Molecular Catalyst Enables CO2 Electroreduction at 650 mA/cm2 CO Partial Current Density
Uloženo v:
| Název: | Molecular Catalyst Enables CO2 Electroreduction at 650 mA/cm2 CO Partial Current Density |
|---|---|
| Autoři: | Liu, Chengyu, Joulié, Dorian, Shao, Junming, Giri, Bishnubasu, Gebru, Medhanie Gebremedhin, Isci, Umit, Robert, Marc |
| Přispěvatelé: | Bonin, Julien |
| Zdroj: | ACS Energy Letters. :4957-4961 |
| Informace o vydavateli: | American Chemical Society (ACS), 2025. |
| Rok vydání: | 2025 |
| Témata: | [CHIM] Chemical Sciences |
| Popis: | The electrochemical reduction of CO2 to CO using renewable electricity offers a compelling pathway for greenhouse gas recycling. The two-electron, two-proton process is particularly attractive due to its operational simplicity and scalability, with copper-and silver-based nanomaterials being the most widely studied catalysts as the field approaches industrial maturity. However, achieving the necessary efficiency and stability for practical application remains a significant challenge. Recently, molecular catalysts immobilized on conductive surfaces with carbon-based inks have emerged as highly tunable hybrid systems capable of remarkable selectivity. In this work, we report that a straightforward cobalt phthalocyanine complex, simply modified with a single trimethylammonium group, delivers outstanding CO2-to-CO conversion rates and selectivity-reaching a Faradaic efficiency of 93% at a total current density of 700 mA/cm 2 (jCO 650 mA/cm 2 ) at neutral pH. Notably, CO selectivity above 90% was sustained for over 42 hours at 150 mA/cm 2 , illustrating the potential of simply designed molecular catalysts for large scale applications. |
| Druh dokumentu: | Article |
| Popis souboru: | application/pdf |
| Jazyk: | English |
| ISSN: | 2380-8195 |
| DOI: | 10.1021/acsenergylett.5c02397 |
| Přístupová URL adresa: | https://hal.science/hal-05267245v1 https://doi.org/10.1021/acsenergylett.5c02397 https://hal.science/hal-05267245v1/document |
| Rights: | STM Policy #29 CC BY |
| Přístupové číslo: | edsair.doi.dedup.....409f8b333e8c8202dbbef649251c394b |
| Databáze: | OpenAIRE |
Nájsť tento článok vo Web of Science | Abstrakt: | The electrochemical reduction of CO2 to CO using renewable electricity offers a compelling pathway for greenhouse gas recycling. The two-electron, two-proton process is particularly attractive due to its operational simplicity and scalability, with copper-and silver-based nanomaterials being the most widely studied catalysts as the field approaches industrial maturity. However, achieving the necessary efficiency and stability for practical application remains a significant challenge. Recently, molecular catalysts immobilized on conductive surfaces with carbon-based inks have emerged as highly tunable hybrid systems capable of remarkable selectivity. In this work, we report that a straightforward cobalt phthalocyanine complex, simply modified with a single trimethylammonium group, delivers outstanding CO2-to-CO conversion rates and selectivity-reaching a Faradaic efficiency of 93% at a total current density of 700 mA/cm 2 (jCO 650 mA/cm 2 ) at neutral pH. Notably, CO selectivity above 90% was sustained for over 42 hours at 150 mA/cm 2 , illustrating the potential of simply designed molecular catalysts for large scale applications. |
|---|---|
| ISSN: | 23808195 |
| DOI: | 10.1021/acsenergylett.5c02397 |