High-Energy-Density, Long-Life Li-Metal Batteries via Application of External Pressure
- Authors
- Kim, Hun; Lee, Su-Hyun; Kim, Jae-Min; Yoon, Chong Seung; Sun, Yang-Kook
- Issue Date
- Jun-2023
- Publisher
- AMER CHEMICAL SOC
- Citation
- ACS ENERGY LETTERS, v.8, no.7, pp.2970 - 2978
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACS ENERGY LETTERS
- Volume
- 8
- Number
- 7
- Start Page
- 2970
- End Page
- 2978
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/188753
- DOI
- 10.1021/acsenergylett.3c00910
- ISSN
- 2380-8195
- Abstract
- Theapplication of commercially available carbonate-basedelectrolytesto Li-metal batteries (LMBs) is challenging because of the uncontrollableside reactions of the electrolytes with Li anodes. Herein, a practicalcarbonate-electrolyte-based LMB with a high areal capacity and longcycle life is proposed. The cycling stability of the proposed LMBis established by applying an external compressive pressure (1200kPa) and a boehmite-coated separator to prevent the short circuitof the electrodes. The external pressure drives the growth of theLi metal as a dense uniform layer instead of dendrites and mitigatesthe formation of microcracks in the charged Ni-rich layered cathode.The unprecedented cycling stability of the stacked LMB with a Ni-richlayered cathode, retaining 82.0% of its initial capacity after 500cycles, can prove instrumental in realizing practical high-energy-densityLMBs, thus demonstrating the possibility of employing cell compressionto increase the life and energy density of LMBs.
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