• Title/Summary/Keyword: Znic Air Battery

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Size Effects of the Catalyst on Characteristics of Zn/Air Batteries (MnO2입자 크기에 따른 아연공기전지의 특성연구)

  • 김지훈;엄승욱;문성인;윤문수;김주용;박정식;박정후
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.16 no.12
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    • pp.1150-1154
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    • 2003
  • The voltage profile during discharge of the zinc air battery has very flat pattern until reach to end of discharge voltage. But, when zinc air battery is discharged by high current, the discharge voltage and energy becomes low. Therefore, we focused on effects of catalyst size to solve this problems by increasing active sites of oxygen reduction reaction. The size of catalyst was reduced from 27 to l${\mu}{\textrm}{m}$ and we examined average discharge voltage, capacity, energy, resistance and characteristics during GSM pulse discharge of zinc air battery with change of current density. And we also measured porosity of the cathode according to the ASTM. So we have got improvement of average discharge voltage and energy when catalyst was minimized and we have got optimum size of catalyst at 5${\mu}{\textrm}{m}$.

Size Effects of the Catalyst on Characteristics of Zn/Air Batteries ($MnO_2$입자 크기에 따른 아연공기전지의 특성연구)

  • Kim, Jee-Hoon;Eom, Seung-Wook;Moon, Seong-In;Yun, Mun-Soo;Kim, Ju-Yong;Yug, Gyeong-Chang;Park, Jeong-Hoo
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2002.07b
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    • pp.1129-1131
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    • 2002
  • Zinc Air battery obtain their energy density advantage over the other batteries by utilizing ambient oxygen as the cathode materials, and reusing cathode as recycled form. And specific capacity of zinc powder is as high as 820mAh/g. When Zinc Air battery discharged by low rate current discharge voltage profile has very flat pattern until end of voltage. But, when Zinc Air battery discharged by high rate current discharge voltage and capacity become lower. Therefore, we focused on effects of catalyst size in cathode. So we examined performance of zinc air batteries, average discharge voltage, capacity, energy, resistance. And we also obtained resistance by the GSM pulse discharge. So we have got optimum size of catalyst for Zinc Air battery.

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