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GROUP 11

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GROUP 11

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  1. Zinc air batteries &lithium ion batteries ....................................................................................................................................................................

  2. Introduction • As the cost of batteries continue to be a roadblock towards affordable Evs, researchers have started working on exploring the various alternatives to the existing lithium-ion batteries as well, in their bid to move towards cheaper and safer options. Talking about the advantages that zinc-based batteries offer, the most important one is the improved intrinsic safety over lithium-ion batteries. Li-ion batteries are subject to combustion, whereas zinc batteries have water as an electrolyte, making them significantly safer. It is not just the zinc batteries, there are many other alternatives as well that the EV industry is exploring like the sodium-ion batteries. Sodium is not only available in abundance, but it is very easy to extract.

  3. Zinc-air battery Zn-air batteries generate electricity through the electrochemical reaction of Zn and oxygen. During discharge of the battery, Zn anode is oxidized and produces zincate and later changes to zinc oxide whilst, at the cathode, oxygen from the atmosphere undergoes reduction Zn-air batteries can be recharged by two approaches: electrical recharge and mechanical recharge Zn can be regenerated by various methods. Yet, the most appropriate procedure to use with Zn-air flow batteries is electrochemical regeneration or electrolysis.

  4. Lithium ion battery • The anode and cathode store the lithium. The electrolyte carries positively charged lithium ions from the anode to the cathode and vice versa through the separator. The movement of the lithium ions creates free electrons in the anode which creates a charge at the positive current collector. • While the battery is discharging and providing an electric current, the anode releases lithium ions to the cathode, generating a flow of electrons from one side to the other. When plugging in the device, the opposite happens: Lithium ions are released by the cathode and received by the anode.

  5. Advantages and disadvantages of the batteries

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