Toward practical all-solid-state lithium-ion batteries with high energy density and safety: Comparative study for electrodes fabricated by dry- and slurry-mixing processes
- Title
- Toward practical all-solid-state lithium-ion batteries with high energy density and safety: Comparative study for electrodes fabricated by dry- and slurry-mixing processes
- Author
- 정윤석
- Keywords
- Batteries; Solid electrolytes; Electrodes; Solid-state batteries; Composites
- Issue Date
- 2018-02
- Publisher
- ELSEVIER SCIENCE BV
- Citation
- JOURNAL OF POWER SOURCES, v. 375, page. 93-101
- Abstract
- Owing to their potential for greater safety, higher energy density, and scalable fabrication, bulk-type all-solidstate lithium-ion batteries (ASLBs) employing deformable sulfide superionic conductors are considered highly promising for applications in battery electric vehicles. While fabrication of sheet-type electrodes is imperative from the practical point of view, reports on relevant research are scarce. This might be attributable to issues that complicate the slurry-based fabrication process and/or issues with ionic contacts and percolation. In this work, we systematically investigate the electrochemical performance of conventional dry-mixed electrodes and wet slurry fabricated electrodes for ASLBs, by varying the different fractions of solid electrolytes and the mass loading. This information calls for a need to develop well-designed electrodes with better ionic contacts and to improve the ionic conductivity of solid electrolytes. As a scalable proof-of-concept to achieve better ionic contacts, a premixing process for active materials and solid electrolytes is demonstrated to significantly improve electrochemical performance. Pouch-type 80 x 60 mm(2) all-solid-state LiNi0.6Co0.2Mn0.2O2/graphite full-cells fabricated by the slurry process show high cell-based energy density (184 W h kg(-1) and 432 W h L-1). For the first time, their excellent safety is also demonstrated by simple tests (cutting with scissors and heating at 110 degrees C).
- URI
- https://www.sciencedirect.com/science/article/abs/pii/S0378775317314908?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/117686
- ISSN
- 0378-7753; 1873-2755
- DOI
- 10.1016/j.jpowsour.2017.11.031
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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