Easily prepared, high activity Ir–Ni oxide catalysts for water oxidation

AbstractSingle-atom catalysts (SACs) have attracted tremendous research interests in various energy-related fields because of their high activity, selectivity and 100% atom utilization. However, it is still a challenge to enhance the intrinsic and specific activity of SACs. Herein, we present an approach to fabricate a high surface distribution density of iridium (Ir) SAC on nickel-iron sulfide nanosheet arrays substrate (Ir1/NFS), which delivers a high water oxidation activity. The Ir1/NFS catalyst offers a low overpotential of ~170 mV at a current density of 10 mA cm−2 and a high turnover frequency of 9.85 s−1 at an overpotential of 300 mV in 1.0 M KOH solution. At the same time, the Ir1/NFS catalyst exhibits a high stability performance, reaching a lifespan up to 350 hours at a current density of 100 mA cm−2. First-principles calculations reveal that the electronic structures of Ir atoms are significantly regulated by the sulfide substrate, endowing an energetically favorable reaction pathway. This work represents a promising strategy to fabricate high surface distribution density single-atom catalysts with high activity and durability for electrochemical water splitting.

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Ultrathin amorphous cobalt–vanadium hydr(oxy)oxide catalysts for the oxygen evolution reaction

Energy & Environmental Science ◽

10.1039/c8ee00611c ◽

2018 ◽

Vol 11 (7) ◽

pp. 1736-1741 ◽

Cited By ~ 119

Author(s):

Juzhe Liu ◽

Yongfei Ji ◽

Jianwei Nai ◽

Xiaogang Niu ◽

Yi Luo ◽

...

Keyword(s):

Catalytic Activity ◽

Oxygen Evolution ◽

Oxygen Evolution Reaction ◽

Water Oxidation ◽

Oxide Catalysts ◽

Simple Strategy

A simple strategy to synthesize ultrathin, amorphous and alloyed structural cobalt–vanadium hydr(oxy)oxide catalysts with enhanced water oxidation catalytic activity.

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A cobalt-borate nanosheet array: an efficient and durable non-noble-metal electrocatalyst for water oxidation at near neutral pH

Journal of Materials Chemistry A ◽

10.1039/c7ta00982h ◽

2017 ◽

Vol 5 (16) ◽

pp. 7305-7308 ◽

Cited By ~ 55

Author(s):

Libin Yang ◽

Danni Liu ◽

Shuai Hao ◽

Rongmei Kong ◽

Abdullah M. Asiri ◽

...

Keyword(s):

High Activity ◽

Noble Metal ◽

Current Density ◽

Water Oxidation ◽

Catalytic Current ◽

Neutral Ph ◽

Nanosheet Array ◽

Ti Mesh ◽

Catalyst Electrode

As a durable catalyst electrode, a cobalt-borate nanosheet array on a Ti mesh shows high activity for water oxidation in 0.1 M K-Bi (pH: 9.2), achieving a geometrical catalytic current density of 10 mA cm−2 at an overpotential of 469 mV.

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Highly dispersed and disordered nickel–iron layered hydroxides and sulphides: robust and high-activity water oxidation catalysts

Sustainable Energy & Fuels ◽

10.1039/c8se00129d ◽

2018 ◽

Vol 2 (7) ◽

pp. 1561-1573 ◽

Cited By ~ 12

Author(s):

Manjunath Chatti ◽

Alexey M. Glushenkov ◽

Thomas Gengenbach ◽

Gregory P. Knowles ◽

Tiago C. Mendes ◽

...

Keyword(s):

Catalytic Activity ◽

Low Temperature ◽

High Activity ◽

Water Oxidation ◽

Microwave Assisted Synthesis ◽

Oxidation Catalysts ◽

Alkaline Water ◽

Nickel Iron ◽

Microwave Assisted ◽

Highly Dispersed

A rapid low-temperature microwave-assisted synthesis of nickel(iron) layered hydroxides and sulphides that exhibit robust catalytic activity for electrooxidation of alkaline water is introduced.

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Template-free synthesis of mesoporous manganese oxides with catalytic activity in the oxygen evolution reaction

Sustainable Energy & Fuels ◽

10.1039/c7se00086c ◽

2017 ◽

Vol 1 (4) ◽

pp. 780-788 ◽

Cited By ~ 18

Author(s):

Suoyuan Lian ◽

Michelle P. Browne ◽

Carlota Domínguez ◽

Serban N. Stamatin ◽

Hugo Nolan ◽

...

Keyword(s):

Catalytic Activity ◽

High Activity ◽

Oxygen Evolution ◽

Oxygen Evolution Reaction ◽

Water Oxidation ◽

Manganese Oxides ◽

Template Free ◽

Highly Porous

Solvothermally synthesised MnCO3 leads to template-free formation of highly porous, defect-rich MnO2 with high activity in water oxidation.

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The application of a nickel(ii) Schiff base complex in water oxidation: the importance of nanosized materials

Catalysis Science & Technology ◽

10.1039/c8cy00582f ◽

2018 ◽

Vol 8 (15) ◽

pp. 3954-3968 ◽

Cited By ~ 15

Author(s):

Hadi Feizi ◽

Farshad Shiri ◽

Robabeh Bagheri ◽

Jitendra Pal Singh ◽

Keun Hwa Chae ◽

...

Keyword(s):

Schiff Base ◽

Water Oxidation ◽

Schiff Base Complex ◽

Base Complex ◽

Nanosized Materials ◽

Ni Oxide

The role of Ni oxide in the electrocatalytic water oxidation of a nickel(ii) Schiff base (N,N′-bis (salicylidene) ethylenediamino nickel(ii)) is investigated.

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Limiting factors for photochemical charge separation in BiVO4/Co3O4, a highly active photocatalyst for water oxidation in sunlight

Journal of Materials Chemistry A ◽

10.1039/c4ta01654h ◽

2014 ◽

Vol 2 (24) ◽

pp. 9405-9411 ◽

Cited By ~ 93

Author(s):

Jiarui Wang ◽

Frank E. Osterloh

Keyword(s):

High Activity ◽

Water Oxidation ◽

Charge Separation ◽

Limiting Factors ◽

Electrocatalytic Properties ◽

Highly Active

The high activity of BiVO4/Co3O4 was attributed to the electrocatalytic properties of the Co3O4 cocatalyst and to the formation of a heterojunction at the BiVO4–Co3O4 interface.

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