A NiCo LDH nanosheet array on graphite felt: an efficient 3D electrocatalyst for the oxygen evolution reaction in alkaline media

Wang, Hongzhi; Zhang, Longcheng; Yue, Luchao; Deng, Biao; Cao, Yang; Liu, Qian; Luo, Yonglan; Lu, Siyu; Zheng, Baozhan; Sun, Xuping

doi:10.1039/d1qi00428j

Cited by 187 publications

(82 citation statements)

References 39 publications

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“…However, its application is greatly hindered by the sluggish anodic oxygen evolution reaction (OER), which involves more complex multistep electron transfer steps as well as oxygen-oxygen bond formation compared with the cathodic hydrogen evolution reaction (HER) [2,3]. Although noble metalbased catalysts with high activity are regarded as the benchmark catalysts for OER, their scarcity and high cost greatly impede prevailing implementation, particularly in industrial mass production [4][5][6]. In this regard, it is highly urgent but challenging to develop cost-effective and efficient non-noble metal-based alternatives for OER.…”

Section: Introductionmentioning

confidence: 99%

Electronic modulation of Ni2P through anion and cation substitution toward highly efficient oxygen evolution

Zhang

Shen

et al. 2022

Sci. China Mater.

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Rationally designed oxygen evolution reaction (OER) catalysts with structural and compositional superiorities are essential for energy-related electrocatalytic techniques. Transition-metal phosphides have been used as promising electrocatalysts for OER. Incorporating heteroatoms into the lattice can induce lattice distortion and redistribution of electron density, consequently modifying the electronic structure and improving catalytic performance. Herein, Fe-and S-substituted Ni 2 P uniformly dispersed throughout porous carbon substrate (Ni-Fe-P-S@C) was rationally designed through transformation from the pre-synthesized NiFe-metal organic frameworks (NiFe-MOFs) by partial sulfurization and subsequent phosphorization process. Experimental results and density functional theory calculations showed that Fe and S incorporation could modulate the electronic structure of Ni 2 P and alter the adsorption free energies of reaction intermediates, contributing to admirable electrocatalytic activity and stability toward OER. Notably, the in-situ formed partially oxidized surface was vital to further improve the local environment. This proposed cation-and anion-substitution strategy will bring new inspiration to boost the electrocatalytic performance of transition-metal-based electrocatalysts for energy conversion applications.

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Section: Introductionmentioning

confidence: 99%

Electronic modulation of Ni2P through anion and cation substitution toward highly efficient oxygen evolution

Zhang

Shen

et al. 2022

Sci. China Mater.

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“…[1][2][3][4][5] Therefore, it is imperative to design advanced electrocatalysts to reduce the required OER overpotential to promote hydrogen production. In recent years, many non-noble metal catalysts represented by Fe, [6][7][8] Co, [9][10][11] and Ni [12][13][14][15] with an appropriate d-electron configuration have been all the rage due to their low cost and high reserves. Nevertheless, more research and optimization are pivotal to improve the OER activity and stability in order to realize the large-scale commercial application.…”

Section: Introductionmentioning

confidence: 99%

Triple captured iron by defect abundant NiO for efficient water oxidation

Zhou

Wang

Zhou

et al. 2022

Inorg. Chem. Front.

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“…In this context, transition metalbased catalysts are undoubtedly compelling candidates in view of their abundancy, cost effectiveness and great potential in the field of OER for electrolytic water splitting [11,12]. Among the multitude of transition metals which have been explored as OER electrocatalysts, Ni-based catalysts have been widely demonstrated to have noteworthy catalytic properties [13][14][15][16]. Several research studies have proved that alloying Ni with P provides a beneficial effect for the OER process [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Oxygen Evolution Reaction with Electroless Deposited Ni–P Catalytic Nanocoating

et al. 2021

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The low efficiency of water electrolysis mostly arises from the thermodynamic uphill oxygen evolution reaction. The efficiency can be greatly improved by rationally designing low-cost and efficient oxygen evolution anode materials. Herein, we report the synthesis of Ni–P alloys adopting a facile electroless plating method under mild conditions on nickel substrates. The relationship between the Ni–P properties and catalytic activity allowed us to define the best conditions for the electroless synthesis of highperformance Ni–P catalysts. Indeed, the electrochemical investigations indicated an increased catalytic response by reducing the thickness and Ni/P ratio in the alloy. Furthermore, the Ni–P catalysts with optimized size and composition deposited on Ni foam exposed more active sites for the oxygen evolution reaction, yielding a current density of 10 mA cm−2 at an overpotential as low as 335 mV, exhibiting charge transfer resistances of only a few ohms and a remarkable turnover frequency (TOF) value of 0.62 s−1 at 350 mV. The present study provides an advancement in the control of the electroless synthetic approach for the design and large-scale application of high-performance metal phosphide catalysts for electrochemical water splitting.

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A NiCo LDH nanosheet array on graphite felt: an efficient 3D electrocatalyst for the oxygen evolution reaction in alkaline media

Abstract: The development of efficient electrocatalysts from earth-abundant elements for the oxygen evolution reaction (OER) is highly desired. Here, we report the electrodeposition of NiCo layered double hydroxide nanosheet array on...

Cited by 187 publications

References 39 publications

Electronic modulation of Ni2P through anion and cation substitution toward highly efficient oxygen evolution

Electronic modulation of Ni2P through anion and cation substitution toward highly efficient oxygen evolution

Triple captured iron by defect abundant NiO for efficient water oxidation

Optimization of Oxygen Evolution Reaction with Electroless Deposited Ni–P Catalytic Nanocoating

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