Metal–metal oxide core–shell heterostructures have exhibited outstanding performances in many realms, especially in catalysis, due to enriched phase interfaces and strong metal/metal oxide interactions. Herein, Co@CoO core–shell heterostructures with a crystalline Co core and an amorphous CoO shell have been prepared using a simple solution reduction process and shown to be effective catalysts for the electro-oxidation of hydrazine in alkaline media. The synergistic effect between the crystalline metallic Co core and the amorphous CoO shell leads to a small onset potential of −1.10 V vs. Ag/AgCl. In addition, the Co@CoO electrode has been shown to exhibit good long-term catalytic stability.

中文翻译：

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结晶无定形的Co @ CoO核-壳异质结构，用于肼的有效电氧化†

由于富集相界面和强大的金属/金属氧化物相互作用，金属-金属氧化物核-壳异质结构在许多领域都表现出出色的性能，尤其是在催化方面。本文中，使用简单的溶液还原工艺制备了具有晶体Co核和无定形CoO壳的Co @ CoO核-壳异质结构，并证明是在碱性介质中对肼进行电氧化的有效催化剂。结晶金属Co核与非晶CoO壳之间的协同效应导致-1.10 V vs. 10 V的较小启动电位。Ag / AgCl。另外，已证明Co @ CoO电极表现出良好的长期催化稳定性。