Journal ArticleDOI
Co-Cu Bimetallic Metal Organic Framework Catalyst Outperforms the Pt/C Benchmark for Oxygen Reduction.
Mohamed Fathi Sanad,Alain R. Puente Santiago,Sarah A. Tolba,Ariful Ahsan,Olivia Fernandez-Delgado,Mina Shawky Adly,Mina Shawky Adly,Elhussein M. Hashem,Mohamed Mahrous Abodouh,M. Samy El-Shall,Sreeprasad T. Sreenivasan,Nageh K. Allam,Luis Echegoyen +12 more
TLDR
In this paper, a nonprecious Co-Cu bimetallic metal-organic framework (MOF) was designed using a low-temperature hydrothermal method that outperforms the electrocatalytic activity of Pt/C for ORR in alkaline environments.Abstract:
Platinum (Pt)-based-nanomaterials are currently the most successful catalysts for the oxygen reduction reaction (ORR) in electrochemical energy conversion devices such as fuel cells and metal-air batteries. Nonetheless, Pt catalysts have serious drawbacks, including low abundance in nature, sluggish kinetics, and very high costs, which limit their practical applications. Herein, we report the first rationally designed nonprecious Co-Cu bimetallic metal-organic framework (MOF) using a low-temperature hydrothermal method that outperforms the electrocatalytic activity of Pt/C for ORR in alkaline environments. The MOF catalyst surpassed the ORR performance of Pt/C, exhibiting an onset potential of 1.06 V vs RHE, a half-wave potential of 0.95 V vs RHE, and a higher electrochemical stability (ΔE1/2 = 30 mV) after 1000 ORR cycles in 0.1 M NaOH. Additionally, it outperformed Pt/C in terms of power density and cyclability in zinc-air batteries. This outstanding behavior was attributed to the unique electronic synergy of the Co-Cu bimetallic centers in the MOF network, which was revealed by XPS and PDOS.read more
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Journal ArticleDOI
Bimetallic metal–organic frameworks and MOF-derived composites: Recent progress on electro- and photoelectrocatalytic applications
TL;DR: In this paper , a review of the state-of-the-art on bimetallic MOFs and derived composites for the main current types of electro- and photoelectrocatalytic applications is presented.
Journal ArticleDOI
Bimetallic metal–organic frameworks and MOF-derived composites: Recent progress on electro- and photoelectrocatalytic applications
Ekta Rani,Yingtang Zhou,Vishnu Sivarudran Pillai,Reza Abazari,Loreto Cartagena Caffarena,Jing Chen,Muhammad Tahir,Muhammad Tahir,Anuj Kumar,Riyadh Ramadhan Ikreedeegh,Ekta Rani,Harishchandra Singh,Alexander M. Kirillov,Alexander M. Kirillov +13 more
TL;DR: In this article, a review of the state-of-the-art on bimetallic MOFs and derived composites for the main current types of electro- and photo-electrocatalytic applications is presented.
Journal ArticleDOI
A pH-universal ORR catalyst with single-atom iron sites derived from a double-layer MOF for superior flexible quasi-solid-state rechargeable Zn–air batteries
Meiqi Zhao,Haoran Liu,Hongwei Zhang,Wen Chen,Hanqin Sun,Zhenhua Wang,Biao Zhang,Lin Song,Yong Yang,Chao Ma,Yunhu Han,Yunhu Han,Yunhu Han,Wei Huang +13 more
TL;DR: In this paper, a double-layer MOF strategy was used to fabricate a single Fe site catalyst Fe1/d-CN by developing a double layer MOF, which showed an excellent ORR activity in the pH-universal range, especially in alkaline electrolytes.
Journal ArticleDOI
Freestanding Metal–Organic Frameworks and Their Derivatives: An Emerging Platform for Electrochemical Energy Storage and Conversion
Bing He,Qichong Zhang,Zhen-Zhen Pan,Lei Li,Chaowei Li,Ying Ling,Zhixun Wang,Mengxiao Chen,Zhe Wang,Yagang Yao,Qingwen Li,Litao Sun,John Wang,Lei Wei +13 more
TL;DR: In this article , the authors provide a comprehensive overview on the structural features and fabrication techniques of freestanding metal-organic frameworks (MOF-based/derived electrodes) for electrochemical energy storage and conversion.
References
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Journal ArticleDOI
Oxygen Reduction Reaction Measurements on Platinum Electrocatalysts Utilizing Rotating Disk Electrode Technique II. Influence of Ink Formulation, Catalyst Layer Uniformity and Thickness
Kazuma Shinozaki,Kazuma Shinozaki,Kazuma Shinozaki,Jason W. Zack,Svitlana Pylypenko,Svitlana Pylypenko,Bryan S. Pivovar,Shyam S. Kocha +7 more
TL;DR: In this paper, the performance of a rotating disk electrode (RDE) setup for electrochemical area (ECA) and oxygen reduction reaction (ORR) area specific activity and mass specific activity (MA) was characterized for a statistically significant number of independent samples.
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DMol3 DFT studies: from molecules and molecular environments to surfaces and solids
Journal ArticleDOI
Conductive Metal-Organic Frameworks with Extra Metallic Sites as an Efficient Electrocatalyst for the Hydrogen Evolution Reaction.
TL;DR: Density functional theory calculations demonstrate that the 2D conjugated framework employed in this work renders M23(M13∙HAHATN)2 a high electric conductivity with narrow bandgap for electron transfer and a favorable in‐plane porous structure for mass transfer, which endow the new conductive MOFs with an enhanced electroactivity for hydrogen evolution reaction (HER) electrocatalysis.
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Metal–organic frameworks: a promising platform for constructing non-noble electrocatalysts for the oxygen-reduction reaction
TL;DR: In this paper, the progress and current developments of metal-organic frameworks (MOF) derivatives as non-noble ORR catalysts are summarized, and the prospects and future perspectives of MOF utilization in fabricating nonnoble catalysts with finely controlled local electronic structures, extrinsic structures and interface properties are proposed.
Journal ArticleDOI
Photocatalytic uphill conversion of natural gas beyond the limitation of thermal reaction systems
Shusaku Shoji,Xiaobo Peng,Akira Yamaguchi,Ryo Watanabe,Choji Fukuhara,Yohei Cho,Tomokazu Yamamoto,Syo Matsumura,Min Wen Yu,Satoshi Ishii,Takeshi Fujita,Hideki Abe,Masahiro Miyauchi +12 more
TL;DR: In this article, a photoexcited holes and electrons are used for CH4 oxidation over STO and CO2 reduction over rhodium, respectively, and the lattice oxygens act as mediator to drive dry reforming of methane.