Ternary boron-, phosphorus- and oxygen-doped amorphous nickel nanoalloys for enhanced activity towards the oxygen evolution reaction
Ternary boron-, phosphorus- and oxygen-doped amorphous nickel nanoalloys for enhanced activity towards the oxygen evolution reaction
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DOI：
10.1016/j.elecom.2019.106649
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发表时间：
2020-02
影响因子：
5.4
通讯作者：
Xuehui Liu;J. Wu;Xing-jia Guo
中科院分区：
文献类型：
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作者：
Xuehui Liu;J. Wu;Xing-jia Guo
析氧反应（OER）是水裂解制氢和燃料电池中的关键反应。镍纳米合金是潜在的低成本OER电催化剂，但其催化活性和稳定性有待提高。阴离子元素掺杂镍催化剂并结合部分非晶化可以提高镍催化剂的电催化活性。在这项研究中，我们报道了一种B， P和o掺杂的三元非晶镍纳米合金（BPO-Ni）作为OER的有效电催化剂。与二元硼氧掺杂镍（BO-Ni）和磷氧掺杂镍（PO-Ni）相比，三元BPO-Ni在碱性条件下具有更高的OER催化活性和更好的耐久性。结果表明，B、P、o掺杂镍纳米合金的高催化活性来源于三元杂原子与Ni原子之间的协同作用，从而提高了它们的催化活性。本工作制备了一种新的非金属掺杂非晶镍纳米合金结构，为研究新型廉价高效的OER催化剂提供了一条途径。
The oxygen evolution reaction (OER) is a key reaction in hydrogen production through water splitting and in fuel cells. Nickel nanoalloys are potential low-cost OER electrocatalysts, but their catalytic activity and stability need to be improved. The doping of nickel catalysts with anionic elements combined with partial amorphization can improve their electrocatalytic activity. In this study, we report a ternary B-, P- and O-doped amorphous nickel nanoalloy (BPO-Ni) as an effective electrocatalyst for the OER. Compared with binary boron–oxygen-doped nickel (BO-Ni) and phosphorus–oxygen-doped nickel (PO-Ni), ternary BPO-Ni has higher OER catalytic activity and better durability under alkaline conditions. Our results reveal that the high catalytic activity of the B-, P- and O-doped Ni nanoalloy is derived from the synergistic effects between the ternary heteroatoms and the Ni atoms, thereby increasing their catalytic activity. This work produces a new non-metal doped amorphous nickel nanoalloy structure, and offers a way of studying novel inexpensive and efficient OER catalysts.