High catalytic performance of nickel foam supported Co2P-Ni2P for overall water splitting and its structural evolutions during hydrogen/oxygen evolution reactions in alkaline solutions

Deng, Binglu; Zhou, Lingshan; Jiang, Zhongqing; Jiang, Zhong‐Jie

doi:10.1016/j.jcat.2019.03.038

Cited by 92 publications

(32 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…19,20 The utilization of not only noble metal oxides such as IrO 2 and RuO 2 21,22 but also other transition metal compounds as promising OER catalysts 23,24 has shown undoubtedly enhanced performance in the assembly of the overall water splitting devices. 25,26 These electrocatalysts are mostly prepared on 2D planar 27 and 3D substrate structures 28−30 especially glassy carbon 31 and nickel foam/carbon cloth, 32−34 respectively, thereby forming substrate-assisted catalysts. 35,36 However, despite the successful fabrication of these catalysts on 2D and 3D structures, the tendency of the active materials peeling off from the substrates remains an unquestionable challenge, 33,37−39 which should be urgently addressed.…”

Section: Introductionmentioning

confidence: 99%

A Simple and Scalable Approach To Remarkably Boost the Overall Water Splitting Activity of Stainless Steel Electrocatalysts

Gao

Xiong

et al. 2019

ACS Omega

View full text Add to dashboard Cite

The stainless steel mesh (SSM) has received growing consideration as an electrocatalyst for efficient hydrogen and oxygen evolution reactions. Recently, the application of SSM as an oxygen evolution reaction (OER) electrocatalyst has been more promising, while its hydrogen evolution reaction (HER) catalytic activity is very low, which definitely affects its overall water splitting activity. Herein, a simple chemical bath deposition (CBD) method followed by phosphorization is employed to significantly boost the overall water splitting performance of SSM. The CBD method could allow the voids between the SSM fibers to be filled with Ni and P. Electrocatalytic studies show that the CBD-treated and phosphorized stainless steel (denoted SSM-Ni-P) exhibits an HER overpotential of 149 mV, while the phosphorization-free CBD-treated SSM (denoted as SSM-Ni) delivers an OER overpotential of 223 mV, both at a current density of 10 mA cm–2. An asymmetric alkaline electrolyzer assembled based on the SSM-Ni-P cathode (HER) and SSM-Ni anode (OER) achieved an onset and 10 mA cm–2 current densities at an overall potential of 1.62 V, granting more prospects for the application of inexpensive and highly active electrocatalysts for electrocatalytic water splitting reactions.

show abstract

Section: Introductionmentioning

confidence: 99%

A Simple and Scalable Approach To Remarkably Boost the Overall Water Splitting Activity of Stainless Steel Electrocatalysts

Gao

Xiong

et al. 2019

ACS Omega

View full text Add to dashboard Cite

show abstract

“…For instance, Xu et al 41 reported a series of metal phosphidesbased pre-catalysts by phosphidation process with different metal components (M = Fe, Co, Ni). The OER 42,67,[109][110][111][112] Metal phosphates have emerged as promising electrocatalysts owing to their structural stability. Previous studies indicate that phosphates group can facilitate the oxidation of metal atoms and act as proton acceptors to make the catalysts more favorable for water adsorption and oxidation.…”

Section: Metal Phosphides and Phosphatesmentioning

confidence: 99%

“…The OER activities followed the order of FeCoNiP > CoNiP > FeNiP > FeCoP > CoP, where the intrinsic OER activity was related to the number of transition metal species. Besides, some dual‐doped metal phosphide catalysts such as Fe‐doped CoP, Co 2 P‐Ni 2 P, Fe‐doped Ni 2 P, Mo‐doped Ni 2 P, and NiCoP have been reported as bifunctional catalysts with exceptional OER and HER activity 42,67,109‐112 …”

