Nanocomposites Based on CoSe2-Decorated FeSe2 Nanoparticles Supported on Reduced Graphene Oxide as High-Performance Electrocatalysts toward Oxygen Evolution Reaction

2018 ◽  
Vol 10 (22) ◽  
pp. 19258-19270 ◽  
Author(s):  
Guoxing Zhu ◽  
Xulan Xie ◽  
Xiaoyun Li ◽  
Yuanjun Liu ◽  
Xiaoping Shen ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
High Performance ◽  
Reduced Graphene

Cu2O–reduced graphene oxide composite as a high-performance electrocatalyst for oxygen evolution reaction in alkaline media

2021 ◽  
Author(s):  
Xiaomei Xu ◽  
Qingqing An ◽  
Hao Sun ◽  
Yongchun Wang ◽  
Wenhui Shang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Ethylene Glycol ◽  
Reduced Graphene Oxide ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
High Performance ◽  
Alkaline Media ◽  
Oxygen Generation ◽  
Oxide Composite ◽  
Reduced Graphene

Ethylene glycol was used as an inexpensive and nontoxic reducing agent to synthesize a Cu2O–reduced graphene oxide (Cu2O–rGO) composite. This material exhibited good electrocatalytic oxygen generation performance.

Co–Fe Bimetal Phosphate Composite Loaded on Reduced Graphene Oxide for Oxygen Evolution

NANO ◽  
2019 ◽  
Vol 14 (01) ◽  
pp. 1950003 ◽  
Author(s):  
Guoxing Zhu ◽  
Xulan Xie ◽  
Lisong Xiao ◽  
Xiaoyun Li ◽  
Xiaoping Shen ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
High Performance ◽  
Synergistic Effects ◽  
Water Electrolysis ◽  
Onset Potential ◽  
Reduced Graphene

Development of high-performance nonprecious metal-based catalysts for oxygen evolution reaction (OER) is crucial to improve the efficiency of water electrolysis and photoelectrochemical water splitting for harvesting and storage of solar energy. Herein, Co–Fe phosphates and their composites with reduced graphene oxide (rGO) were prepared by a simple hydrothermal method, which then acted as oxygen evolution reaction catalysts. In 1.0 M KOH aqueous solution, the as-obtained optimal composite, Co–Fe phosphate/rGO, can catalyze oxygen evolution reaction with a very sharp onset potential and a small over-potential of 338[Formula: see text]mV to achieve a current density of 10[Formula: see text]mA[Formula: see text]cm[Formula: see text]. It was found that in these Co–Fe phosphates, the optimal Co:Fe ratio is 0.75:0.25. The excellent electrocatalytic performance of the Co–Fe phosphate/rGO composite would benefit from the synergistic effects between Fe and Co species, as well as rGO substrate providing conductive channels. The formed Co–Fe phosphate/rGO electrocatalysts can be the promising replacement of precious metal-based catalysts for more practical and cost-efficient water splitting.

A novel strategy to boost the oxygen evolution reaction activity of NiFe-LDHs with in situ synthesized 3D porous reduced graphene oxide matrix as both the substrate and electronic carrier

2019 ◽  
Vol 43 (17) ◽  
pp. 6555-6562 ◽  
Author(s):  
Yanfang Gu ◽  
Yuanqiang Wang ◽  
Wei An ◽  
Yong Men ◽  
Yichuan Rui ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Stable Operating ◽  
Reduced Graphene ◽  
Oxide Matrix ◽  
Novel Strategy ◽  
Operating Potential

NiFe-LDHs anchored on a 3D rGO matrix achieved a small overpotential and a relatively stable operating potential.

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