Power Technology

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abstract = "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.",

author = "Jie Xiao and Qiuyan Li and Yujing Bi and Mei Cai and Bruce Dunn and Tobias Glossmann and Jun Liu and Tetsuya Osaka and Ryuta Sugiura and Bingbin Wu and Jihui Yang and Zhang, {Ji Guang} and Whittingham, {M. Stanley}",

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AU - Xiao, Jie

AU - Li, Qiuyan

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AU - Dunn, Bruce

AU - Glossmann, Tobias

AU - Liu, Jun

AU - Osaka, Tetsuya

AU - Sugiura, Ryuta

AU - Wu, Bingbin

AU - Yang, Jihui

AU - Zhang, Ji Guang

AU - Whittingham, M. Stanley

N1 - Funding Information: This work is based on the discussion results from a workshop on ‘Standards and Protocols for Accelerating the Process from Discovery to Deployment’ held in 2019. This research is supported by the Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Vehicle Technologies of the US Department of Energy (DOE) through the Advanced Battery Materials Research (BMR) Program (Battery500 Consortium). PNNL is operated by Battelle for the DOE under contract DE-AC05-76RLO1830. Publisher Copyright: © 2020, Springer Nature Limited.

PY - 2020/8/1

Y1 - 2020/8/1

N2 - 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.

AB - 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.

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Understanding and applying coulombic efficiency in lithium metal batteries

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