Section: Precious‐metal‐free Electrocatalystsmentioning

confidence: 99%

Design and operando/in situ characterization of precious‐metal‐free electrocatalysts for alkaline water splitting

et al. 2020

View full text Add to dashboard Cite

Electrochemical water splitting has attracted considerable attention for the production of hydrogen fuel by using renewable energy resources. However, the sluggish reaction kinetics make it essential to explore precious-metal-free electrocatalysts with superior activity and long-term stability. Tremendous efforts have been made in exploring electrocatalysts to reduce the energy barriers and improve catalytic efficiency. This review summarizes different categories of precious-metal-free electrocatalysts developed in the past 5 years for alkaline water splitting. The design strategies for optimizing the electronic and geometric structures of electrocatalysts with enhanced catalytic performance are discussed, including composition modulation, defect engineering, and structural engineering. Particularly, the advancement of operando/in situ characterization techniques toward the understanding of structural evolution, reaction intermediates, and active sites during the water splitting process are summarized. Finally, current challenges and future perspectives toward achieving efficient catalyst systems for industrial applications are proposed. This review will provide insights and strategies to the design of precious-metalfree electrocatalysts and inspire future research in alkaline water splitting.

show abstract

“…Therefore, researchers are exploring alternative catalysts which could be economical, efficient, and durable like the transition metal sulphides or core shell bifunctional TMS catalyst however they are still to overcome challenges they face such as being unstable in an oxidizing environment or lack of theoretical calculation to support the mechanism 12‐17 . Similarly, literature abounds with reports of doped Co oxides/hydroxides/phosphides as catalysts, but Co is a toxic metal 18‐21 . In this pursuit, researchers have investigated non‐noble metal‐based catalysts for efficient, robust, and sustainable electrochemical water splitting 22‐25 .…”

Section: Introductionmentioning

confidence: 99%

“…[12][13][14][15][16][17] Similarly, literature abounds with reports of doped Co oxides/hydroxides/phosphides as catalysts, but Co is a toxic metal. [18][19][20][21] In this pursuit, researchers have investigated non-noble metal-based catalysts for efficient, robust, and sustainable electrochemical water splitting. [22][23][24][25] Both HER and OER are sluggish reactions and more so in acidic medium.…”

Section: Introductionmentioning

confidence: 99%

In‐situ formation of an efficient trimetallic (CuZnAg) electrocatalyst for water oxidation

et al. 2020

View full text Add to dashboard Cite

Summary There is a need to develop highly efficient electrocatalysts based on non‐noble metals which can be used for water splitting. Thus, to realize an acceptable oxygen evolution reaction (OER) performance, a combination of non‐noble metals was used to improve the architecture and conducive to a facile OER. For this purpose, a binder‐free and non‐noble metal‐based trimetallic (CuZnAg) composite OER a electrocatalyst was grown at the surface of fluorine‐doped tin oxide by a facile one step in‐situ electrodeposition method using chronoamperometry. The formation and performance of the catalyst were ensured from XRD, SEM, EDX, chronoamperometry, and linear scan voltammetry. The trimetallic composite showed good results toward OER in 1 M KOH electrolyte at pH 13 at a current density of 1 mA/cm2 with an overpotential of 303 mV at a scan rate of 10 mV/sec. The results revealed robust electrochemical durability under alkaline conditions and the electrocatalyst holds great promise for OER.

show abstract

High catalytic performance of nickel foam supported Co2P-Ni2P for overall water splitting and its structural evolutions during hydrogen/oxygen evolution reactions in alkaline solutions

Cited by 92 publications

References 49 publications

A Simple and Scalable Approach To Remarkably Boost the Overall Water Splitting Activity of Stainless Steel Electrocatalysts

A Simple and Scalable Approach To Remarkably Boost the Overall Water Splitting Activity of Stainless Steel Electrocatalysts

Design and operando/in situ characterization of precious‐metal‐free electrocatalysts for alkaline water splitting

In‐situ formation of an efficient trimetallic (CuZnAg) electrocatalyst for water oxidation

Contact Info

Product

Resources

About