Carbon supported NiRu nanoparticles as effective hydrogen evolution catalysts for anion exchange membrane water electrolyzers. (1st October 2022)

• Record Type: Journal Article
• Authors: Ruck, S; Körner, A; Hutzler, A; Bierling, M; Gonzalez, J; Qu, W; Bock, C; Thiele, S; Peach, R; Pham, C V
• Is Part Of: JPhys energy. Volume 4:Number 4(2022)
• Publication Date: 2022-10-01
• Subjects: nickel -- ruthenium -- carbon supported -- catalyst -- HER -- anion exchange membrane -- electrolysis; Power resources -- Research -- Periodicals; Power resources -- Periodicals; 333.79
• DOI: 10.1088/2515-7655/ac95cd
• Languages: English
• ISSNs: 2515-7655

Abstract

Abstract: Establishing anion exchange membrane water electrolysis (AEMWE) as a new technology for efficient hydrogen production requires cost-effective and high-performance catalyst materials. Here, we report the synthesis and comprehensive characterization of carbon supported NiRu alloy nanoparticles as a cost-effective hydrogen evolution reaction catalyst for AEMWEs. Different NiRu catalysts were synthesized using a facile and scalable impregnation method. Half-cell results showed the 'NiRu' catalyst with ca. 10 wt.% Ru to exhibit an increased noble metal mass activity and slightly decreased Tafel slope compared to a commercial Pt/C catalyst with 60 wt.% Pt. Further, we report the application of NiRu/C as a cathodic catalyst in AEMWE full cell for the first time. In full cell tests, the synthesized catalysts exhibit 2 A cm −2 at 1.95 V with a low loading of 0.1 mgPGM cm −2 at the cathode.