상세정보
학술지
Efficient Cell Design and Fabrication of Concentration-gradient Composite Electrodes for High-power and High-energy-density All-solid-state Batteries
- 발행일
- 202002
- 출처
- ETRI Journal, v.42 no.1, pp.129-137
- ISSN
- 1225-6463
- 출판사
- 한국전자통신연구원 (ETRI)
- 협약과제
- 19JB1600, 나노입자의 차원 제어를 통한 흑연/고체전해질 복합체 기반의 3차원 구조 음극 설계 및 조성 최적화, 이영기
- 초록
- All-solid-state batteries are promising energy storage devices in which high-energy-density and superior safety can be obtained by efficient cell design and the use of nonflammable solid electrolytes, respectively. This paper presents a systematic study of experimental factors that affect the electrochemical performance of all-solid-state batteries. The morphological changes in composite electrodes fabricated using different mixing speeds are carefully observed, and the corresponding electrochemical performances are evaluated in symmetric cell and half-cell configurations. We also investigate the effect of the composite electrode thickness at different charge/discharge rates for the realization of all-solid-state batteries with high-energy-density. The results of this investigation confirm a consistent relationship between the cell capacity and the ionic resistance within the composite electrodes. Finally, a concentration-gradient composite electrode design is presented for enhanced power density in thick composite electrodes; it provides a promising route to improving the cell performance simply by composite electrode design.
- KSP 제안 키워드
- Cell configuration, Composite Electrode, Concentration-gradient, Design and fabrication, Discharge rates, Electrochemical performance, Electrode thickness, Gradient composite, Half-cells, High energy density, High power
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