The HER kinetics of electrodeposited Ni-W-TiO₂ composites of various alloy compositions, and their particle-free counterparts, were characterized using rotating electrodes. The composites exhibited a favorable decrease in the HER Tafel slope, promoting the reaction. An electrochemical ferricyanide reaction was used to evaluate the deposit area. Comparing the composite, with TiO₂, to its alloy counterpart, without TiO₂, the active surface area depended upon the applied current density of the deposition. When the electroactive areas and the metal W/Ni ratios were similar, electrocatalysts containing TiO₂ intrinsically improved HER.

中文翻译：

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Ni-W-TiO ₂复合材料增强析氢反应

使用旋转电极表征了各种合金组成的电沉积Ni-W-TiO ₂复合材料及其无颗粒对应物的HER动力学。该复合材料在HER Tafel斜率上显示出有利的降低，从而促进了反应。电化学铁氰化物反应用于评估沉积面积。将具有TiO ₂的复合材料与没有TiO _2的其合金对应物进行比较，有效表面积取决于所施加的沉积电流密度。当电活性面积和金属W / Ni比相似时，含TiO _2的电催化剂本质上改善了HER。