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小腳板 發問於 科學及數學化學 · 1 十年前

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

更新:

有冇d咩例子...or解釋

想詳盡d!!

thx

3 個解答

評分
  • 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"

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  • 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:
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  • 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
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