Results 301 to 310 of about 1,098,304 (355)

Hierarchical Nanostructured Electrocatalysts for Oxygen Reduction Reaction

Journal of Nanoscience and Nanotechnology, 2020
Hierarchical nanostructured materials, which possess the porous structure of multiscale porosities on different pore diameters from micro-, meso- to macropores based on International Union of Pure and Applied Chemistry, are much desired to present the synergistic attractive advantages of each scale of hierarchical pores in the development of catalysis,
Zihan, Meng, Shichang, Cai, Wenmao, Tu, Haolin, Tang   +3 more
openaire   +2 more sources

Recent Advances in Electrocatalysts for Oxygen Reduction Reaction [PDF]

Chemical Reviews, 2016
The recent advances in electrocatalysis for oxygen reduction reaction (ORR) for proton exchange membrane fuel cells (PEMFCs) are thoroughly reviewed. This comprehensive Review focuses on the low- and non-platinum electrocatalysts including advanced platinum alloys, core-shell structures, palladium-based catalysts, metal oxides and chalcogenides, carbon-
Minhua Shao, Qiaowan Chang, Regis Chenitz   +2 more
exaly   +4 more sources

Electrochemical Oxygen Reduction Reaction

2014
In this chapter, the fundamentals of oxygen reduction reaction (ORR) including thermodynamics and electrode kinetics are presented. The ORR kinetics including reaction mechanisms catalyzed by different electrode materials and catalysts including Pt, Pt alloys, carbon materials, and nonnoble metal catalysts are discussed based on the literature in terms
Si, Fengzhan, Zhang, Yuwei, Yan, Liang, Zhu, Jianbing, Xiao, Meiling, Liu, Changpeng, Xing, Wei, Zhang, Jiujun   +7 more
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Electrocatalytic Oxygen Reduction Reaction

2008
Oxygen (O2) is the most abundant element in the Earth’s crust. The oxygen reduction reaction (ORR) is also the most important reaction in life processes such as biological respiration, and in energy converting systems such as fuel cells. ORR in aqueous solutions occurs mainly by two pathways: the direct 4-electron reduction pathway from O2 to H2O, and ...
Chaojie Song, Jiujun Zhang
openaire   +1 more source

Oxygen Reduction Reaction at Three‐Phase Interfaces

ChemPhysChem, 2010
AbstractThe kinetics of the oxygen reduction reaction (ORR) is studied at metal–supporting electrolyte–Nafion three‐phase interfaces. We first demonstrate that the sulfonate anions of Nafion are specifically adsorbed on a wide range of surfaces ranging from Pt(hkl) single‐crystal surfaces, Pt‐poly, Pt‐skin [produced on a Pt3Ni(111) surface by annealing
Ram, Subbaraman, Dusan, Strmcnik, Arvydas P, Paulikas, Vojislav R, Stamenkovic, Nenad M, Markovic   +4 more
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Metal-Free Catalysts for Oxygen Reduction Reaction

Chemical Reviews, 2015
The rising global energy demand and environmental impact of traditional energy resources pose serious challenges to human health, energy security, and environmental protection. One promising solution is fuel cell technology, which provides clean and sustainable power.
Dai, Liming, Xue, Yuhua, Qu, Liangti, Choi, Hyun-Jung, Baek, Jong-Beom   +4 more
openaire   +3 more sources

Carbon‐Based Electrocatalysts for Acidic Oxygen Reduction Reaction

Angewandte Chemie International Edition, 2023
AbstractOxygen reduction reaction (ORR) is vital for clean and renewable energy technologies, which require no fossil fuel but catalysts. Platinum (Pt) is the best‐known catalyst for ORR. However, its high cost and scarcity have severely hindered renewable energy devices (e.g., fuel cells) for large‐scale applications.
Pengbo Cui, Linjie Zhao, Yongde Long, Liming Dai, Chuangang Hu   +4 more
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The oxygen reduction reaction on [NiFe] hydrogenases

Physical Chemistry Chemical Physics, 2018
Oxygen tolerance capacity is critical for hydrogen oxidation/evolution catalysts.
Siyao Qiu, Seth Olsen, Douglas R. MacFarlane, Chenghua Sun   +3 more
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Highly efficient electrocatalysts for oxygen reduction reaction

Chemical Communications, 2007
Highly efficient and chemically compatible LnxSr1-xCoO3-delta (Ln = La, Sm, Gd, ...)/Co3O4 electrocatalysts for oxygen reduction reaction are presented and the very low cathode polarization resistances and excellent performances implied their promising application for developing intermediate-temperature solid oxide fuel cells (SOFCs), as well as ...
Haizhou, Zhang, Weishen, Yang
openaire   +2 more sources

Carbon-Free Electrocatalyst for Oxygen Reduction and Oxygen Evolution Reactions

ACS Applied Materials & Interfaces, 2015
A nanoporous Ag-embedded SnO2 thin film was fabricated by anodic treatment of electrodeposited Ag-Sn alloy layers. The ordered nanoporous structure formed by anodization played a key role in enhancing the electrocatalytic performance of the Ag-embedded SnO2 layer in several ways: (1) the roughness factor of the thin film is greatly increased from 23 in
Yang, Yang, Huilong, Fei, Gedeng, Ruan, Lei, Li, Gunuk, Wang, Nam Dong, Kim, James M, Tour   +6 more
openaire   +3 more sources