CNT‐Supported RuNi Composites Enable High Round‐Trip Efficiency in Regenerative Fuel Cells DOI Open Access
Chunfeng Li, Danning Li, Lubing Li

et al.

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

Published: March 20, 2025

Abstract Regenerative fuel cells hold significant potential for efficient, large‐scale energy storage by reversibly converting electrical into hydrogen and vice versa, making them essential leveraging intermittent renewable sources. However, their practical implementation is hindered the unsatisfactory efficiency. Addressing this challenge requires development of cost‐effective electrocatalysts. In study, a carbon nanotube (CNT)‐supported RuNi composite with low Ru loading developed as an efficient stable catalyst alkaline oxygen electrocatalysis, including evolution, oxidation, reduction reaction. Furthermore, regenerative cell using assembled evaluated under relevant conditions. As anticipated, system exhibits outstanding performance in both electrolyzer modes. Specifically, it achieves voltage 1.64 V to achieve current density 1 A cm − 2 mode delivers high output 0.52 at same mode, resulting round‐trip efficiency (RTE) 31.6% without further optimization. The multifunctionality, activity, impressive RTE resulted composites underscore its single cells.

Language: Английский

CNT‐Supported RuNi Composites Enable High Round‐Trip Efficiency in Regenerative Fuel Cells DOI Open Access
Chunfeng Li, Danning Li, Lubing Li

et al.

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

Published: March 20, 2025

Abstract Regenerative fuel cells hold significant potential for efficient, large‐scale energy storage by reversibly converting electrical into hydrogen and vice versa, making them essential leveraging intermittent renewable sources. However, their practical implementation is hindered the unsatisfactory efficiency. Addressing this challenge requires development of cost‐effective electrocatalysts. In study, a carbon nanotube (CNT)‐supported RuNi composite with low Ru loading developed as an efficient stable catalyst alkaline oxygen electrocatalysis, including evolution, oxidation, reduction reaction. Furthermore, regenerative cell using assembled evaluated under relevant conditions. As anticipated, system exhibits outstanding performance in both electrolyzer modes. Specifically, it achieves voltage 1.64 V to achieve current density 1 A cm − 2 mode delivers high output 0.52 at same mode, resulting round‐trip efficiency (RTE) 31.6% without further optimization. The multifunctionality, activity, impressive RTE resulted composites underscore its single cells.

Language: Английский

Citations

0