Single Atoms Anchored on Cobalt-Based Catalysts Derived from Hydrogels Containing Phthalocyanine toward the Oxygen Reduction Reaction,ACS Sustainable Chemistry & Engineering

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Single Atoms Anchored on Cobalt-Based Catalysts Derived from Hydrogels Containing Phthalocyanine toward the Oxygen Reduction Reaction
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2020-05-11 , DOI: 10.1021/acssuschemeng.0c02158
Yuanyuan Fu ₁ , Dawei Xu ₁ , Yefei Wang ₁ , Xuhui Li ₁ , Zhengbo Chen ₁ , Kai Li ₁ , Zhongfeng Li ₁ , Lirong Zheng ₂ , Xia Zuo ₁

Affiliation

Herein, a novel hydrogel-derived three-dimensional network-like nanostructured CoO_X/Co–N–C(800) catalyst was synthesized. CoO_X nanoparticles are embedded on N-doped carbon with single Co atoms anchored after pyrolysis. The as-prepared CoO_X/Co–N–C(800) catalyst possesses excellent electrochemical performance toward the oxygen reduction reaction with a positive onset and half-wave potential of 0.95 and 0.88 V (vs RHE), respectively, including almost a four-electron pathway (3.97) and better durability compared with the 20% commercial Pt/C catalyst in an alkaline electrolyte. Also, the results demonstrate that the high performance is attributed to the synergistic effect of CoO_X nanoparticles and single Co atoms.

中文翻译：

含酞菁水凝胶的钴基催化剂对氧还原反应的固定单原子

在这里，合成了一种新型的水凝胶衍生的三维网络状纳米结构的CoO _X / Co–N–C（800）催化剂。CoO _X纳米粒子嵌入热解后锚定的单个Co原子上的N掺杂碳上。所制备的CoO _X / Co–N–C（800）催化剂在氧还原反应方面具有出色的电化学性能，其正发作和半波电势分别为0.95和0.88 V（vs RHE），包括几乎四个-电子途径（3.97）和比碱性电解液中20％商用Pt / C催化剂更好的耐久性。而且，结果表明，高性能归因于CoO _X纳米颗粒和单个Co原子的协同作用。

更新日期：2020-05-11

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