DNA-Guided Li2S Nanostructure Deposition for High-Sulfur-Loaded Li-S Batteries
- Authors
- Li, M.; Song, Seunghyun; Li, Yang; Chen, Tao; Bae, Joonho
- Issue Date
- Jun-2023
- Publisher
- AMER CHEMICAL SOC
- Keywords
- deoxyribonucleic acid; 3D Li2S electrodeposition; high-sulfur loading; metal-organic frameworks; lithium-sulfur battery
- Citation
- ACS APPLIED NANO MATERIALS, v.6, no.13, pp 11037 - 11048
- Pages
- 12
- Journal Title
- ACS APPLIED NANO MATERIALS
- Volume
- 6
- Number
- 13
- Start Page
- 11037
- End Page
- 11048
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/88614
- DOI
- 10.1021/acsanm.3c00770
- ISSN
- 2574-0970
2574-0970
- Abstract
- The low areal capacity caused by low sulfur loading (<2.0mgcm(-2)) and the poor sulfur utilization due to theinsulating Li2S layer covering the cathode always limitthe practical applications of lithium-sulfur batteries (Li-Sbatteries). Deoxyribonucleic acid (DNA)-controlled nucleation andgrowth of Li2S in the Li-S system were first studiedin this work. The negatively charged sugar-phosphate backbone of DNAcould attract Li+ ions and allow crystalline Li2S to grow along the DNA chains. The electrodeposition of Li2S with a unique three-dimensional nanostructure during the polysulfideconversion and deposition process was realized, which can not onlyboost electron and ion transport but also expose and retain more activesites in the cathode. A Li-S battery with ultrahigh sulfurloading of 10 mg cm(-2) and a low electrolyte/sulfurratio of 6.08 delivered a high areal capacity of 8.1 mA h cm(-2), which is more than 2 times that of commercial Li-ion batteries,demonstrating a great enhancement of the Li-S battery comparedto other studies. Therefore, this study provides an effective strategyof DNA-guided 3D Li2S deposition for achieving high-sulfur-loadingLi-S batteries.
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