The synthesis of new 'Pt-free' electrocatalysts (ECs) for the oxygen reduction reaction (ORR) is reported. The ECs are characterized by a hierarchical 'core-shell' morphology; the 'core' is made of graphene, that is covered by a cratered, microporous carbon nitride (CN) 'shell'. The latter supports nanoparticles of M1 and Sn metals (M1 = Co; Ni) in 'coordination nests'. These latter are holes in the CN matrix, whose walls consist of N- and C-ligands. Two groups of ECs are studied: (i) 'pristine' ECs; and (ii) 'activated' ECs, that are obtained from the 'pristine' ECs by means of a suitable activation process (A) aimed at improving the performance in the ORR. Here is clarified the interplay existent between: (i) the chemical composition, morphology, structure and A; and (ii) the ORR performance and mechanism as a function of the pH of the environment. The resulting insights improve the fundamental understanding of this family of ECs and open the door to the devising of new preparations of 'Pt-free' ECs for the ORR, which: (i) are stabilized by a CN matrix and; (ii) exhibit an improved performance.
Graphene-Supported Silver-Iron Carbon Nitride Derived from Thermal Decomposition of Silver Hexacyanoferrate as Effective Electrocatalyst for the Oxygen Reduction Reaction in Alkaline Media
Unravelling of the chemistry and the performance in the oxygen reduction reaction of carbon nitride-supported bimetallic electrocatalysts through X-ray photoelectron spectroscopy
Free-sustaining Three-dimensional S235 Steel-based Porous Electrocatalyst for Highly Efficient and Durable Oxygen Evolution
以S235钢为基体，采用一步表面改性的方法制备了一种新型的析氧反应催化剂（3D S235-P钢）。对标准碳锰钢进行表面磷化，从而形成具有高比表面积的独特3D互连纳米多孔表面，这有助于电催化引发的析氧反应。制备的3D S235-P钢在碱性条件下表现出较强的电催化OER活性，其过电位较低（η=326 mV，j=10 mA cm-2），Tafel斜率较小（68.7 mV dec-1）。此外，发现该催化剂在pH 13下在长期使用条件下用作析氧电极是稳定的，这由足够的电荷到氧的转化率（法拉第效率：在10 mA cm-2和5 mA cm-2下分别为82.11%和88.34%）证明。此外，结果表明，所选择的表面改性使S235钢成为OER电催化剂，其在中性pH条件下充分且稳定地工作。我们的研究表明，高催化活性可能源于OER过程中产生的Fe/（Mn）氢氧化物/氧代氢氧化物。因此，磷化处理不仅是优化标准碳锰钢的电催化性能的有效方法，而且还能够在能量转换领域开发低成本和丰富的钢。
Enhancing Oxygen Reduction Reaction on Pt-Based Electrocatalysts through Surface Decoration for Improved OH Reduction Equilibrium and Reduced H2O Adsorption
Multidimensional Design of Metal-Nitrogen-Carbon Electrocatalysts for Direct Propylene Epoxidation
Advanced Institute for Materials Research (WPI-AIMR), Tohoku University（东北大学先进材料研究所）；Graduate School of Engineering, Tohoku University（东北大学研究生院工学研究科）；School of Chemical and Biomolecular Engineering, The University of Sydney（悉尼大学化学与生物分子工程学院）
Spin State versus Potential of Zero Charge as Predictors of Density-Dependent Oxygen Reduction in M-N-C Electrocatalysts
Advanced Institute for Materials Research (WPI-AIMR), Tohoku University（东北大学先进物质研究所）；The Frontier Research Institute for Interdisciplinary Sciences (FRIS), Tohoku University（东北大学前沿跨学科科学研究院）；School of Chemical and Biomolecular Engineering, The University of Sydney（悉尼大学化学与生物分子工程学院）；Sydney Analytical, Core Research Facilities, The University of Sydney（悉尼大学悉尼分析核心研究设施）
Leveraging Data Mining, Active Learning, and Domain Adaptation in a Multi-Stage, Machine Learning-Driven Approach for the Efficient Discovery of Advanced Acidic Oxygen Evolution Electrocatalysts
Pritzker School of Molecular Engineering, University of Chicago（芝加哥大学普利兹克分子工程学院）；Data Science Institute, University of Chicago（芝加哥大学数据科学研究所）；Argonne National Laboratory（阿贡国家实验室）；North China Electric Power University（华北电力大学）；Nanjing University（南京大学）；The Hong Kong University of Science and Technology（香港科技大学）；Department of Computer Science, University of Chicago（芝加哥大学计算机科学系）
Prussian Blue Modified Reduced Graphene Oxide as Support for Pt Nanoparticles: Development of Efficient Catalysts for Oxygen Electroreduction in Acid Medium
Nafion-induced reduction of manganese and its impact on the electrocatalytic properties of a highly active MnFeNi oxide for bifunctional oxygen conversion
