Growing energy demand leads to thriving dependency on fossil fuels that subsequently causes unavoidable environmental pollution and future energy crisis. To mitigate these issues researchers around the globe are running behind the development of clean and green energy sources. Oxygen evolution reaction (OER) is one of the reliable and green strategies to produce chemical fuel but the sluggish kinetics of OER through the four-electron transportation pathway hinders the applicability of OER. An electrocatalyst needs to be developed that can reduce the overpotential and make the kinetics of OER even smoother. Cobalt pyrophosphate along with partially graphitized carbon hybrid (GC@CPP) turned out to be a robust, durable, and efficient electrocatalyst for OER. The hybrid material provides an overpotential of 165 mV along with a Tafel slope of 41 mV/dec towards OER. Along with the energy conversion (OER), the electrochemical energy storage performance of the GC@CPP hybrid was studied under alkaline conditions. The as-synthesized material delivers a specific capacitance of 900 F/g, the energy density of 31.25 W h kg-1 and power density of 21 kW kg-1along with its cycling stability (10,000 GCD cycles) conveys that the material for future energy sustainability.

Cobalt pyrophosphate (Co2P2O7) derived from an open-framework cobalt phosphite: a durable electroactive material for electrochemical energy conversion and storage application

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27th CRSI National Symposium in Chemistry

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