Electrochemistry



  • 0_1566493965682_IMG_20190822_223633.jpg How on size???



  • @ankita-maurya

    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]



  • @yash-kapoor can you explain in a simple way please....


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