Highly Dispersed Platinum on Honeycomb-like NiO@Ni Film as a Synergistic Electrocatalyst for the Hydrogen Evolution Reaction
Highly Dispersed Platinum on Honeycomb-like NiO@Ni Film as a Synergistic Electrocatalyst for the Hydrogen Evolution Reaction
复制标题
蜂窝状 NiO@Ni 薄膜上高度分散的铂作为析氢反应的协同电催化剂
DOI：
10.1021/acscatal.8b02212
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发表时间：
2018-09-01
期刊：
影响因子：
12.9
通讯作者：
Wang, Ping
中科院分区：
文献类型：
--
作者：
Chen, Zheng-Jun;Cao, Guo-Xuan;Wang, Ping
铂（Pt）被认为是析氢反应（HER）中性能最好的催化剂，但其过高的成本和在碱性电解质中的性能问题严重阻碍了其实际应用。在此，我们报告了Pt的内在活性和成本问题可以同时通过采用协同催化和纳米工程策略的组合来解决。根据密度泛函理论（DFT）的计算结果，Pt和NiO之间的协同催化比单独在碱性溶液中的Pt具有更好的HER活性，我们将高度分散的Pt纳米团簇/纳米颗粒沉积在Ni泡沫（NF）支撑的蜂窝状NiO@Ni膜上，成功合成了Pt/NiO@Ni/NF纳米复合催化剂。所得到的Pt/NiO@Ni/NF催化剂在碱性溶液中具有高而稳定的HER活性，更令人印象深刻的是，其经济的Pt含量低至~ 0.1 mg cm-2，优于商用Pt/C催化剂。
Platinum (Pt) is well-known as the best-performing catalyst for the hydrogen evolution reaction (HER), but its practical application is severely hindered by its prohibitively high cost and problematic performance in alkaline electrolyte. Herein, we report that the issues of intrinsic activity and cost concern of Pt can be simultaneously addressed by employing a combination of concerted catalysis and nanoengineering strategies. Motivated by our density functional theory (DFT) calculations that the cooperative catalysis between Pt and NiO would lead to a better HER activity in comparison to Pt solely in alkaline solution, we successfully synthesized a Pt/NiO@Ni/NF nanocomposite catalyst by depositing highly dispersed Pt nanoclusters/nanoparticles on a honeycomb-like NiO@Ni film supported on Ni foam (NF). The resulting Pt/NiO@Ni/NF catalyst outperforms the commercial Pt/C catalyst with a high and stable HER activity in alkaline solution and, more impressively, with an economical Pt content as low as ∼0.1 mg cm-2.