A zinc-quinone battery for paired hydrogen peroxide electrosynthesis
| Autor: | Ravikumar Thimmappa, Musthafa Ottakam Thotiyl, Alagar Raja Kottaichamy, Zahid Manzoor Bhat, Mruthyunjayachari Chattanahalli Devendrachari, Sarvajith Malali Sudhakara, Mahesh Itagi, Fasiulla Khan, Harish Makri Nimbegondi Kotresh |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Battery (electricity)
02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Electrosynthesis 01 natural sciences Peroxide Combinatorial chemistry Anthraquinone 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Catalysis Biomaterials chemistry.chemical_compound Colloid and Surface Chemistry chemistry Anthraquinone process Proton-coupled electron transfer 0210 nano-technology Hydrogen peroxide |
| Zdroj: | Journal of Colloid and Interface Science. 559:324-330 |
| ISSN: | 0021-9797 |
| Popis: | Hydrogen peroxide is a commodity chemical with immense applications as an environmentally benign disinfectant for water remediation, a green oxidant for synthetic chemistry and pulp bleaching, an energy carrier molecule and a rocket propellant. It is typically synthesized by indirect batch anthraquinone process, where sequential hydrogenation and oxidation of anthraquinone molecules generates H2O2. This highly energy demanding catalytic sequence necessitates the advent of new reaction pathways with lower energy expenditure. Here we demonstrate a Zn-quinone battery for paired H2O2 electrosynthesis at the three phase boundary of its cathodic half-cell during electric power generation. The catalytic quinone half-cell of the Zn-quinone battery, mediates proton coupled electron transfer with molecular oxygen during its chemical regeneration thereby pairing peroxide electrosynthesis with electricity generation. Hydrogen peroxide synthesizing Zn-quinone battery (HPSB) demonstrated a peak power density of ~90 mW/cm2 at a peak current density of ~145 mA/cm2 while synthesizing ~230 mM of H2O2. HPSB offers immense opportunities as it distinctly couples electric power generation with peroxide electrosynthesis which in-turn transforms energy conversion in batteries truly multifunctional. |
| Databáze: | OpenAIRE |
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