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Synthesis and characterization of nano-sized calcium zincate powder and its application to Ni–Zn batteries

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Abstract

Nano-sized calcium zincate powders used as active materials for a secondary Zn electrode were prepared by a chemical co-precipitation method. The properties were studied by thermal gravimetric analysis (TGA), micro-Raman spectroscopy and nitrogen adsorption–desorption experiments. The secondary Zn electrodes using chemical co-precipitation calcium zincate powders (CP-ZnCa) and ball-milled calcium zincate powders (BM-ZnCa), were examined and compared. The electrochemical performance of the secondary Zn electrodes was systematically investigated by cyclic voltammetry and galvanostatic charge/discharge measurements. It was demonstrated that the electrochemical properties of the secondary Zn-pasted electrode using CP-ZnCa powders were greatly improved, as compared with conventional secondary ZnO electrodes. The results indicated that secondary Ni-Zn batteries using CP-ZnCa powders exhibited a better charge/discharge property and a longer life-cycle performance, compared with those based on ball-milled ZnO + Ca(OH)2 (BM-ZnCa) powders.

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Acknowledgement

Financial support from the Taiwan Power Company, Taiwan (Project No: TPC-546-4311-9401B) is gratefully acknowledged.

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Authors and Affiliations

  1. Department of Chemical Engineering, Mingchi University of Technology, Taipei Hsien, 243, Taiwan, ROC

    Chen-Chen Yang, Wen-Chen Chien & Po-Wei Chen

  2. Taiwan Power Research Institute, Taiwan Power Company, Taipei, Taiwan, ROC

    Cheng-Yeou Wu

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  1. Chen-Chen Yang
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  2. Wen-Chen Chien
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  3. Po-Wei Chen
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  4. Cheng-Yeou Wu
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Correspondence to Chen-Chen Yang.

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Yang, CC., Chien, WC., Chen, PW. et al. Synthesis and characterization of nano-sized calcium zincate powder and its application to Ni–Zn batteries. J Appl Electrochem 39, 39–44 (2009). https://doi.org/10.1007/s10800-008-9637-9

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  • DOI: https://doi.org/10.1007/s10800-008-9637-9

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