鉛碳電極製備及其電化學性質測量

傳統鉛酸電池在多次的快速充放電下會產生不可逆之硫酸鉛，導致其電池壽命終止，由於孔隙碳具有電雙層效應，故本實驗開發鉛碳電極製作技術，藉由結合氧化熱處理與機械壓合方式，將鉛液注入碳布孔隙結構之中，並在鉛—碳布氧化接面上形成高化學穩定度之鉛—碳布接面。以SEM觀測出鉛電極及鉛碳電極在電化學循環伏安(CV)後之鉛形貌，由圖中明顯觀測出鉛碳電極在CV後所形成之硫酸鉛晶粒較小。由XRD繞射分別分析鉛電極及鉛碳電極並分析CV後之結構，觀測出鉛—碳電極在CV後無明顯硫酸鉛峰值產生。藉由電化學循環伏安比較鉛電極及鉛碳電極之電容及穩定性，由曲線圖說明鉛—碳電極電容效應高且化學穩定度較佳，亦即表示其蓄電量穩定及使用次數上明顯增加。

關鍵字

鉛—碳電極；碳布；循環伏安

並列摘要

After several times of quickly charge-discharge process, those conventional lead-acid batteries failed due to the irreversible Lead Sulfate appeared on the surface of electrode. The porous carbon owns the electric double layer property and could be a electric supercapacitor. This study aims to develop the technique for the manufacturing of highly stable lead-carbon electrode. The lead liquid was injected into the porous structure of carbon clothe and then, lead-carbon bonded and formed a highly stable lead-carbon interface by combining oxidation heat treatment and mechanical bonding process. The SEM and XRD observations show that lead-carbon electrode and Pb electrode after cyclic voltage (CV) test precipitate Lead Sulfate on surface, and the lead-carbon electrode has fine and amorphous Lead Sulfate, the Pb electrode has coarse Lead Sulfate crystalline. To compare the CV results, the lead-carbon electrode has higher electric capacity and better chemical stability than the Pb electrode, and should be used in storage batteries.

並列關鍵字

lead-carbon electrode ； carbon clothe ； cyclic voltage

參考文獻

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國際替代計量

鉛碳電極製備及其電化學性質測量

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