Kinetically Controlled, Scalable Synthesis of γ‐FeOOH Nanosheet Arrays on Nickel Foam toward Efficient Oxygen Evolution: The Key Role of In‐Situ‐Generated γ‐NiOOH

2021 ◽  
Vol 33 (11) ◽  
pp. 2005587
Author(s):  
Ke Wang ◽  
Hongfang Du ◽  
Song He ◽  
Lei Liu ◽  
Kai Yang ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Nickel Foam ◽  
Kinetically Controlled ◽  
Nanosheet Arrays ◽  
Scalable Synthesis

In situ growth of Fe and Nb co-doped β-Ni(OH)2 nanosheet arrays on nickel foam for an efficient oxygen evolution reaction

2020 ◽  
Vol 7 (18) ◽  
pp. 3465-3474
Author(s):  
Junjie Pan ◽  
Shaoyun Hao ◽  
Xingwang Zhang ◽  
Rongxin Huang
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Nickel Foam ◽  
In Situ Growth ◽  
Nanosheet Arrays ◽  
Co Doped

Fe, Nb co-doped β-Ni(OH)2 electrode exhibited excellent OER performance with an overpotential of 294 mV at 100 mA cm−2.

Rapid in situ growth of β-Ni(OH)2 nanosheet arrays on nickel foam as an integrated electrode for supercapacitors exhibiting high energy density

2020 ◽  
Vol 49 (15) ◽  
pp. 4956-4966 ◽  
Author(s):  
Jingbo Li ◽  
Yu Liu ◽  
Wei Cao ◽  
Nan Chen
Keyword(s):  
Energy Density ◽  
High Performance ◽  
Nickel Foam ◽  
High Energy ◽  
High Energy Density ◽  
In Situ Growth ◽  
Nanosheet Arrays

A rapid in situ method was employed to synthesize the β-Ni(OH)2@NF integrated electrode for a high performance ASC device.

CaMoO4 nanosheet arrays for efficient and durable water oxidation electrocatalysis under alkaline conditions

2018 ◽  
Vol 54 (40) ◽  
pp. 5066-5069 ◽  
Author(s):  
Ying Gou ◽  
Qin Liu ◽  
Xifeng Shi ◽  
Abdullah M. Asiri ◽  
Jianming Hu ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Nickel Foam ◽  
Alkaline Water ◽  
Nanosheet Arrays ◽  
Alkaline Conditions ◽  
Catalyst Electrode

CaMoO4 nanosheet arrays grown in situ on nickel foam (CaMoO4/NF) act as a superior 3D catalyst electrode for alkaline water oxidation with high long-term durability.

scholarly journals Influence of Chemical Operation on the Electrocatalytic Activity of Ba0.5Sr0.5Co0.8Fe0.2O3−δ for the Oxygen Evolution Reaction

2021 ◽  
Author(s):  
Yuta Inoue ◽  
Yuto Miyahara ◽  
Kohei Miyazaki ◽  
Yasuyuki Kondo ◽  
Yuko Yokoyama ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Alkaline Solution ◽  
Oxygen Evolution Reaction ◽  
Time Course ◽  
Potential Cycling ◽  
Leaching Behavior ◽  
Fundamental Understanding ◽  
A Site

Abstract Ba0.5Sr0.5Co0.8Fe0.2O3−δ (BSCF) is a promising electrocatalyst for the oxygen evolution reaction (OER) in alkaline solution. The OER activities of BSCF are gradually enhanced by prolonging the duration of electrochemical operation at OER potentials, but the underlying cause is not fully understood. In this study, we investigated the role of chemical operation, equivalent to immersion in alkaline solution, in the time-course of OER enhancement of BSCF. Interestingly, the time-course OER enhancement of BSCF was promoted not only by electrochemical operation, which corresponds to potential cycling in the OER region, but also by chemical operation. In situ Raman measurements clarified that chemical operation had a lower rate of surface amorphization than electrochemical operation. On the other hand, the leaching behavior of A-site cations was comparable between chemical and electrochemical operations. Since the OER activity of BSCF was stabilized by saturating the electrolyte with Ba2+, “chemical” A-site leaching was key to inducing the time-course OER enhancement on perovskite electrocatalysts. Based on these results, we provide a fundamental understanding of the role of chemical operation in the OER properties of perovskites.

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