A highly efficient and stable platinum film deposited <i>via</i> a mixed metal-imidazole casting method as a benchmark cathode for electrocatalytic hydrogen evolution
A highly efficient and stable platinum film deposited <i>via</i> a mixed metal-imidazole casting method as a benchmark cathode for electrocatalytic hydrogen evolution
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通过混合金属-咪唑铸造方法沉积的高效稳定的铂薄膜作为电催化析氢的基准阴极
DOI：
10.1039/d2se00803c
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Yagi Masayuki
中科院分区：
文献类型：
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作者：
Zahran Zaki N.;Mohamed Eman A.;Katsuki Tomohiro;Tsubonouchi Yuta;Chandra Debraj;Hoshino Norihisa;Yagi Masayuki
铂基材料由于其与氢原子的最佳结合能力而被用作水析氢反应（HER）的高效催化剂。以含H2PtCl6的前驱体溶液为原料，在甲醇/1-甲基咪唑（MeIm）的混合溶剂（3:1）中，采用可扩展的混合金属-咪唑铸造（MiMIC）法制备了铂（Pt(w-MeIm)）在玻碳（GC）衬底上的刚性粘附膜。由于Pt（w-MeIm）薄膜的Pt纳米粒子紧密致密且相互连接良好，与不含MeIm的前驱体溶液沉积的铂（Pt(w/o-MeIm)）薄膜相比，Pt（w-MeIm）薄膜表现出更高效、更稳定的HER性能。Pt（w-MeIm）电极在电流密度为10 mA cm−2时的过电位η为60 mV， Tafel斜率为62 mV dec−1，在1.0 M KOH溶液中，在100 mV时的质量活度为0.33 a cm−2 mgPt−1，明显优于市售的Pt负载碳（Pt/C）和Pt板的普通Pt基电极。Pt（w-MeIm）电极作为一种新的HER基准阴极备受关注。
Platinum-based materials are utilized as efficient catalysts for the hydrogen evolution reaction (HER) from water due to their optimal binding ability with hydrogen atoms. A platinum (Pt(w-MeIm)) film adhering rigidly on a glassy carbon (GC) substrate was prepared by a facile and scalable technique of a mixed metal-imidazole casting (MiMIC) method from a precursor solution containing H2PtCl6 in a mixed solvent of methanol/1-methyimidazole (MeIm) (3 : 1). The Pt(w-MeIm) film demonstrated a more efficient and stable HER performance compared with a platinum (Pt(w/o-MeIm)) film deposited from the precursor solution without MeIm due to closely-compacted and well-interconnected Pt nanoparticles for the Pt(w-MeIm) film. The Pt(w-MeIm) electrode provided an overpotential (η10) = 60 mV at a current density of 10 mA cm−2, Tafel slope = 62 mV dec−1 and a mass activity of 0.33 A cm−2 mgPt−1 at 100 mV in 1.0 M KOH solution, which are remarkably superior to those of the common Pt-based electrodes of commercially available Pt-loaded carbon (Pt/C) and the Pt plate. The Pt(w-MeIm) electrode is of keen interest as a new benchmark cathode for the HER.