Safeguarding RuO2 phase against lattice oxygen oxidation during acidic water electrooxidation

2021 ◽  
Author(s):  
Haneul Jin ◽  
Songa Choi ◽  
Gi Joo Bang ◽  
Taehyun Kwon ◽  
Hee Soo Kim ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Lattice Oxygen ◽  
Initial Activity ◽  
Acidic Water ◽  
Oxygen Oxidation

Defective RuO2 possesses excellent initial activity toward oxygen evolution reaction in acidic water electrooxidation due to the involvement of lattice oxygens, which, however, is the very reason for an accelerated...

scholarly journals Boosting Lattice Oxygen Oxidation of Perovskite to Efficiently Catalyze Oxygen Evolution Reaction by FeOOH Decoration

Research ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-15
Author(s):  
Jia-Wei Zhao ◽  
Cheng-Fei Li ◽  
Zi-Xiao Shi ◽  
Jie-Lun Guan ◽  
Gao-Ren Li
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Lattice Oxygen ◽  
Intrinsic Activity ◽  
Fast Reaction ◽  
Synergistic Catalysis ◽  
Slow Kinetics ◽  
Oxygen Oxidation ◽  
Kinetics Of

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).

Lattice Oxygen Redox Chemistry in Solid-State Electrocatalysts for Water Oxidation

2021 ◽  
Author(s):  
Ning Zhang ◽  
Yang Chai
Keyword(s):  
Solid State ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Water Electrolysis ◽  
Redox Chemistry ◽  
Lattice Oxygen ◽  
Vital Importance ◽  
Production Of Hydrogen ◽  
Overall Efficiency

Fundamental understandings towards oxygen evolution reaction (OER) are of vital importance as it dominates the overall efficiency of water electrolysis – a compelling technique for sustainable production of hydrogen feedstock....

scholarly journals Oxygen Evolution Reaction: Boosting Oxygen Evolution Reaction by Creating Both Metal Ion and Lattice‐Oxygen Active Sites in a Complex Oxide (Adv. Mater. 1/2020)

2020 ◽  
Vol 32 (1) ◽  
pp. 2070001
Author(s):  
Yinlong Zhu ◽  
Hassan A. Tahini ◽  
Zhiwei Hu ◽  
Zhi‐Gang Chen ◽  
Wei Zhou ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Metal Ion ◽  
Active Sites ◽  
Complex Oxide ◽  
Lattice Oxygen

scholarly journals Dynamic Lattice Oxygen Participation on Perovskite LaNiO3 during Oxygen Evolution Reaction

2020 ◽  
Vol 124 (28) ◽  
pp. 15386-15390
Author(s):  
Jishan Liu ◽  
Endong Jia ◽  
Kelsey A. Stoerzinger ◽  
Le Wang ◽  
Yining Wang ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Lattice Oxygen

scholarly journals Role of Lattice Oxygen Participation in Understanding Trends in the Oxygen Evolution Reaction on Perovskites

ACS Catalysis ◽  
2018 ◽  
Vol 8 (5) ◽  
pp. 4628-4636 ◽  
Author(s):  
Jong Suk Yoo ◽  
Xi Rong ◽  
Yusu Liu ◽  
Alexie M. Kolpak
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Lattice Oxygen
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