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

Question

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:

有冇d咩例子...or解釋

想詳盡d!!

thx

Answer 1

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"

• 登入以回覆解答發佈

Answer 2

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

• 登入以回覆解答發佈

Answer 3

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

• 登入以回覆解答發佈