Oxygen from the air took the place of the cobalt oxide.

空气中的氧气代替了钴氧化物。

One of the electrodes, the cathode, is made of lithium cobalt oxide;

电极的负极由锂钴氧化物制成；

The new material is a significant improvement over lithium cobalt oxide.

新材料对锂钴氧化物是显著的改进。

Its advantages are high extraction rate and high purity of cobalt oxide.

采用本方法提取钴化物，提取率高且提出的钴氧化物纯度也高。

Some wires, made of cobalt oxide and gold, become the negative poles of the battery.

一些导线由金和氧化钴制成，作为电池的负极。