scholarly journals Dual‐Phase Engineering: Dual‐Phase Engineering of Nickel Boride‐Hydroxide Nanoparticles toward High‐Performance Water Oxidation Electrocatalysts (Adv. Funct. Mater. 38/2020)

2020 ◽  
Vol 30 (38) ◽  
pp. 2070252
Author(s):  
Yu‐Rim Hong ◽  
Kang Min Kim ◽  
Jeong Ho Ryu ◽  
Sungwook Mhin ◽  
Jungin Kim ◽  
...  
Keyword(s):  
Water Oxidation ◽  
High Performance ◽  
Dual Phase ◽  
Nickel Boride ◽  
Phase Engineering

Dual‐Phase Engineering of Nickel Boride‐Hydroxide Nanoparticles toward High‐Performance Water Oxidation Electrocatalysts

2020 ◽  
Vol 30 (38) ◽  
pp. 2004330
Author(s):  
Yu‐Rim Hong ◽  
Kang Min Kim ◽  
Jeong Ho Ryu ◽  
Sungwook Mhin ◽  
Jungin Kim ◽  
...  
Keyword(s):  
Water Oxidation ◽  
High Performance ◽  
Dual Phase ◽  
Nickel Boride ◽  
Phase Engineering

Controllable growth of graphdiyne layered nanosheets for high-performance water oxidation

2021 ◽  
Author(s):  
Shuya Zhao ◽  
Yurui Xue ◽  
Zhongqiang Wang ◽  
Zhiqiang Zheng ◽  
Xiaoyu Luan ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
High Performance ◽  
Low Cost ◽  
Highly Active ◽  
Controllable Growth

Developing highly active, stable and low-cost electrocatalysts capable of an efficient oxygen evolution reaction (OER) is urgent and challenging.

High performance of homo-metallic tetracyanonicklate based coordination polymer towards water oxidation electrocatalysis

2021 ◽  
pp. 120510
Author(s):  
Shaista Ibrahim ◽  
Uzaira Rafique ◽  
Mohsin Saleem ◽  
Waheed Iqbal ◽  
Saghir Abbas ◽  
...  
Keyword(s):  
Coordination Polymer ◽  
Water Oxidation ◽  
High Performance

scholarly journals Mixed Metal-Antimony Oxide Nanocomposites: Low pH Water Oxidation Electrocatalysts with Outstanding Durability at Ambient and Elevated Temperatures

2021 ◽  
Author(s):  
Luke Sibimol ◽  
Manjunath Chatti ◽  
Asha Yadav ◽  
Brittany Kerr ◽  
Jiban Kangsabanik ◽  
...  
Keyword(s):  
Water Oxidation ◽  
High Performance ◽  
Density Functional ◽  
High Stability ◽  
Proton Exchange Membrane ◽  
Elevated Temperatures ◽  
Antimony Oxide ◽  
Proton Exchange ◽  
Efficient Production ◽  
Ambient Conditions

Proton-exchange membrane water electrolysers provide many advantages for the energy-efficient production of H<sub>2</sub>, but the current technology relies on high loadings of expensive iridium at the anodes, which are often unstable in operation. To address this, the present work scrutinises the properties of antimony-metal (Co, Mn, Ni, Fe, Ru) oxides synthesised as flat thin films by a solution-based method for the oxygen evolution reaction in 0.5 M H<sub>2</sub>SO<sub>4</sub>. Among the non-noble-metal catalysts, only cobalt-antimony and manganese-antimony oxides demonstrate high stability and reasonable activity under ambient conditions, but slowly lose activity at elevated temperatures. The ruthenium-antimony system is highly active, requiring an overpotential of 0.39 ± 0.03 and 0.34 ± 0.01 V to achieve 10 mA cm<sup>-2</sup> at 24 ± 2 and 80 °C, respectively, and remaining remarkably stable during one-week tests at 80 °C. The <i>S</i>-number for this catalyst is higher than that for the high-performance benchmark Ir-based systems. Density functional theory analysis and physical characterisation reveal that this high stability is supported by the enhanced hybridisation of the oxygen p- and metal d-orbitals induced by antimony, and can arise from two distinct structural scenarios: either formation of an antimonate phase, or nanoscale intermixing of metal and antimony oxide crystallites.

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