CoP2nanoparticles on reduced graphene oxide sheets as a super-efficient bifunctional electrocatalyst for full water splitting

2016 ◽  
Vol 4 (13) ◽  
pp. 4686-4690 ◽  
Author(s):  
Jianmei Wang ◽  
Wenrong Yang ◽  
Jingquan Liu
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Water Splitting ◽  
Bifunctional Electrocatalyst ◽  
Graphene Oxide Sheet ◽  
Reduced Graphene ◽  
Graphene Oxide Sheets

CoP2nanoparticles decorated reduced graphene oxide sheet (CoP2/RGO) acts as a super-efficient bifunctional electrocatalyst for full water splitting.

Tuning the cationic ratio of Fe1CoxNiyP integrated on Vertically aligned reduced graphene oxide array via electroless plating as efficient self-supported bifunctional electrocatalyst for water splitting

2021 ◽  
pp. 1-33
Author(s):  
Kaiming Guo ◽  
Firdoz Shaik ◽  
Jine Yang ◽  
Bin Jiang
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Water Splitting ◽  
Electroless Plating ◽  
Cost Effective ◽  
Bifunctional Electrocatalyst ◽  
Reduced Graphene ◽  
Wide Ph Range ◽  
Vertically Aligned ◽  
Ph Range

Abstract Water splitting is considered as a potential sustainable and green technology for producing mass hydrogen and oxygen. A cost-effective self-supported stable electrocatalyst with excellent electrocatalytic performance in a wide pH range is greatly required for water splitting. This work reports on the synthesis and anchoring of Fe1CoxNiyP nanoparticles on vertically aligned reduced graphene oxide array (VrGO) via electroless plating. The catalytic activity of Fe1CoxNiyP nanoparticles is tuned finely by tailoring the cationic ratio of Co and Ni. Fe1Co2Ni1P/VrGO exhibits the lowest overpotential (58 and 110 mV) at 10 mA cm−2 and lowest tafel slope (31 and 33 mV dec−1) for hydrogen evolution reaction in 1.0 M KOH and 0.5 M H2SO4 respectively. Fe1Co1Ni2P/VrGO exhibits the lowest overpotential (173 mV) at 10 mA cm−2 with lowest tafel slope (47 mV dec-1) for oxygen evolution reaction. The enhanced performance of the electrocatalyst is attributed to improved electrical conductivity, synergistic effects and beneficial electronic states caused by the appropriate atomic ratio of Co and Ni in the bifunctional electrocatalyst. This study helps to explore the effect of variable cationic ratio in the cost-effective ternary iron group metal phosphides electrocatalysts to achieve enhanced electrocatalytic performance for water splitting in a wide pH range.

Novel cobalt quantum dot/graphene nanocomposites as highly efficient electrocatalysts for water splitting

Nanoscale ◽  
2016 ◽  
Vol 8 (3) ◽  
pp. 1485-1492 ◽  
Author(s):  
Maduraiveeran Govindhan ◽  
Brennan Mao ◽  
Aicheng Chen
Keyword(s):  
Quantum Dots ◽  
Graphene Oxide ◽  
Quantum Dot ◽  
High Activity ◽  
Reduced Graphene Oxide ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Graphene Nanocomposites ◽  
Reduced Graphene ◽  
Graphene Oxide Sheets

A non-noble metal based electrocatalyst comprised of Co quantum dots and reduced graphene oxide sheets exhibits high activity and stability for oxygen evolution.

Defective crystalline molybdenum phosphides as bifunctional catalysts for hydrogen evolution and hydrazine oxidation reactions during water splitting

2019 ◽  
Vol 6 (10) ◽  
pp. 2686-2695 ◽  
Author(s):  
Yan Gao ◽  
Qiang Wang ◽  
Ting He ◽  
Jun-Ye Zhang ◽  
Hao Sun ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Bifunctional Catalysts ◽  
Oxidation Reactions ◽  
Bifunctional Electrocatalyst ◽  
Hydrazine Oxidation ◽  
Reduced Graphene ◽  
Molybdenum Phosphide

Defect-rich crystalline molybdenum phosphide nanoparticles anchored on reduced graphene oxide serve as an efficient bifunctional electrocatalyst for both hydrogen evolution and hydrazine oxidation reactions.

Fe, Al-co-doped NiSe2 nanoparticles on reduced graphene oxide as an efficient bifunctional electrocatalyst for overall water splitting

Nanoscale ◽  
2020 ◽  
Vol 12 (25) ◽  
pp. 13680-13687 ◽  
Author(s):  
Lulu Chen ◽  
Haeseong Jang ◽  
Min Gyu Kim ◽  
Qing Qin ◽  
Xien Liu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Water Splitting ◽  
Doping Effect ◽  
Bifunctional Electrocatalyst ◽  
Co Doping ◽  
Overall Water Splitting ◽  
Enhanced Activity ◽  
Reduced Graphene ◽  
Co Doped

A Fe, Al-codoped NiSe2 on rGO catalyst exhibits the enhanced activity and durability toward HER and OER, due to the synergistic contribution of the dual-cation co-doping effect and the more defects created by the Al leaching.

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