摘要
用循环伏安测温（ＣＶＴ）热电化学方法首次研究了Ｃｕ＿２Ｓ阳极溶解过程；实测得Ｃｕ＿２Ｓ阳极过程的熵变△ｒＳ＿ｍ与根据热力学数据计算所得到的电极反应Ｃｕ＿２Ｓ＝ＣｕＳ＋Ｃｕ￣（２＋）＋２ｅ的熵变值相符；实验的塔费尔（Ｔａｆｅｌ）斜率ｂ与按迟缓放电机理所导出的Ｔａｆｅｌ斜率ｂ的理论计算值接近。
In this paper Cyclic-Voltammo-Thermometry CVT）technique was first applied tostudying the process of Cu_2S anodic dissolution. The entropy change △rS obtained experi-mentally is in agreement with that of the following electrode reaction Cu_2S=CuS＋Cu^(2+)＋2eAnd the Tafel’s slope b obtained from CVT experiment indicates that there is the delayeddischarge reaction mechanism of Cu_2S anodic dissolution under the conditions studied.
基金
国家自然科学基金
关键词
热化学
电化学
硫化铜
thermochemistry；electrochemistry；copper sulfide
