急...advantages and disadantages of chemcial cell??(20點!!)

2007-10-31 6:45 am
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
更新1:

有冇d咩例子...or解釋 想詳盡d!! thx

回答 (3)

✔ 最佳答案
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"
2007-10-31 7:40 am
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
參考: 我
2007-10-31 6:58 am
1.cheap
2.longer time to use
3.common use-----watch,lasers........
4.& 5.(I don't know)
6.can rechargable
參考: my mind


收錄日期: 2021-04-19 22:44:13
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071030000051KK04564

檢視 Wayback Machine 備份