好处有以下几点：
zinc 原材料多，Material abundance & supply-chain security
Lower long-duration cost potential 跟锂电池比
Longer calendar life， 20年以上才需要换
High cycle tolerance at deep discharge， 可以反复充电而且电池损耗小
?Wide operating temperature range?
Non-flammability reduces total system cost
不足之处大概有以下几点：
Lower energy density
Lower round-trip efficiency
Slower response times
?Manufacturing complexity? （这也是为啥eose现在还是负现金流）
