Primary and rechargeable zinc–air batteries using ceramic and highly stable TiCN as an oxygen reduction reaction electrocatalyst
| Autor: | Revanasiddappa Manjunatha, V. G. Anju, Srinivasan Sampath, P. Muthu Austeria |
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| Rok vydání: | 2016 |
| Předmět: |
Battery (electricity)
Materials science Nanostructure chemistry.chemical_element 02 engineering and technology Zinc Electrolyte 010402 general chemistry Electrochemistry Electrocatalyst 01 natural sciences law.invention law General Materials Science Ceramic Renewable Energy Sustainability and the Environment Metallurgy General Chemistry 021001 nanoscience & nanotechnology Cathode 0104 chemical sciences chemistry Chemical engineering visual_art visual_art.visual_art_medium 0210 nano-technology |
| Zdroj: | Journal of Materials Chemistry A. 4:5258-5264 |
| ISSN: | 2050-7496 2050-7488 |
| DOI: | 10.1039/c6ta00377j |
| Popis: | Primary and secondary zinc-air batteries based on ceramic, stable, one dimensional titanium carbonitride (TiCN) nanostructures are reported. The optimized titanium carbonitride composition by density functional theory reveals their good activity towards the oxygen reduction reaction (ORR). Electrochemical measurements show their superior performance for the ORR in alkaline media coupled with favourable kinetics. The nanostructured TiCN lends itself amenable to be used as an air cathode material in primary and rechargeable zinc-air batteries. The battery performance and cyclability are found to be good. Further, we have demonstrated a gel-based electrolyte for rechargeable zinc-air batteries based on a TiCN cathode under ambient, atmospheric conditions without any oxygen supply from a cylinder. The present cell can work at current densities of 10-20 mA cm(2) (app. 10 000 mA g(-1) of TiCN) for several hours (63 h in the case of 10 mA cm(-2)) with a charge retention of 98%. The low cost, noble metal-free, mechanically stable and corrosion resistant TiCN is a very good alternative to Pt for metal-air battery chemistry. |
| Databáze: | OpenAIRE |
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