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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2021.9
- 수록면
- 255 - 266 (12page)
- DOI
- 10.33162/JAR.2021.9.21.3.255
이용수
초록· 키워드
오류제보하기
Purpose: Flexible lithium-ion batteries have been used as energy sources for wearable and flexible devices. However, their reliability in mechanical stress environments must be guaranteed for them to be stably used in these applications. In this study, the effect of mechanical fatigue on the performance and safety of a lithium polymer battery, which is a flexible lithium-ion battery, was investigated.
Methods: Mechanical fatigue tests were conducted under bending, torsion, and wrinkling (i.e., a combination of bending and torsion) modes at various fatigue rates and strains. The capacity degradation of these fatigued flexible lithium-ion batteries was evaluated using the charge–discharge test. Their safety was assessed using various environmental and electrical misuse tests in accordance with existing standards.
Results: The capacity degradation of all fatigued batteries was greater than that of the undeformed battery. In particular, the torsion and wrinkling stress had a greater effect on capacity degradation. The environmental and electrical misuse tests revealed that leakage, explosion, and ignition phenomena were not caused by mechanical fatigue.
Conclusion: Mechanical fatigue stress can be concluded to be the main factor affecting the performance degradation of flexible lithium-ion batteries. Furthermore, further studies are required to determine the root causes of this significant performance degradation.
Methods: Mechanical fatigue tests were conducted under bending, torsion, and wrinkling (i.e., a combination of bending and torsion) modes at various fatigue rates and strains. The capacity degradation of these fatigued flexible lithium-ion batteries was evaluated using the charge–discharge test. Their safety was assessed using various environmental and electrical misuse tests in accordance with existing standards.
Results: The capacity degradation of all fatigued batteries was greater than that of the undeformed battery. In particular, the torsion and wrinkling stress had a greater effect on capacity degradation. The environmental and electrical misuse tests revealed that leakage, explosion, and ignition phenomena were not caused by mechanical fatigue.
Conclusion: Mechanical fatigue stress can be concluded to be the main factor affecting the performance degradation of flexible lithium-ion batteries. Furthermore, further studies are required to determine the root causes of this significant performance degradation.
목차
1. 서론
2. 실험방법
3. 결과 및 고찰
4. 결론
References
참고문헌 (7)
참고문헌 신청
B. J. Kim / 2013 / Crack nucleation during mechanical fatigue in thin metal films on flexible substrates / Acta Materialia 61(9):3473~3481
J. K. Yang / 2018 / Effect of twisting fatigue on the electrical reliability of a metal interconnect on a flexible substrate / Journal of Materials Res 33(2):138~148
변재원 / 2013 / 휴대전자기기용 저용량 리튬이온 배터리의 충방전 열화 기구 분석 및 모니터링 / 신뢰성 응용연구 13(2):129~140
J. Y. Kim / 2019 / Evaluation of health and safety of mechanically fatigued rechargeable lithium polymer batteries for flexible electronics applications / Microelectronics Rel 100:113441
L. Greve / 2012 / Mechanical testing and macro-mechanical finite element simulation of the deformation, fracture, and short circuit initiation of cylindrical Lithium ion battery cells / J. Power Sources 214:377~385
J. K. Yang / 2018 / Effect of twisting fatigue on the electrical reliability of a metal interconnect on a flexible substrate / Journal of Materials Res 33(2):138~148
변재원 / 2013 / 휴대전자기기용 저용량 리튬이온 배터리의 충방전 열화 기구 분석 및 모니터링 / 신뢰성 응용연구 13(2):129~140
J. Y. Kim / 2019 / Evaluation of health and safety of mechanically fatigued rechargeable lithium polymer batteries for flexible electronics applications / Microelectronics Rel 100:113441
L. Greve / 2012 / Mechanical testing and macro-mechanical finite element simulation of the deformation, fracture, and short circuit initiation of cylindrical Lithium ion battery cells / J. Power Sources 214:377~385
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