ZrB₂-HfB₂ solid solutions as electrode materials for hydrogen reaction in acidic and basic solutions

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• 作者：Steven J. Sitler ; ^{sitl1428@vandals.uidaho.edu} ; Krishnan S. Raja ; Indrajit Charit
• 关键词：Electroceramics ; Energy storage and conversion ; Solar energy materials ; Borides ; Ceramic composites
• 刊名：Materials Letters
• 出版年：2017
• 出版时间：1 February 2017
• 年：2017
• 卷：188
• 期：Complete
• 页码：239-243
• 全文大小：847 K
• 卷排序：188

文摘

Solid solutions of transition metal borides HfB2-ZrB2 show better electrocatalytic behavior for hydrogen evolution reaction. Hf0.5Zr0.5B2 performed best with Tafel slope of 120 mV/decade and an overpotential of 420 mV at 10 mA/cm2 in 1 M NaOH. Hf0.8Zr0.2 B2 had good Tafel slopes of 260 and 150 mV/decade in 1 M NaOH and 1 M H2SO4, respectively. Hf0.8Zr0.2 B2 had overpotentials at 10 mA/cm2 of 610 and 550 mV in 1 M NaOH and 1 M H2SO4, respectively.