為發展電子可充電式鋅空氣電池之鋅極，本實驗針對鋅空氣電池鋅電極電解液的一些基本性質，如鋅離子在KOH溶液中的飽和濃度、鋅在KOH溶液中腐蝕速率、與電解液的蒸汽壓進行較完整的數據測量。在考慮二次電池使用情況下，經實驗測試以濃度為4 M KOH ＋ 2.5 M KF 之電解液效果較佳，因其對氧化鋅溶解度低，可減少電極變形、蒸汽壓與環境接近、導電度高、造成電極極化現象小，綜合性能較30wt%KOH 更為優良。
本實驗並進行鋅電極的製程相關研究，以求得機械強度高、電解液濕潤性好、導電均勻的電極、自腐蝕輕微的電極。更進一步，建立整個鋅空氣電池系統做電極電性測試，且嘗試加入添加劑以改善電極再充電性能。所製造之電極已可以在一次電池使用良好。然而作為二次電池電極使用時雖添加28 wt%氫氧化鈣以減少電極變形，卻還不是十分理想。另一方面實驗中以毒性低的二氧化錫為添加劑，經實驗其對提高活性材料使用率有幫助，然而卻加速電極腐蝕，不過錫金屬具有較高氫氣超電位，若嘗試其他錫化合物作為前驅物再加以還原成金屬，或加入錫金屬或許效果會更好，這方面還有待繼續研究。

To develop the zinc electrode for rechargeable zinc-air batteries, a series of fundamental study were done in this research, e.g the saturated concentration of zincate ion in the KOH solution, the corrosion rate of zinc in KOH solution, and the vapor pressure of electrolyte. Results showed that electrolyte containing 4 M KOH＋2.5 M KF was the best composition, for the sake of low ZnO solubility、high conductivity、similar vapor pressure to environment and low polarization to the electrode. The overall performance of the above electrolyte was batter than 30wt% KOH solution.
Manufacturing of zinc electrode was also investigated there , in order to obtain a set of ideal processing conditions. Furthermore, we then built a zinc-air battery system to test electrode performance. The effects of some additives to the electrode were studied for improvement. The electrode we made can be used satisfactorily in primary zinc-air battery, but not good enough for secondary batteries. The addition of 28% Ca(OH)2 did not prevent the shape change problem of electrode. When SnO2 was added, it improved the electrode capacity to some extent, but at the expense of increased rate of corrosion. Future work are need for additional improvement.

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