Flexible Active-Site Engineering of Monometallic Co-Layered Double Hydroxides for Achieving High-Performance Bifunctional Electrocatalyst toward Oxygen Evolution and H2O2 Reduction

2020 ◽  
Vol 12 (11) ◽  
pp. 12919-12929 ◽  
Author(s):  
Qian Chen ◽  
Rong Ding ◽  
Huan Liu ◽  
Lingxi Zhou ◽  
Yi Wang ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Layered Double Hydroxides ◽  
Active Site ◽  
High Performance ◽  
Bifunctional Electrocatalyst ◽  
H2o2 Reduction ◽  
Double Hydroxides

Phosphorus oxoanion-intercalated layered double hydroxides for high-performance oxygen evolution

Nano Research ◽  
2017 ◽  
Vol 10 (5) ◽  
pp. 1732-1739 ◽  
Author(s):  
Ma Luo ◽  
Zhao Cai ◽  
Cheng Wang ◽  
Yongmin Bi ◽  
Li Qian ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Layered Double Hydroxides ◽  
High Performance ◽  
Double Hydroxides

scholarly journals Polyoxometallic chemistry towards all-in-one layered double hydroxides for boosting oxygen evolution electrocatalysis

2021 ◽  
Author(s):  
Zhengyang Cai ◽  
Ping Wang ◽  
Ya Yan ◽  
Jiangwei Zhang ◽  
Xianying Wang
Keyword(s):  
Oxygen Evolution ◽  
Layered Double Hydroxides ◽  
High Performance ◽  
Large Scale ◽  
Low Cost ◽  
Theoretical Data ◽  
Water Electrolysis ◽  
Active Species ◽  
Nickel Iron ◽  
Double Hydroxides

Abstract Nickel-iron based layered double hydroxides (NiFe LDH) have attracted tremendous research and industrial interests for oxygen evolution reaction electrocatalysis (OER). However, methodologies on simultaneous multi-regulations remain scarce. Herein, we report a versatile polyoxometallic acids (POMs) etching approach for ingeniously designing NiFe LDH, including morphological nanolayers tailoring, reconfiguration of Fe3+ and α-Ni(OH)2 active species, creating multiple vacancies of Ni, Fe and O and manufacturing interlayered POM polyanionic clusters as surface kinetic accelerators. Our experimental and theoretical data reveal that the key influencing factors are simultaneously controlled, resulting in synergistical enhancement with electrocatalytic OER activity of η10 = 206 mV, stability (negligible change of η500 for 24 h), and turnover frequency value (TOFFe, mol) of 2.03 s− 1. To elucidate the evolution, we derive an empirical formula to quantitatively identifying the key performance-determining factors, coinciding with the work and most of literature data. The expression offers an opportunity for first and fast reliability on materials screening. Moreover, the electrocatalyst is further produced on a large scale with low cost and high performance, demonstrating its feasibility of promising configuration of NiFe LDH-PMo12(+) ‖ Ni@NiFe LDH(-) for practical anion-exchange membrane (AEM)-electrode-stack cells water electrolysis.

Fabrication of (Ni,Co)0.85Se nanosheet arrays derived from layered double hydroxides toward largely enhanced overall water splitting

2018 ◽  
Vol 6 (17) ◽  
pp. 7585-7591 ◽  
Author(s):  
Kaiming Xiao ◽  
Lei Zhou ◽  
Mingfei Shao ◽  
Min Wei
Keyword(s):  
Water Splitting ◽  
Layered Double Hydroxides ◽  
High Performance ◽  
Bifunctional Electrocatalyst ◽  
Overall Water Splitting ◽  
Nanosheet Arrays ◽  
Double Hydroxides

A high-performance and durable bifunctional electrocatalyst based on (Ni,Co)0.85Se nanosheet arrays toward overall water splitting.

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