Novel CuO–Cu2O redox-induced self-assembly of hierarchical NiOOH@CuO–Cu2O/Co(OH)2 nanocomposite for efficient oxygen evolution reaction

2020 ◽  
Vol 4 (2) ◽  
pp. 869-877
Author(s):  
Yawen Li ◽  
Guifang Li ◽  
Jialing Xu ◽  
Lishan Jia
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Self Assembly ◽  
Active Centers ◽  
Valence States

We designed well-defined architecture and controllable active centers with multiple valence states regulated by redox.

A Low Charge Transfer Resistance CuO Composite for Efficient Oxygen Evolution Reaction in Alkaline Media

2021 ◽  
Vol 21 (4) ◽  
pp. 2613-2620
Author(s):  
Abdul Qayoom Mugheri ◽  
Aneela Tahira ◽  
Umair Aftab ◽  
Muhammad Ishaq Abro ◽  
Adeel Liaquat Bhatti ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Porous Carbon ◽  
Oxygen Evolution Reaction ◽  
Carbon Material ◽  
Cupric Oxide ◽  
Alkaline Media ◽  
Porous Carbon Material ◽  
Active Centers ◽  
Hydrogen Electrode ◽  
Transfer Resistance

An efficient, simple, environment-friendly and inexpensive cupric oxide (CuO) electrocatalyst for oxygen evolution reaction (OER) is demonstrated. CuO is chemically deposited on the porous carbon material obtained from the dehydration of common sugar. The morphology of CuO on the porous carbon material is plate-like and monoclinic crystalline phase is confirmed by powder X-ray diffraction. The OER activity of CuO nanostructures is investigated in 1 M KOH aqueous solution. To date, the proposed electrocatalyst has the lowest possible potential of 1.49 V versus RHE (reversible hydrogen electrode) to achieve a current density of 20 mA/cm2 among the CuO based electrocatalysts and has Tafel slope of 115 mV dec-1. The electrocatalyst exhibits an excellent long-term stability for 6 hours along with significant durability. The enhanced catalytic active centers of CuO on the carbon material are due to the porous structure of carbon as well as strong coupling between CuO–C. The functionalization of metal oxides or other related nanostructured materials on porous carbon obtained from common sugar provides an opportunity for the development of efficient energy conversion and energy storage systems.

scholarly journals Self-assembly of Ni–Fe layered double hydroxide at room temperature for oxygen evolution reaction

2020 ◽  
Vol 6 ◽  
pp. 248-254
Author(s):  
Seong Hyun Kim ◽  
Yoo Sei Park ◽  
Chiho Kim ◽  
Il Yeong Kwon ◽  
Jooyoung Lee ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Layered Double Hydroxide ◽  
Oxygen Evolution Reaction ◽  
Self Assembly ◽  
Room Temperature ◽  
Double Hydroxide

scholarly journals Self-Assembly of Two-Dimensional Bimetallic Nickel–Cobalt Phosphate Nanoplates into One-Dimensional Porous Chainlike Architecture for Efficient Oxygen Evolution Reaction

2020 ◽  
Vol 32 (16) ◽  
pp. 7005-7018 ◽  
Author(s):  
Ni Luh Wulan Septiani ◽  
Yusuf Valentino Kaneti ◽  
Kresna Bondan Fathoni ◽  
Kenya Kani ◽  
Abeer Enaiet Allah ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Self Assembly ◽  
Two Dimensional ◽  
One Dimensional ◽  
Nickel Cobalt ◽  
Cobalt Phosphate

Two-dimensional bimetallic CoFe selenite via metal-ion assisted self-assembly for enhanced oxygen evolution reaction

2020 ◽  
Vol 44 (46) ◽  
pp. 20148-20154
Author(s):  
Ling-Li Zhou ◽  
Dong-Sheng Pan ◽  
Zheng-Han Guo ◽  
Jun-Ling Song
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Self Assembly ◽  
Metal Ion ◽  
Hydrothermal Condition ◽  
High Yield ◽  
Two Dimensional ◽  
Simple Metal ◽  
Assembly Strategy

A 2D CoFe selenite crystals was used as an efficient OER catalyst, which was obtained in a high yield via a simple metal-ion self-assembly strategy under hydrothermal condition.

scholarly journals Self-assembly growth of alloyed NiPt nanocrystals with holothuria-like shape for oxygen evolution reaction with enhanced catalytic activity

APL Materials ◽  
2016 ◽  
Vol 4 (1) ◽  
pp. 015702 ◽  
Author(s):  
Tao Ding ◽  
Wenliang Wang ◽  
Xiaoli Zhou ◽  
Li Zhang ◽  
Chunde Wang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Self Assembly

Two-dimensional graphdiyne analogue Co-coordinated porphyrin covalent organic framework nanosheets as a stable electrocatalyst for the oxygen evolution reaction

2019 ◽  
Vol 7 (10) ◽  
pp. 5575-5582 ◽  
Author(s):  
Hao Huang ◽  
Fumin Li ◽  
Ying Zhang ◽  
Yu Chen
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Catalytic Performance ◽  
Two Dimensional ◽  
Effective Strategy ◽  
Active Centers ◽  
Covalent Organic Framework ◽  
Organic Framework

Employing metalloporphyrin as monomer is an effective strategy to overcome the drawback of graphdiyne in electrocatalytic process. The Co–N4 active centers, expanded pores, and conjugated structure altogether endow the Co-PDY with excellent OER catalytic performance.

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