Journal ArticleDOI
Ultrasmall Pt2Sr alloy nanoparticles as efficient bifunctional electrocatalysts for oxygen reduction and hydrogen evolution in acidic media
Xingwang Zhang,Xiangnan Liu,Shaoyun Hao,Guokui Zheng,Zhiwei Su,Yahui Wang,Qiqi Wang,Lecheng Lei,Yi He,Xingwang Zhang +9 more
TLDR
In this article, a fine PtxSr alloy (2 nm) supported on N-doped carbon pyrolyzing from ZIF-8 as bifunctional electrocatalysts toward ORR and HER in acidic media was reported.About:
This article is published in Journal of Energy Chemistry.The article was published on 2022-01-01. It has received 21 citations till now. The article focuses on the topics: Overpotential & Bifunctional.read more
Citations
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Promoting interfacial charge transfer by B/N co-doping enable efficient ORR catalysis of carbon encapsulated Fe2N
ZhiZhong Xie,Qiaoling Jianqiang Li,Xingkai Peng,Xuewei Wang,Liang Guo,Xing Hua Zhang,Zunming Lu,Xiaojing Yang,Xiaofei Yu,Lanlan Li +9 more
TL;DR: In this paper , B/N co-doping porous carbon shell encapsulated Fe2N nanoparticles (NPs) was synthesized as a catalysts for ORR.
Journal ArticleDOI
Boosting the Oxygen Reduction Reaction Behaviour of Atomic Fe-N4 Active Sites in the Porous Honeycomb-like Carbon via P Heteroatom Doping
Lei Wang,Jin Li,Kai-Yue Fan,Hongru Jiang,Fenghong Lu,Lixiu Cui,Bin Li,Qi Zhang,Gao-Chao Fan,Ling‐Li Zong +9 more
TL;DR: Fe-N-C single atom electrocatalysts (SAECs) with porphyrin-like Fe-N4 species are one of the most promising alternatives to platinum-group-metal-based electrocalysts for oxygen reduction reaction (ORR) as discussed by the authors .
Journal ArticleDOI
A critical review of research progress for metal alloy materials in hydrogen evolution and oxygen evolution reaction
Journal ArticleDOI
Highly Dispersed PtNi Nanoparticles Modified Carbon Black as High-performanced Electrocatalyst for Oxygen Reduction in Acidic Medium
Yingqian Wang,Yingqian Wang,Ce Han,Peng Xie,Peng Xie,He Li,He Li,Pengfei Yao,Pengfei Yao,Jing Cao,Jing Cao,Mingbo Ruan,Ping Song,Gong Xue,Min Lu,Weilin Xu,Weilin Xu +16 more
TL;DR: In this article, a series of carbon-supported Ni samples were firstly prepared by tuning the Ni loading amount and pyrolysis temperature, and the highly dispersed PtNi nanoparticles modified carbon nanohybrid (PtNi/C) with low Pt content of 2.29 wt % can be obtained, which exhibits remarkable and durable ORR activity with E1/2 of 0.841 V vs. RHE via efficient 4e- ORR process in acidic media.
Journal ArticleDOI
Highly dispersed PtNi nanoparticles modified carbon black as high-performanced electrocatalyst for oxygen reduction in acidic medium
TL;DR: In this article , a series of carbon-supported Ni samples were firstly prepared by tuning the Ni loading amount and pyrolysis temperature, and the highly dispersed PtNi nanoparticles modified carbon nanohybrid (PtNi/C) with low Pt content of 2.29 wt% can be obtained, which exhibits remarkable and durable ORR activity with E1/2 of 0.841 V vs. RHE via efficient 4e- ORR process in acidic media.
References
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Electrocatalyst approaches and challenges for automotive fuel cells
TL;DR: Taking the step towards successful commercialization requires oxygen reduction electrocatalysts that meet exacting performance targets, and these catalyst systems will need to be highly durable, fault-tolerant and amenable to high-volume production with high yields and exceptional quality.
Journal ArticleDOI
Design of electrocatalysts for oxygen- and hydrogen-involving energy conversion reactions
TL;DR: The emphasis of this review is on the origin of the electrocatalytic activity of nanostructured catalysts toward a series of key clean energy conversion reactions by correlating the apparent electrode performance with their intrinsic electrochemical properties.
Journal ArticleDOI
Improved Oxygen Reduction Activity on Pt3Ni(111) via Increased Surface Site Availability
Vojislav R. Stamenkovic,Vojislav R. Stamenkovic,Ben Fowler,Bongjin Simon Mun,Guofeng Wang,Philip N. Ross,Chris Lucas,Nenad M. Markovic +7 more
TL;DR: It is demonstrated that the Pt3Ni( 111) surface is 10-fold more active for the ORR than the corresponding Pt(111) surface and 90-foldMore active than the current state-of-the-art Pt/C catalysts for PEMFC.
Journal ArticleDOI
Pd-Pt Bimetallic Nanodendrites with High Activity for Oxygen Reduction
Byungkwon Lim,Majiong Jiang,Pedro H. C. Camargo,Eun Chul Cho,Jing Tao,Xianmao Lu,Yimei Zhu,Younan Xia +7 more
TL;DR: Pd-Pt bimetallic nanodendrites consisting of a dense array of Pt branches on a Pd core by reducing K2PtCl4 with L-ascorbic acid in the presence of uniform Pd nanocrystal seeds in an aqueous solution showed relatively large surface areas and particularly active facets toward the oxygen reduction reaction (ORR), the rate-determining step in a proton-exchange membrane fuel cell.
Journal ArticleDOI
Quantifying defects in graphene via Raman spectroscopy at different excitation energies
Luiz Gustavo Cançado,Ado Jorio,E. H. Martins Ferreira,Fernando Stavale,Carlos A. Achete,Rodrigo B. Capaz,Marcus V. O. Moutinho,Antonio Lombardo,Tero S. Kulmala,Andrea C. Ferrari +9 more
TL;DR: It is found that the ratio between the D and G peak intensities, for a given defect density, strongly depends on the laser excitation energy, and a simple equation for the determination of the point defect density in graphene via Raman spectroscopy is presented.