急...advantages and disadantages of chemcial cell??(20點!!)
advantages and disadantages of below items:
1.zinc-carbon dry cell
2.alkaline-manganese dry cell
3.silver oxide dry cell
4.mercury dry cell
5.lead-acid accumulator
6.nickel-cadmium cell
有冇d咩例子...or解釋
想詳盡d!!
thx
3 個解答
- 1 十年前最愛解答
a=advantage
d=disadvantage
1.
a/ cheap
d/ service life of the battery is short, with a shelf life of around 1.5 years
2.
a/ can be disposed of in the regular trash
d/ prone to leaking potassium hydroxide, a caustic agent that can cause respiratory, eye and skin irritation
3.
a/ have a long life and very high energy/weight ratio
d/ expensive, due to high price of silver
4.
a/ provide constant voltage at low discharge currents
d/ mercury is toxic
5.
a/ provide high current, rechargeable
d/ improper disposal will damage environment
6.
a/ rechargeable
b/ suffer from a so-called "memory effect"
- 1 十年前
1.碳鋅電池最平,穩定,缺點是壽命短
2.鹼性電池壽命較長,穩定,但比較貴
3.不明
4.汞電池體積最小最輕,但汞有毒,使用時要小心
5.不明
6.充電池是唯一可充電的電池,但不能與一般廢物一同處理,否則對環境構成極大污染
資料來源: 我 - 1 十年前
1.cheap
2.longer time to use
3.common use-----watch,lasers........
4.& 5.(I don't know)
6.can rechargable
資料來源: my mind