Dependence of (Photo)electrochemical Properties on Geometry Factors of Hydrothermally Synthesized Delafossite Copper Gallium Oxide CuGaO2toward Oxygen Evolution Reaction

2018 ◽  
Vol 165 (10) ◽  
pp. H607-H613 ◽  
Author(s):  
Swati Mohan ◽  
Yuanbing Mao
Keyword(s):  
Electrochemical Properties ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Gallium Oxide

Surface morphology and electrochemical properties of RuO2-doped Ti/IrO2-ZrO2 anodes for oxygen evolution reaction

2019 ◽  
Vol 778 ◽  
pp. 593-602 ◽  
Author(s):  
Bao Liu ◽  
Shuo Wang ◽  
Chengyan Wang ◽  
Yongqiang Chen ◽  
Baozhong Ma ◽  
...  
Keyword(s):  
Surface Morphology ◽  
Electrochemical Properties ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction

Hierarchical nanosheet-based CoMoO4–NiMoO4nanotubes for applications in asymmetric supercapacitors and the oxygen evolution reaction

2015 ◽  
Vol 3 (45) ◽  
pp. 22750-22758 ◽  
Author(s):  
Zhuoxun Yin ◽  
Yujin Chen ◽  
Yang Zhao ◽  
Chunyan Li ◽  
Chunling Zhu ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Asymmetric Supercapacitors ◽  
Superior Electrochemical Properties

Hierarchical nanosheet-based CoMoO4–NiMoO4nanotubes exhibit superior electrochemical properties for applications in asymmetric supercapacitors and the oxygen evolution reaction.

Synthesis and Characterization of RuO2 Anode Materials with Large Surface Areas for Oxygen Evolution Reaction

2012 ◽  
Vol 15 (4) ◽  
pp. 271-276 ◽  
Author(s):  
Yang Zhang ◽  
Lixia Yue ◽  
Ke Teng ◽  
Shiyong Yuan ◽  
Hongchao Ma
Keyword(s):  
Porous Structure ◽  
Electrochemical Properties ◽  
Surface Area ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Mesoporous Structure ◽  
Large Surface Area ◽  
Precipitation Method ◽  
Surface Areas ◽  
Lower Temperature

A novel olivary or petal-like RuO2 material with large surface area was successfully synthesized by surfactant-assisted homogeneous precipitation method using urea and dodecyl sulfate as the source reagent. The surface morphology, structural, and electrochemical properties of as-synthesized RuO2 materials were characterized by x-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), Cyclic voltammetry (CV), N2 adsorption–desorption isotherms and polarization curve for oxygen evolution reaction (OER). It was found that the morphology and crystalline structures and electrochemical properties of as-synthesized RuO2 materials were strongly dependent on the calcining temperature. The ruthenium-surfactant mesophase with mesoporous structure transformed from network to regular olivary or petal-like RuO2 materials and remaining partial mesoporous character after calcination at lower temperature (i.e., 300 and 400 °C). However, the mesophase transformed into RuO2 agglomeration consisted of nanosized particles after calcination at 650 °C, which may be attributed to complete deorganization and porous structure collapse of RuO2 materials. In addition, the as-synthesized RuO2 materials showed higher specific surface area and better electrochemical activities for oxygen evolution reaction compared with the RuO2 prepared without surfactant. The electrochemical activity of as-synthesized RuO2 material calcined at 400 °C is about 3 times than that of RuO2 prepared without surfactant for oxygen evolution reaction. This can be attributed to the porous structure and large surface area of as-synthesized RuO2 materials.

Oxygen Evolution Reaction on La1–xSrxCoO3Perovskites: A Combined Experimental and Theoretical Study of Their Structural, Electronic, and Electrochemical Properties

2015 ◽  
Vol 27 (22) ◽  
pp. 7662-7672 ◽  
Author(s):  
Xi Cheng ◽  
Emiliana Fabbri ◽  
Maarten Nachtegaal ◽  
Ivano E. Castelli ◽  
Mario El Kazzi ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Theoretical Study

Oxygen Evolution Nickel Hydroxide Electrodes in a Ni-MH Battery Prototype

2012 ◽  
Vol 15 (4) ◽  
pp. 277-282 ◽  
Author(s):  
M.D. Becker ◽  
D.J. Cuscueta ◽  
H.R. Salva ◽  
F. Rodriguez Nieto ◽  
A.A. Ghilarducci ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Oxygen Evolution ◽  
Nickel Hydroxide ◽  
Oxygen Evolution Reaction ◽  
Active Material ◽  
Electrochemical Characteristics ◽  
Electrochemical Parameters ◽  
Xrd Patterns ◽  
Charging Efficiency ◽  
Mh Battery

The effect of cobalt in both alpha and beta phases on the oxygen evolution of nickel hydroxide was studied. The electrochemical properties of the oxygen evolution reaction on the positive nickel hydroxide electrodes were studied under conditions similar to those of a commercial Ni-MH battery. The presence of different kinds of defects in the structure of the active material was determined by XRD methods distorted and asymmetric reflections in the XRD patterns. Both the morphology of the active material and the additives influence the oxygen evolution potential and the electrochemical characteristics. The experimental results showed that the optimized prototype used in this work is suitable for evaluating several electrochemical parameters. It was shown that the electrode without cobalt exhibited the charging efficiency was 94% and those with cobalt exhibited a charging of 98%.

Interfacial Electronic Structure Modulation Enables CoMoOx/CoOx/RuOx an Advanced Oxygen Evolution Electrocatalysis

2021 ◽  
Author(s):  
Cheng Wang ◽  
Hongyuan Shang ◽  
Yuan Wang ◽  
Hui Xu ◽  
Jie Li ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Electrochemical Properties ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Interfacial Electronic Structure ◽  
Structure Modulation ◽  
Promising Avenue

Interface and electronic structure modulation are widely recognized as promising avenue for optimizing the physiochemical and electrochemical properties of nanomaterials, which are crucial to improving the electrocatalytic oxygen evolution reaction...

An Fe-doped NiTe bulk crystal as a robust catalyst for the electrochemical oxygen evolution reaction

2019 ◽  
Vol 55 (63) ◽  
pp. 9347-9350 ◽  
Author(s):  
Lei Zhong ◽  
Yufei Bao ◽  
Xu Yu ◽  
Ligang Feng
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Bulk Crystal ◽  
Stable Performance ◽  
Electrochemical Oxygen

An Fe doped NiTe bulk crystal was demonstrated to exhibit an extremely active and stable performance for the electrochemical oxygen evolution reaction.

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