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
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Journal ArticleDOI
Atomically Dispersed Fe/Co Dual Sites Electrocatalysts Derived from Covalent Triazine Frameworks for Boosting the Oxygen Reduction
TL;DR: In this article , a covalent triazine framework was constructed for Fe/Co binary metallic SACs by constructing a triazine-based Covalent Triazine Framework (CTF) for ORR.
Journal ArticleDOI
A co-doped oxygen reduction catalyst with FeCu promotes the stability of microbial fuel cells.
Han Li,Huihui Shi,Yi Dai,Henghui You,Samuel Raj Babu Arulmani,Hongguo Zhang,Chunhua Feng,Lei Huang,Tianyu Zeng,Jia Yan,Xianjie Liu +10 more
TL;DR: In this article , a stable heteroatomic substrate using a copper material organic framework as a precursor, covered by Fe-based active sites, is presented, where the presence of Fe0 enhances the electrical conductivity of the catalytic, thus promoting ORR efficiency.
Journal ArticleDOI
Nitrogen-Doped Carbon-Encapsulated FeCo Alloy Nanostructures with Surface-Dangling Fe(Co)-Nx Active Sites for Oxygen Reduction in Alkaline and Acid Media
Xiaowei Song,Haihong Zhong,Kexin Xu,Luis Alberto Estudillo-Wong,Miaomiao Pei,Meixue Cao,Heng Xu,Nicolas Alonso-Vante,Yongjun Feng,Dianqing Li +9 more
Journal ArticleDOI
Role of molecular modelling in the development of metal-organic framework for gas adsorption applications
TL;DR: The importance of density functional theory-based molecular modeling studies in offering design clues to improve the gas adsorption and storage capacity of existing MOF architectures is discussed in this paper .
Journal ArticleDOI
Ultra-Small Nanoparticles of Pd-Pt-Ni Alloy Octahedra with High Lattice Strain for Efficient Oxygen Reduction Reaction
Yunhao Liu,Wenhua Lou,Hui Xia Feng,Zhihang Liu,Qiuyan Chen,Gui Bing Liao,Xiaoting Huang,Panagiotis Tsiakaras,Peikang Shen +8 more
TL;DR: In this article , a ternary alloy small-sized octahedra was synthesized by a Pd seed-inducing-growth route, which showed an enhanced mass activity of 0.93 A mg−1/Pt+Pd in ORR.
References
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Journal ArticleDOI
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