Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Development of Hybrid (Sb/Ca) Flooded Lead-Acid Battery for Minimizing Water Loss

감액 특성 향상을 위한 하이브리드(Sb/Ca) 액식 연축전지 개발

  • Song, Seung Yun (Sebang Global battery Co., Ltd.) ;
  • Lim, Tae Seop (Sebang Global battery Co., Ltd.) ;
  • Kim, Sung Jun (Sebang Global battery Co., Ltd.) ;
  • Jung, Yeon-Gil (Convergence Materials Science and Engineering, School of Materials Science and Engineering, Changwon National Univ.) ;
  • Yang, SeungCheol (Convergence Materials Science and Engineering, School of Materials Science and Engineering, Changwon National Univ.)
  • 송승윤 (세방전지(주)) ;
  • 임태섭 (세방전지(주)) ;
  • 김성준 (세방전지(주)) ;
  • 정연길 (창원대학교 신소재공학부 신소재융합공학전공) ;
  • 양승철 (창원대학교 신소재공학부 신소재융합공학전공)
  • Received : 2022.01.11
  • Accepted : 2022.03.11
  • Published : 2022.03.27
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Abstract

One disadvantage of deep cycle flooded lead-acid batteries is increasing water loss caused by use of (+) Pb-Sb / (-) Pb-Sb alloy grid. Water loss is generated by the emission of hydrogen gas from the (-) electrode during battery charging. In this paper, we maintain cycle life aspect through the development of hybrid flooded lead-acid batteries to which a (+) Pb-Sb / (-) Pb-Ca grid is applied and deal with the improvement of water loss. The amount of water loss compared to that of the (-) Pb-Sb grid decreased when Ca was added to the (-) Pb grid. For the (-) Pb-Ca grid, it was confirmed that the time to reach 0.0 V, at which water decomposition occurs, was increased compared to that of the (-) Pb-Sb grid at the NPV (Negative Potential Voltage). In the cycle life test conducted with the BCI (Battery Council International) standard, compared to the (+) Pb-Ca grid, the (+) Pb-Sb grid increased the life cycle of the batteries and the (+) Pb-Ca grid showed an early end of life due to PbO corrosion layer generation, as determined through SEM / EDS and Tear Down analysis. In conclusion, by addition of Sb to (+) Pb grid and Ca to (-) Pb grid, we developed a hybrid flooded lead-acid battery that meets user requirements to improve water loss characteristics and preserve cycle life characteristics.

Keywords

Acknowledgement

This research was supported by Changwon National University in 2021 ~ 2022.

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