Highly Tunable Syngas Product Ratios Enabled by Novel Nanoscale Hybrid Electrolytes Designed for Combined CO2 Capture and Electrochemical Conversion

• DOI: 10.1002/adfm.202210017
• Publication Date: 2023-02-01T04:17:33Z
• Authors: Tony G. Feric; Sara T. Hamilton; Byung Hee Ko; Gahyun Annie Lee; Sumit Verma; Feng Jiao; Ah‐Hyung Alissa Park
• Keywords: 13. Climate action; 02 engineering and technology; 0210 nano-technology; 7. Clean energy; 3. Good health

Abstract Coupling renewable energy with the electrochemical conversion of CO 2 to chemicals and fuels has been proposed as a strategy achieve new circular carbon economy help mitigate effects anthropogenic emissions. Liquid‐like Nanoparticle Organic Hybrid Materials (NOHMs) are composed polymers tethered nanoparticles previously explored capture materials electrolyte additives. In this study, two types aqueous NOHM‐based electrolytes prepared explore effect binding (i.e., chemisorption versus physisorption) on electroreduction over silver nanoparticle catalyst for syngas production. Poly(ethylenimine) (PEI) Jeffamine M2070 (HPE) ionically SiO form amine‐containing NOHM‐I‐PEI ether‐containing NOHM‐I‐HPE, respectively. At less negative cathode potentials, PEI NOHM‐I‐PEI‐based produce at higher rates than 0.1 molal. KHCO 3 due favorable catalyst‐electrolyte interactions. Whereas more H production is favored because carbamate inactivity. Conversely, HPE NOHM‐I‐HPE‐based display poor reduction performance potentials. their approached that , highlighting how polymer functional groups NOHMs can be strategically selected value‐added products from highly tunable compositions.