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- W3188849157 abstract "Developing highly efficient carbon aerogels (CA) electrocatalysts based on transition metal-nitrogen sites is critical for the CO2 electroreduction reaction (CO2RR). However, simultaneously achieving a high current density and high Faradaic efficiency (FE) still remains a big challenge. Herein, a series of unique 3D hierarchical cross-linked nanostructured CA with metal-nitrogen sites (MN, M = Ni, Fe, Co, Mn, Cu) is developed for efficient CO2RR. An optimal CA/N-Ni aerogel, featured with unique hierarchical porous structure and highly exposed M-N sites, exhibits an unusual CO2RR activity with a CO FE of 98% at −0.8 V. Notably, an industrial current density of 300 mA cm−2 with a high FE of 91% is achieved on CA/N-Ni aerogel in a flow-cell reactor, which outperforms almost all previously reported M-N/carbon based catalysts. The CO2RR activity of different CA/N-M aerogels can be arranged as Ni, Fe, Co, Mn, and Cu from high to low. In situ spectroelectrochemistry analyses validate that the rate-determining step in the CO2RR is the formation of *COOH intermediate. A ZnCO2 battery is further assembled with CA/N-Ni as the cathode, which shows a maximum power density of 0.5 mW cm−2 and a superior rechargeable stability." @default.
- W3188849157 created "2021-08-16" @default.
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- W3188849157 date "2021-08-08" @default.
- W3188849157 modified "2023-10-15" @default.
- W3188849157 title "Hierarchical Cross‐Linked Carbon Aerogels with Transition Metal‐Nitrogen Sites for Highly Efficient Industrial‐Level CO <sub>2</sub> Electroreduction" @default.
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- W3188849157 doi "https://doi.org/10.1002/adfm.202104377" @default.
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