Molten salt derived Mo2AlB2 with excellent HER catalytic performance. Issue 7 (3rd July 2023)

• Record Type: Journal Article
• Authors: Li, Yuqiong; Lan, Bing; Dai, Chunlong; Li, Siwei; Zhang, Fan; Lin, Zifeng
• Is Part Of: Materials research letters. Volume 11:Issue 7(2023)
• Page Start: 571
• Page End: 577
• Publication Date: 2023-07-03
• Subjects: MoAlB -- molten salt synthesis -- Mo2AlB2 -- HER; Materials science -- Research -- Periodicals; Biomedical materials -- Research -- Periodicals; Composite materials -- Research -- Periodicals; Biomedical materials -- Research; Composite materials -- Research; Materials science -- Research; Periodicals; 620.1105
• DOI: 10.1080/21663831.2023.2186807
• Languages: English
• ISSNs: 2166-3831

Abstract

Abstract : Mo2 AlB2 is a lamellar transition metal boride that is prepared by selectively etching the MoAlB MAB phase precursor. Most methods for synthesizing Mo2 AlB2 require the use of strong acids or bases and a long reaction time. In this study, we present a Lewis acid molten salt method for synthesizing the lamellar structured Mo2 AlB2 by selectively etching a layer of aluminium atoms from the MoAlB precursor. The synthesized Mo2 AlB2 shows excellent catalytic activity for hydrogen evolution reaction under alkaline conditions, with long-term stability, and a low overpotential of 145 mV and Tafel slope of 76 mV dec −1 at 10 mA cm −2 . GRAPHICAL ABSTRACT: UF0001 IMPACT STATEMENT: Mo2 AlB2 was synthesized through a novel molten salt method of etching MoAlB, resulting in exceptional HER catalytic performance in alkaline conditions.