Partially oxidized ruthenium aerogel as highly active bifunctional electrocatalyst for overall water splitting in both alkaline and acidic media
Yan, Su 1Liao, Wenying 2Zhong, Mengxiao 1Li, Weimo 1Wang, Ce 1Pinna, Nicola 3Chen, Wei 2Lu, Xiaofeng1
扫码查看
点击上方二维码区域，可以放大扫码查看
作者信息
1. Jilin Univ
2. Fujian Normal Univ
3. Xiamen Univ
折叠
Abstract
In this study, a general strategy is demonstrated to prepare a partially oxidized three-dimensional (3D) porous ruthenium (Ru) aerogel with distinct porous architecture and unique Ru/RuO2 interface. The optimized partially oxidized Ru aerogel catalyst exhibits an exceptional HER performance, which is even superior to the benchmark Pt/C catalyst, and an outstanding OER efficiency that is better than commercial RuO2 in both alkaline and acidic solutions. Furthermore, a two-electrode configuration based on the partially oxidized Ru aerogel as both anode and cathode for the overall water splitting exhibits an ultra-low working voltage of 1.467 V in 1 M KOH and 1.468 V in 0.5 M H2SO4 at 10 mA cm(-2) as well as a satisfactory long-term stability, outperforming the device composed of Pt/C||RuO2 catalysts. This research opens up a new avenue to develop highly efficient 3D porous aerogel electrocatalysts toward overall water splitting applications.
Key words
Ruthenium/Aerogel/Partial oxidation/Electrocatalysis/Overall water splitting/OXYGEN EVOLUTION REACTION/METALLIC AEROGELS/HIGH-PERFORMANCE/HYDROGEN/NANOPARTICLES/GRAPHENE/REDUCTION/CATALYST/OXIDE/PH
NSTL
Elsevier