Facile Microwave Synthesis of Kilogram‐Scale Electrocatalysts with Nanocarbons Bridged Cobalt Active Sites for Enhanced Oxygen Electrocatalysis DOI
Junfeng Huang, Xiaoxue Xu, Yusheng Yan

et al.

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 30, 2025

Abstract Oxygen reductions and evolution reactions (ORR/OER) are pivotal electrochemical processes in fuel cells metal‐air batteries, yet the rapid, large‐scale production of efficient ORR/OER electrocatalysts remains challenging. Herein, a groundbreaking microwave‐synthesis strategy is presented that enables rapid facile preparation kilogram‐scale electrocatalysts. The unique microwave irradiation generates instantaneous thermal energy, facilitating formation nano‐carbon bridges interconnect high‐density active sites comprising cobalt single atoms nanoparticles. This innovative architectural configuration significantly enhances kinetics electron/mass transfer maximizing accessibility sites. optimized carbon‐bridged catalyst (CBCo‐800) demonstrates commendable half‐wave potential ( E 1/2 ) 0.86 V versus RHE minimal overpotential difference (Δ 0.696 V. Furthermore, lab‐assembled zinc‐air battery utilizing CBCo‐800 achieved great specific capacity 794 mAh g −1 sustained over 650 h, outperforming commercial Pt/C RuO 2 catalysts. Density functional theory (DFT) calculations elucidate nanocarbon bridge between dual‐active boosts oxygen activation optimizes adsorption/desorption dynamics *OH/*OOH intermediates, thereby lowering energy barriers for ORR/OER. study offers solution producing site materials, also establishes robust platform mass high‐performance

Language: Английский

Facile Microwave Synthesis of Kilogram‐Scale Electrocatalysts with Nanocarbons Bridged Cobalt Active Sites for Enhanced Oxygen Electrocatalysis DOI
Junfeng Huang, Xiaoxue Xu, Yusheng Yan

et al.

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 30, 2025

Abstract Oxygen reductions and evolution reactions (ORR/OER) are pivotal electrochemical processes in fuel cells metal‐air batteries, yet the rapid, large‐scale production of efficient ORR/OER electrocatalysts remains challenging. Herein, a groundbreaking microwave‐synthesis strategy is presented that enables rapid facile preparation kilogram‐scale electrocatalysts. The unique microwave irradiation generates instantaneous thermal energy, facilitating formation nano‐carbon bridges interconnect high‐density active sites comprising cobalt single atoms nanoparticles. This innovative architectural configuration significantly enhances kinetics electron/mass transfer maximizing accessibility sites. optimized carbon‐bridged catalyst (CBCo‐800) demonstrates commendable half‐wave potential ( E 1/2 ) 0.86 V versus RHE minimal overpotential difference (Δ 0.696 V. Furthermore, lab‐assembled zinc‐air battery utilizing CBCo‐800 achieved great specific capacity 794 mAh g −1 sustained over 650 h, outperforming commercial Pt/C RuO 2 catalysts. Density functional theory (DFT) calculations elucidate nanocarbon bridge between dual‐active boosts oxygen activation optimizes adsorption/desorption dynamics *OH/*OOH intermediates, thereby lowering energy barriers for ORR/OER. study offers solution producing site materials, also establishes robust platform mass high‐performance

Language: Английский

Citations

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