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
The effect of crystallite size on low-temperature hydrothermal stability of Cu-SAPO-34
TL;DR: In this article, the effect of crystallite size on the low-temperature hydrothermal stability of Cu-SAPO-34 was comparatively investigated, and the results showed that smaller particle size possessed better resistance to treatment at 70 °C in humid conditions.
Journal ArticleDOI
The adsorption mechanism of platinum on phosphorus-doped single walled carbon nanotube
TL;DR: In this article, density functional theory calculations were used to study the adsorption nature of atomic platinum on phosphorus-doped carbon nanotube. And the results demonstrate that the increase in binding energy primarily results from the significant orbital hybridization between Pt sd hybridized orbital and P sp hybridized orbit.
Journal ArticleDOI
Metal-organic framework: Structure and magnetic properties of [Cu 3 (BTC) 2 (L)x·(CuO) y ] n (L=H 2 O, DMF)
TL;DR: In this paper, the authors used X-ray diffraction and scanning electronic microscopy to perform structural and morphologic characterizations of the compounds [Cu 3 (BTC) 2 (L) x ·(CuO) y ], with BTC (benzene 1,3,5-tricarboxylate) and L (H 2 O or DMF) were prepared using electrochemical synthesis.