화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Applied Chemistry for Engineering, Vol.29, No.5, 549-555, October, 2018
DOI10.14478/ace.2018.1043  Export Citation
울트라 배터리 용 전해액 첨가제와 Nano-Pb/AC 음극의 전기화학적 특성
Electrochemical Characteristics of Electrolyte Additives and Nano-Pb/AC Anode for Ultra Batteries
김근중, 이종대†
  • 충북대학교 화학공학과
Geun Joong Kim, and Jong Dae Lee†
  • Department of Chemical Engineering, Chungbuk National University, 1 Chungdaero, Seowongu, Cheongju, Chungbuk 28644, Korea
E-mail:
초록
본 연구에서는 울트라 배터리의 전기화학적 성능을 향상시키기 위해서 Nano-Pb/Activated Carbon (Nano-Pb/AC) 복합 소재와 전해액 첨가제의 특성이 조사되었다. 제조된 복합 소재의 물리적 특성은 FE-SEM, TEM, XPS, BET를 이용하여 분석하였고, 울트라 배터리의 전기화학적 성능은 사이클, 율속, 임피던스 테스트를 통해 조사되었다. 납 산 배터리에 비하여 나노 납 함량이 9 wt%인 복합소재로 코팅된 울트라 배터리는 사이클 성능이 150%로 개선되었으며, 1-5 C 율속 테스트에서 방전 용량이 119-122%로 증가되었다. 또한 임피던스 테스트 결과 나노 납 함량이 증가할수록 내부 저항의 크기가 작아지는 것을 확인하였다. 전해액 첨가제가 0.45 vol% 포함된 배터리의 장기 사이클 성능은 140%로 향상되었다.
In this study, the electrochemical properties of nano-Pb/activated carbon (nano-Pb/AC) composites and electrolyte additives were examined to improve the performance of ultra batteries. Physical properties of the prepared nano-Pb/AC composites were analyzed using FE-SEM, TEM, XPS and BET. The electrochemical performances of ultra batteries were performed by cycle, rate performance and impedance tests. The cycling performance of nano-Pb/AC (Pb : 9 wt%) coated ultra battery increased by 150% with respect to the lead acid one, and the discharge specific capacity increased by 119-122% for 1-5 C rate tests. As a result of the impedance test, it was confirmed that the internal resistance decreased as the nano lead content increased. The cycle performance of the ultra battery containing 0.45 vol% electrolyte additives showed 140% longer than that of no electrolyte additives.
Keywords:ultra battery;nano-Pb/AC;electrolyte additive;anode;lead-acid battery
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