WO3 Nanowire/Carbon Nanotube Interlayer as a Chemical Adsorption Mediator for High-Performance Lithium-Sulfur Batteries
- Title
- WO3 Nanowire/Carbon Nanotube Interlayer as a Chemical Adsorption Mediator for High-Performance Lithium-Sulfur Batteries
- Author
- 선양국
- Keywords
- lithium-sulfur batteries; tungsten oxide nanowire; interlayer; thiosulfate mediator
- Issue Date
- 2021-01
- Publisher
- MDPI
- Citation
- MOLECULES, v. 26, no. 2, artkcle no. 377, page. 1-13
- Abstract
- We developed a new nanowire for enhancing the performance of lithium-sulfur batteries. In this study, we synthesized WO3 nanowires (WNWs) via a simple hydrothermal method. WNWs and one-dimensional materials are easily mixed with carbon nanotubes (CNTs) to form interlayers. The WNW interacts with lithium polysulfides through a thiosulfate mediator, retaining the lithium polysulfide near the cathode to increase the reaction kinetics. The lithium-sulfur cell achieves a very high initial discharge capacity of 1558 and 656 mAh g−1 at 0.1 and 3 C, respectively. Moreover, a cell with a high sulfur mass loading of 4.2 mg cm−2 still delivers a high capacity of 1136 mAh g−1 at a current density of 0.2 C and it showed a capacity of 939 mAh g−1 even after 100 cycles. The WNW/CNT interlayer maintains structural stability even after electrochemical testing. This excellent performance and structural stability are due to the chemical adsorption and catalytic effects of the thiosulfate mediator on WNW.
- URI
- https://www.mdpi.com/1420-3049/26/2/377https://repository.hanyang.ac.kr/handle/20.500.11754/175476
- ISSN
- 1420-3049
- DOI
- 10.3390/molecules26020377
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
- Files in This Item:
- WO3 NanowireCarbon Nanotube Interlayer as a Chemical Adsorption Mediator for High-Performance Lithium-Sulfur Batteries.pdfDownload
- Export
- RIS (EndNote)
- XLS (Excel)
- XML