南昌大学最近研发出一种新型纳米锂电池,已跻身国内领先地位。以

南昌大学最近研发出一种新型纳米锂电池,已跻身国内领先地位。以下是某种锂离子电池反应:

C6Li+Li1-xMO2C6Li1-x+LiMO2(C6Li表示锂原子嵌入石墨形成的复合材料,LiMO2表示含锂的过渡金属氧化物)

回答:

(1)锂电池放电时的负极反应为:C6Li-xe-====C6Li1-x+xLi+,则正极反应为:_____________。

(2)电池放电时若转移1 mol e-,则消耗负极材料_____________g。

答案

(1)Li1-xMO2+xLi++xe-====LiMO2

(2)

解析:此题以新型电池为载体考查了原电池电极反应方程式的书写,题目中电池材料物质陌生,分子式中出现了字母x,增加了一些难度,解题时只要抓住原电池正负电极反应得失电子守恒,仿照题目给定的负极反应,结合总反应方程式即可以写出正极反应:Li1-xMO2+xLi++xe-====LiMO2。结合负极反应,简单计算可得出放电时转移1 mol电子,消耗的负极材料的质量为

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