Anion-exchange-membrane-based electrochemical synthesis of ammonia as a carrier of hydrogen energy
| Autor: | Moon-Hee Han, Jong-Hyun Park, Sang Hyun Park, Hana Yoon, Dae Sik Yun, Hyung Chul Yoon, Jong-Nam Kim, C.W. Jeong, Chung-Yul Yoo, Eun-Young Jeong |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
General Chemical Engineering Alkaline water electrolysis Inorganic chemistry chemistry.chemical_element 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Nitrogen 0104 chemical sciences Catalysis Electrochemical cell Ammonia chemistry.chemical_compound chemistry Hydrogen fuel 0210 nano-technology Faraday efficiency |
| Zdroj: | Korean Journal of Chemical Engineering. 35:1620-1625 |
| ISSN: | 1975-7220 0256-1115 |
| Popis: | With a 17.6 wt% hydrogen content, ammonia is a non-carbon-emitting, easy to store and transport, carrier of hydrogen energy. In this study, an anion-exchange-membrane-based (AEM-based) electrochemical cell was used to electrochemically synthesize ammonia from water and nitrogen under ambient conditions. The electrochemical cell was fabricated by attaching Pt/C to both sides of the AEM, and ammonia was generated by supplying nitrogen gas to the cathodic chamber of the cell. AC impedance and current-voltage (I–V) properties were analyzed in relation to the externally applied voltage, and ammonia-formation rates and faradaic efficiencies were determined. The maximum ammonia-formation rate was 1.96×10−11 mol·s−1·cm−2 at an applied voltage of 2V, with a faradaic efficiency of 0.18%. |
| Databáze: | OpenAIRE |
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