November 28, 2022

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Cost-effective catalysts for metal-air battery

Cost-effective catalysts for metal-air battery

Cost-effective catalysts for metal-air battery

The Union Ministry of Science & Technology said that the ARCI has developed cost-effective catalysts for a metal-air battery that will help to decrease cost and increase the efficiency of metal-air batteries.

The statement issued by the Ministry said “A new non-precious metal-based bi-functional electrocatalyst (capable of catalysing two different types of reactions) can decrease cost and increase the efficiency of metal-air batteries.”

The International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), an autonomous R&D centre of the Department of Science and Technology (DST), Government of India has developed the cost-effective electrocatalyst by anchoring transition metal ions into the sulfur-doped carbon framework through carbonisation of a polymer called sPEEK (sulfonated polyether ether ketone).

With the increase in the demand for different energy sources, worldwide efforts are being made to develop different kinds of energy devices such as lithium-ion batteries, lead-acid batteries, redox flow batteries, lithium-air batteries, zinc-air batteries, sodium-ion batteries, fuel cells, and supercapacitors.

This catalyst synthesis method can be used to recycle used ionomers (polymer composed of both neutral repeating units and ionised units). It also helps to reduce voltage polarisation and higher energy efficiency.

The results received is comparable to that of conventionally used noble metal-based catalysts with metal loading of 20 per cent or higher. The strategy here is used that the ion-exchange strategy that can be positioned to the metal ions in the carbon framework homogeneously, limits the particle size and offers control on composition and size at a very low loading of transition metal.

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