Facile Synthesis of Sulfur‐Containing Transition Metal (Mn, Fe, Co, and Ni) (Hydr)oxides for Efficient Oxygen Evolution Reaction,ChemCatChem

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Facile Synthesis of Sulfur‐Containing Transition Metal (Mn, Fe, Co, and Ni) (Hydr)oxides for Efficient Oxygen Evolution Reaction
ChemCatChem ( IF 3.8 ) Pub Date : 2019-12-19 , DOI: 10.1002/cctc.201901493
Feng Zeng ₁ , Cornelia Broicher ₁ , Jan P. Hofmann ₂ , Stefan Palkovits ₁ , Regina Palkovits ₁

Affiliation

Transition metal based materials are promising non‐noble metal based catalysts for the oxygen evolution reaction (OER). Transition metal (hydr)oxides have been intensively investigated as OER catalysts. Promoting transition metal (hydr)oxides with heteroatoms or using carbon materials as additives can increase the electric conductivity and tailor the nature of active sites to enhance OER activity. We developed a scalable one‐step wet chemical method to prepare sulfur‐containing transition metal (manganese, iron, cobalt, and nickel) (hydr)oxides coupled with carbon nanotubes as additives to tailor OER performance. Facilitated OER kinetics, enhanced intrinsic activity, and high electrochemically active surface area derived from sulfur promotion with/without carbon nanotubes addition together with the nanostructure of the materials led to decent OER performance. Sulfur‐containing cobalt (hydr)oxide achieved a low overpotential of 0.38 V at 10 mA cm⁻², a low Tafel slope of 66 mV dec⁻¹, and good stability.

中文翻译：

高效合成含硫过渡金属（Mn，Fe，Co和Ni）（Hydr）氧化物以进行有效的放氧反应

过渡金属基材料是有希望的用于氧气逸出反应（OER）的非贵金属基催化剂。过渡金属（氢）氧化物已被广泛研究用作OER催化剂。用杂原子促进过渡金属（氢）氧化物或使用碳材料作为添加剂可提高电导率并调整活性位点的性质以增强OER活性。我们开发了一种可扩展的一步式湿化学方法，以制备含硫的过渡金属（锰，铁，钴和镍）（氢）氧化物与碳纳米管一起作为添加剂来调节OER性能。促进OER动力学，增强内在活性，硫的促进和/或不添加碳纳米管以及材料的纳米结构带来的高电化学活性表面积导致了不错的OER性能。含硫的（氢氧化）钴在10 mA厘米时实现了0.38 V的低过电势^-2，塔菲尔斜率低，为66 mV dec ^-1，稳定性好。

更新日期：2019-12-19

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