They used titanium disulfide as a cathode and metallic lithium as an anode.

它们使用二硫化态作阴极，金属锂作阳极。

Titanium disulfide is a layered material that lithium ions can move into and out of easily.

二硫化钛是一种分层材料，锂原子可以自由进出。

John knew about Stan's work with titanium disulfide cathodes and predicted that a metal oxide cathode, instead of a metal sulfide one, would enable more powerful batteries.

约翰知道斯坦利有关阴极使用二硫化钛的研究，并预测用金属氧化物代替金属硫化物作阴极会产生更强劲的电池。