Fabrication of Hollow CoP/TiOx Heterostructures for Enhanced Oxygen Evolution Reaction.,Small

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Fabrication of Hollow CoP/TiOx Heterostructures for Enhanced Oxygen Evolution Reaction.
Small ( IF 13.0 ) Pub Date : 2019-12-08 , DOI: 10.1002/smll.201905075
Zibin Liang ₁ , Wenyang Zhou ₁ , Song Gao ₁ , Ruo Zhao ₁ , Hao Zhang ₁ , Yanqun Tang ₁ , Jinqian Cheng ₁ , Tianjie Qiu ₁ , Bingjun Zhu ₁ , Chong Qu ₁ , Wenhan Guo ₁ , Qian Wang ₁ , Ruqiang Zou ₁

Affiliation

Transition-metal phosphides have flourished as promising candidates for oxygen evolution reaction (OER) electrocatalysts. Herein, it is demonstrated that the electrocatalytic OER performance of CoP can be greatly improved by constructing a hybrid CoP/TiOx heterostructure. The CoP/TiOx heterostructure is fabricated using metal-organic framework nanocrystals as templates, which leads to unique hollow structures and uniformly distributed CoP nanoparticles on TiOx . The strong interactions between CoP and TiOx in the CoP/TiOx heterostructure and the conductive nature of TiOx with Ti3+ sites endow the CoP-TiOx hybrid material with high OER activity comparable to the state-of-the-art IrO2 or RuO2 OER electrocatalysts. In combination with theoretical calculations, this work reveals that the formation of CoP/TiOx heterostructure can generate a pathway for facile electron transport and optimize the water adsorption energy, thus promoting the OER electrocatalysis.

中文翻译：

制备空心CoP / TiOx异质结构以增强氧气释放反应。

过渡金属磷化物已成为氧气释放反应（OER）电催化剂的有前途的候选者。在本文中，证明了通过构建杂化的CoP / TiOx异质结构可以大大提高CoP的电催化OER性能。CoP / TiOx异质结构是以金属-有机骨架纳米晶体为模板制备的，这导致了独特的空心结构和Cox纳米颗粒在TiOx上的均匀分布。CoP / TiOx异质结构中CoP和TiOx之间的强相互作用以及具有Ti3 +位的TiOx的导电特性使CoP-TiOx杂化材料具有与最新的IrO2或RuO2 OER电催化剂相媲美的高OER活性。结合理论计算，

更新日期：2020-01-16

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