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
Citations
More filters
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
More filters
Journal ArticleDOI
Operando NAP-XPS unveils differences in MoO3 and Mo2C during hydrodeoxygenation
Karthick Murugappan,Eric M. Anderson,Detre Teschner,Detre Teschner,Travis E. Jones,Katarzyna Skorupska,Katarzyna Skorupska,Yuriy Román-Leshkov +7 more
TL;DR: In this article, the authors used operando near-ambient pressure X-ray photoelectron spectroscopy to reveal important differences in the Mo 3d oxidation states between the two catalysts during the hydrodeoxygenation of anisole.
Journal ArticleDOI
Enhanced Low-Frequency Electromagnetic Properties of MOF-Derived Cobalt through Interface Design
TL;DR: A perfect balance between dielectric and magnetic loss has been achieved by sample S-Co/C-0.3 and the findings may pave the way for the manufacture of metal-based metal-organic framework derivatives and the design of lightweight low-frequency electromagnetic materials.
Journal ArticleDOI
From rational design of a new bimetallic MOF family with tunable linkers to OER catalysts
Xuan Zhang,Jiangshui Luo,Jiangshui Luo,Jiangshui Luo,Kai Wan,Dieter Plessers,Bert F. Sels,Jianxun Song,Liugang Chen,Liugang Chen,Ting Zhang,Pengyi Tang,Pengyi Tang,Joan Ramon Morante,Jordi Arbiol,Jan Fransaer +15 more
TL;DR: In this paper, a new series of bimetallic metal-organic frameworks (MOFs) with tunable pillar linkers were prepared by a one-step synthesis method, and these MOFs retain the same crystal structure when the mole fraction (based on metal) of the two metals changes from 0 to 1 and both metal ions occupy random nodal positions.
Journal ArticleDOI
Enhanced oxygen vacancies to improve ethyl acetate oxidation over MnOx-CeO2 catalyst derived from MOF template
TL;DR: In this paper, the as-synthesized CeO2-supported Mn catalyst MnOx-CeO2s exhibited an outstanding activity for ethyl acetate (EtOAc) catalytic oxidation, which reached complete conversion at 210°C (T99°=※210°C), even at a high space velocity (WHSV
Journal ArticleDOI
Unconventional Oxygen Reduction Reaction Mechanism and Scaling Relation on Single-Atom Catalysts
Lixiang Zhong,Shuzhou Li +1 more
TL;DR: In this paper, the electrochemical oxygen reduction reaction (ORR) mechanism was considered to be O2 → OOH* → H2O (O* mechanism), which predicted reasonable ORR half-wave potentia.