Results 31 to 40 of about 22,179 (152)

Nitrogen-Doped Carbon Nanodots@Nanospheres as An Efficient Electrocatalyst for Oxygen Reduction Reaction [PDF]

, 2015
In this work, nitrogen-doped carbon nanodots (N-CNDs) with sizes of 2–6 nm were successfully synthesized by hydrothermal treatment of natural biomass (e.g., fresh grass) at 180 °C for 10 h.
Liu, Porun, Zhao, Huijun, An, Taicheng, Chen, Jiangyao, Chen, Ying, Zhang, Haimin, Wang, Yun, Li, Yibing   +7 more
core   +1 more source

Heteroatom Doping Synergistic Iron Nitride Induced Charge Redistribution of Carbon based Electrocatalyst with Boosted Oxygen Reduction Reaction

ChemElectroChem, 2023
Oxygen reduction reaction (ORR) is Achilles’ heel of zinc‐air battery. The ideal electrocatalyst for ORR should combine both high activity and high stability.
Dr. Yuyu Guo, Dr. Dianyu Xu, Dr. Shuting Li, Dr. Jinxi Han, Prof. Qi Yang, Prof. Zhengqiang Xia, Prof. Gang Xie, Prof. Sanping Chen, Prof. Shengli Gao   +8 more
doaj   +1 more source

What Limits Conquest of Stability Descriptors? – Intriguing Aspects of Dissolution of Oxygen Evolution Electrocatalysts

ChemElectroChem
Design of active and stable electrocatalysts for the oxygen evolution reaction (OER) requires in‐depth understanding of the electrocatalyst properties and interfacial structural dynamics during OER.
Dr. Aleksandar R. Zeradjanin, Dr. Ahyoun Lim, Dr. Ioannis Spanos, Dr. Justus Masa   +3 more
doaj   +1 more source

High-performance Fe–N–C electrocatalysts with a “chain mail” protective shield

Nano Materials Science, 2021
Nitrogen-coordinated iron atoms on carbon supports (Fe–N–C) are among the most promising noble-metal-free electrocatalysts for oxygen reduction reaction (ORR). However, their unsatisfactory stability limits their practical application.
Zixun Yu, Chang Liu, Junsheng Chen, Ziwen Yuan, Yuan Chen, Li Wei   +5 more
doaj   +1 more source

Highly Efficient Electrocatalytic Hydrogen Production over Carbon Nanotubes Loaded with Platinum Nanoparticles Using Solution Processing

Advanced Materials Interfaces, 2023
Proton exchange membrane (PEM) electrolyzers are used for hydrogen (H2) production by water electrolysis. The commercial cathodic electrocatalyst for this process is typically mechanically mixed platinum on carbon (Pt/C).
Osama R. M. Metawea, Miyuki Nara, Takeharu Murakami, Satoshi Wada, Katsushi Fujii, Yoshihiro Ito, Masuki Kawamoto   +6 more
doaj   +1 more source

Synthesis and electrochemical characterization of Graphene-Polyallylamine Nanocomposites as a New Supports of Pt Catalyst for Direct Methanol Fuel Cell Application [PDF]

Hydrogen, Fuel Cell & Energy Storage, 2019
In this research, nanocomposites of Platinum Graphene-Polyallylamine (Pt/PAA/GNP) were developed to increase the methanol electro-oxidation activity and stability of commercial Pt/C electrocatalyst.
Maryam Yaldagard
doaj   +1 more source

Novel mixed heterovalent (Mo/Co)Ox-zerovalent Cu system as bi-functional electrocatalyst for overall water splitting

Scientific Reports
A novel hybrid ternary metallic electrocatalyst of amorphous Mo/Co oxides and crystallized Cu metal was deposited over Ni foam using a one-pot, simple, and scalable solvothermal technique.
Ahmed R. Tartour, Moustafa M. S. Sanad, Ibrahim S. El-Hallag, Youssef I. Moharram   +3 more
doaj   +1 more source

Stable and efficient hydrogen evolution reaction catalyzed by NiO-Rh2P heterostructure electrocatalyst

Catalysis Communications, 2022
A NiO-Rh2P heterostructure electrocatalyst was constructed by phosphating the NiO-Rh structure. Due to the high capability of water dissociation by NiO, only 46 mV overpotential was demanded to achieve 10 mA cm−2 for the NiO-Rh2P, which is 73 mV lower ...
Shuyuan Pan, Xinxin Yu, Ying Ling, Zehui Yang   +3 more
doaj   +1 more source

Highly stable PtRuTiOx/C anode electrocatalyst for direct methanol fuel cells

, 2007
In the present investigation, PtRuTiOx/C electrocatalyst was prepared by a modified polyol synthesis method and the as-prepared electrocatalyst was treated under the reductive atmosphere (30 vol% H-2 in Ar) at 500 degrees C for 2 h (denoted as PtRuTiOx/C-
孙公权, Jiang, Luhua, Yan, Shiyou, Xin, Qin, Sun, Gongquan, Mao, Qing, Tian, Juan   +6 more
core   +1 more source

Enhanced oxygen reduction with single-atomic-site iron catalysts for a zinc-air battery and hydrogen-air fuel cell

Nature Communications, 2018
Development of fuel cells and metal-air batteries is hindered by electrocatalyst performance, which can be enhanced with uniform and atomically dispersed active sites. Here the authors report an iron-based electrocatalyst for oxygen reduction in cathodes
Yuanjun Chen, Shufang Ji, Shu Zhao, Wenxing Chen, Juncai Dong, Weng-Chon Cheong, Rongan Shen, Xiaodong Wen, Lirong Zheng, Alexandre I. Rykov, Shichang Cai, Haolin Tang, Zhongbin Zhuang, Chen Chen, Qing Peng, Dingsheng Wang, Yadong Li   +16 more
doaj   +1 more source