Hybrids of iridium–cobalt phosphates as a highly efficient electrocatalyst for the oxygen evolution reaction in neutral solution

2019 ◽  
Vol 55 (20) ◽  
pp. 3000-3003 ◽  
Author(s):  
Zhaoying Wang ◽  
Zheng Lin ◽  
Peng Diao

Iridium–cobalt phosphates act as highly efficient electrocatalysts for water oxidation with an intrinsic activity even superior to iridium phosphate.

2014 ◽  
Vol 2 (30) ◽  
pp. 11799-11806 ◽  
Author(s):  
Xuemei Zhou ◽  
Zhaoming Xia ◽  
Zhiyun Zhang ◽  
Yuanyuan Ma ◽  
Yongquan Qu

One-step hydrothermal synthesis of ultra-thin β-Ni(OH)2 nanoplates (1.5–3.0 nm thickness) and their composite with multi-walled carbon nanotubes in the absence of surfactants function as highly efficient and stable electrocatalysts for oxygen evolution reaction.


RSC Advances ◽  
2015 ◽  
Vol 5 (12) ◽  
pp. 8882-8886 ◽  
Author(s):  
Yaohang Gu ◽  
Dandan Jia ◽  
Youshun Peng ◽  
Shitao Song ◽  
Yongguang Zhao ◽  
...  

Fabricating a delicate structure for water oxidation is critical for developing highly efficient electrocatalysts, which hold significant promise for energy conversion devices.


Research ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-15
Author(s):  
Jia-Wei Zhao ◽  
Cheng-Fei Li ◽  
Zi-Xiao Shi ◽  
Jie-Lun Guan ◽  
Gao-Ren Li

In the process of oxygen evolution reaction (OER) on perovskite, it is of great significance to accelerate the hindered lattice oxygen oxidation process to promote the slow kinetics of water oxidation. In this paper, a facile surface modification strategy of nanometer-scale iron oxyhydroxide (FeOOH) clusters depositing on the surface of LaNiO3 (LNO) perovskite is reported, and it can obviously promote hydroxyl adsorption and weaken Ni-O bond of LNO. The above relevant evidences are well demonstrated by the experimental results and DFT calculations. The excellent hydroxyl adsorption ability of FeOOH-LaNiO3 (Fe-LNO) can obviously optimize OH- filling barriers to promote lattice oxygen-participated OER (LOER), and the weakened Ni-O bond of LNO perovskite can obviously reduce the reaction barrier of the lattice oxygen participation mechanism (LOM). Based on the above synergistic catalysis effect, the Fe-LNO catalyst exhibits a maximum factor of 5 catalytic activity increases for OER relative to the pristine perovskite and demonstrates the fast reaction kinetics (low Tafel slope of 42 mV dec-1) and superior intrinsic activity (TOFs of ~40 O2 S-1 at 1.60 V vs. RHE).


2018 ◽  
Vol 42 (9) ◽  
pp. 7254-7261 ◽  
Author(s):  
Haixia Zhang ◽  
Jianfeng Zheng ◽  
Yuguang Chao ◽  
Kangming Zhang ◽  
Zhenping Zhu

FeCoMo nanosheets, as a highly efficient, cost-effective and stable electrocatalyst for the oxygen evolution reaction, significantly lower the overpotential and cost.


2020 ◽  
Vol 8 (44) ◽  
pp. 23637-23644
Author(s):  
Liang Yan ◽  
Xuanwei Chen ◽  
Xiaojun Liu ◽  
Liping Chen ◽  
Bing Zhang

A novel VOOH/Ti3C2Tx MXene heterostructure was synthesized; it delivered enhanced electrocatalytic performance for the hydrogen evolution reaction and the oxygen evolution reaction.


Nanoscale ◽  
2019 ◽  
Vol 11 (41) ◽  
pp. 19579-19585 ◽  
Author(s):  
Yujie Han ◽  
Zhijun Zhu ◽  
Liang Huang ◽  
Yujing Guo ◽  
Yanling Zhai ◽  
...  

Polydopamine functionalized cobalt-doped lanthanum nickelate perovskite nanorods for with high intrinsic activity for electrochemical oxygen evolution reaction.


2021 ◽  
Author(s):  
Lin Tang ◽  
Xiaoli Jiang ◽  
Qiaoji Zheng ◽  
Dunmin Lin

The development of economical and efficient oxygen evolution reaction (OER) catalyst plays an important part in electrochemical water oxidation, and it has been known that the electrocatalytic performance of the...


Author(s):  
Shuya Zhao ◽  
Yurui Xue ◽  
Zhongqiang Wang ◽  
Zhiqiang Zheng ◽  
Xiaoyu Luan ◽  
...  

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


Author(s):  
Zhikai Shi ◽  
Zebin Yu ◽  
Ronghua Jiang ◽  
Jun Huang ◽  
Yanping Hou ◽  
...  

The oxygen evolution reaction (OER) is an important half-reaction in the field of energy production. However, how effectively, simply, and greenly to prepare low-cost OER electrocatalysts remains a problem. Herein,...


Nanoscale ◽  
2021 ◽  
Author(s):  
Peng Wang ◽  
Feng Li ◽  
Xuefeng Long ◽  
Tong Wang ◽  
Huan Chai ◽  
...  

Surface modification by loading a water oxidation co-catalyst (WOC) is generally considered to be an efficient means to optimize the sluggish surface oxygen evolution reaction (OER) of hematite photoanode for...


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