Chemistry, asked by Anonymous, 1 year ago

how can the life of a Daniell cell be increased when all the other things are equal and why

Answers

Answered by vishagh

DANIEL CELL:
Daniel cell was first made using a elechemical reaction between ions of Zn-Cu.But later it was found that because of Cu²⁺ crossover induced self-discharge and un-rechargeable characteristic.

DEVELOPMENT:
Hence the cell was rebuilt using a ceramic Li-ion exchange film to separate Cu and Zn electrodes for preventing Cu²⁺ crossover between two electrodes. Li ions in the cathodic room diffuse to the anodic room through the LATSP ceramic film to balance the charges. Simultaneously, electrons are transferred from Cu cathode to Zn anode through the outer circuit. Discharge reverses the charge process, and is similar with conventional Daniell cell.

*LATSP= Li1+x+yAlxTi2-xSiyP3-yO12 it is a super-ionic conductor)
EFFECT:
Hence the battery was made highly efficient ,renewable, reusable, low toxicity and environmentally friendly.

EQUATION:
primitive: anode:Zn→Zn²⁺+2e⁻
cathode:Cu²⁺+2e⁻→Cu

Modern: overall reaction:[Cu+2LiNO₃]+Zn(NO₃)⇆Cu(NO₃)₂+[2LiNO₃+Zn]

vishagh: in the development part ...

vishagh: by using aLi ion ceramic lfilm

vishagh: LATSP i m not sure,jst learnt it,its just a kind of film i guess

Anonymous: isn't their any natural process

vishagh: just googled and found,wait i ll edit it

vishagh: natural process may be there,but u said all other things same

Anonymous: even u have copied it from internet(google)....... and ur answer by using Li ion is wrong

Anonymous: thanks ......u tried ur best But i didn't understand

vishagh: well if u are allowed to change other things i would say:1)changing electrolyte with more conductivity

vishagh: 2)increasing the volume of electrolysis solution 3)using Li-ion as is most reducing ...thts all i can say

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