Emails (Others): Zinc Air Battery by IIT

Tue 07-06-2022 12:02

To : aravindkumar@iitm.ac.in; kongaraakhil1@gmail.com

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Shri Aravind Kumar Chandiran

( Asst Prof. Dept of Chemical engg / IIT – Madras / Ph : 91-44-22,57,41,54 )

Shri Akhil Kongara ( Research Scholar , IIT Madras )

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Dear Friends,

Just read about your development of Zinc-Air Battery , through following news reports :

IIT Madras researchers develop mechanically-rechargeable zinc-air batteries

IIT Madras Researchers Develop Next-Generation Battery Technology That Could Revolutionise Electric Mobility

IIT-M Researchers Develop Made-in-India EV Batteries 3 Times Cheaper Than Li-ion Cells

Apart from other numerous advantages of Zn-Air battery, what excited me most was the intriguing reference to “ Mechanically Rechargeable “ feature

How exactly ?

Like a stationary Bicycle ( on a stand )- and connected to a Electric Generator - where a person can just keep “ pedalling “ to produce an electric current, which, in turn, will charge the “ Zn Cassette “ ?

If yes, then you may be heralding a REVOLUTION of sorts !

Some 30 years ago, when Sam Pitroda introduced the concept of PCO ( Public Call Office ) – for millions of Indians who could not get / afford a telephone Landline at their homes – a MILLION PCOS sprung up on footpaths of every town in the country

If Zn-Air Cassette can be recharged by a “ pedalling bicycle “ then I imagine a million unemployed youth can set themselves up as SELF EMPLOYED , and roam the streets of India, shouting :

“ BATTERY RECHARGE WALA “ !

I anxiously await your clarification / comments on what I envisage

With regards,

Hemen Parekh

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Details of zinc-air battery

akhil kongara <kongaraakhil1@gmail.com>

Tue 07-06-2022 15:42

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Dear Mr. Hemen,

It was great talking to you over phone. I am attaching the details of our zinc-air battery below for your reference.

Thanks and regards,

Akhil

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Details of zinc-air battery

Mechanically rechargeable zinc-air battery specifications

Total energy of battery built in our lab: 2.6 kWh

Total power: 40 W continuous (Work in progress to improve power)

Cell level specific energy: 400 Wh/kg

Mechanical recharging time: 5 minutes

Safety: Extremely safe. No scope for fire accidents

Lab scale cost: $ 100 per kWh

Lifetime: Need rigorous testing for estimation. Work in progress

Process of mechanical recharging: Zinc anodes will be available as plates which will be manually inserted in the battery. During discharge, zinc will be converted to zinc oxide. Upon completion of discharge, zinc oxide will be recovered from the battery and fresh zinc plates will be manually inserted. This process will take a maximum of 5 minutes to mechanically recharge an electric 2-wheeler battery.

Note: We have developed our own recharging station where we convert zinc oxide collected from battery back to zinc plates using renewable energy. This recharging stations can be installed anywhere like petrol bunks and even layman can operate the recharging station with some basic training. We envisage that the public find the business of installing recharging stations and providing zinc plates (fuel) to EVs to be economical which will be the key aspect for wide adoption of zinc-air technology.

We have future plans to scale-up the battery to 100 kWh by 2024.

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RE: Details of zinc-air battery

Wed 08-06-2022 11:19

akhil kongara <kongaraakhil1@gmail.com>

CC : aravindkumar@iitm.ac.in

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Akhil,

I too enjoyed our telephonic chat

Thanks for the details of your zinc air battery . Can I incorporate the same in my future blog ?

As far as other related topics ( which I mentioned during our chat ), following are the links to some of my blogs ( each sent as e-mail to our Cabinet Ministers / State Chief Minister / NITI Aayog etc ) :

( A ) Fast Charging Battery Technology ( StoresDot )

https://myblogepage.blogspot.com/2022/03/congratulations-bhavish-aggarwal.html

https://myblogepage.blogspot.com/2018/02/holy-grail-for-electric-vehicles.html

( B ) 1000 times powerful PV solar panels

https://myblogepage.blogspot.com/2022/02/procuring-technology-for-next-gen-solar.html

https://emailothers.blogspot.com/2021/09/08-09-2021-1209-to-cc-hcprecruitguru.html#.YqAtYahByUl

( C ) Printed Solar Films ( Kardinia Energy )

https://myblogepage.blogspot.com/2022/02/procuring-technology-for-printed-solar.html

https://myblogepage.blogspot.com/2022/01/topmost-candidate-for-pli.html

( D ) Iron Air Battery ( FORM )

https://myblogepage.blogspot.com/2022/04/grid-storage-battery-4-years-and.html

( E ) Sodium Ion Battery