Nitrogen treatment generates tunable nanohybridization of Ni5P4 nanosheets with nickel hydr(oxy)oxides for efficient hydrogen production in alkaline, seawater and acidic media

Huang, Yongchao; Hu, Lei; Liu, Ran; Hu, Yuwen; Xiong, Tuzhi; Qiu, Weitao; Balogun, Muhammad‐Sadeeq; Pan, Anlian; Tong, Yexiang

doi:10.1016/j.apcatb.2019.03.037

Cited by 288 publications

(115 citation statements)

References 76 publications

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“…Highly efficient electrolytic processes such as hydrogen and oxygen evolution reactions are in high demand for the production of clean energy such as hydrogen fuel. 1−7 Compared to the mature hydrogen evolution reaction (HER) in the acidic medium, 8−10 oxygen evolution reactions (OER) have intrinsic advantages in alkaline media (4OH – → 2H 2 O + O 2 + 4e – ) in terms of easy production of oxygen molecules evolving from the electrocatalysts 11−14 and straightforward assembly of the overall alkaline electrolytic device. 15,16 However, the sluggishness in the reaction kinetics 17,18 usually leads to the unsatisfactory catalytic activity of the electrocatalysts during the overall water splitting process.…”

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

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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.

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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

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“…Amorphization has been demonstrated to be an effective alternative to optimize electrocatalysts. [153][154][155][156] For 2D metal (hydr)oxides electrocatalysts, extensive efforts have been dedicated to create amorphous structure. For instance, Tang et al have developed partially amorphous NiFe LDH nanosheets for robust OER electrocatalysis (233 mV@30 mA cm −2 ) and urea oxidation electrocatalysis (1.362 V@30 mA cm −2 ).…”

Section: Amorphizationmentioning

confidence: 99%

Electronic Structure Tuning of 2D Metal (Hydr)oxides Nanosheets for Electrocatalysis

Song

Liao

et al. 2020

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2D metal (hydr)oxide nanosheets have captured increasing interest in electrocatalytic applications aroused by their high specific surface areas, enriched chemically active sites, tunable physiochemical properties, etc. In particular, the electrocatalytic reactivities of materials greatly rely on their surface electronic structures. Generally speaking, the electronic structures of catalysts can be well adjusted via controlling their morphologies, defects, and heterostructures. In this Review, the latest advances in 2D metal (hydr)oxide nanosheets are first reviewed, including the applications in electrocatalysis for the hydrogen evolution reaction, oxygen reduction reaction, and oxygen evolution reaction. Then, the electronic structure–property relationships of 2D metal (hydr)oxide nanosheets are discussed to draw a picture of enhancing the electrocatalysis performances through a series of electronic structure tuning strategies. Finally, perspectives on the current challenges and the trends for the future design of 2D metal (hydr)oxide electrocatalysts with prominent catalytic activity are outlined. It is expected that this Review can shed some light on the design of next generation electrocatalysts.

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“…So, MoS 2 is usually combined with another component to stabilize the structure and optimize its catalytic activity. Transition metal phosphides also have been reported good performance for HER . Among them, Ni 2 P has received widespread attention due to the excellent electrical conductivity ability and electron‐regulating ability which facilitate the electron transfer and hydrogen reduction .…”

Section: Introductionmentioning

confidence: 99%

“…Transition metal phosphides also have been reported good performance for HER. [27,28] Among them, Ni 2 P has received widespread attention due to the excellent electrical conductivity ability and electron-regulating ability which facilitate the electron transfer and hydrogen reduction. [29] In order to further improve the HER performance of Ni 2 P, a series of studies on Ni 2 P nanostructures were expanded (e. g., nanoparticles [30] and nanowires [31] ).…”

Section: Introductionmentioning

confidence: 99%

Molybdenum Sulfide Nanosheets Coupled with Ni₂P Hollow Microspheres as an Efficient Electrocatalyst for Hydrogen Generation over a Wide pH Range Mediated by a 3D/2D Interface

Gao

Wang

et al. 2020

ChemElectroChem

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Developing high activity, strong durability, and cost‐efficient electrocatalysts for the hydrogen evolution reaction (HER) is critical for the sustainable production of hydrogen energy. Herein, we have rationally designed three‐dimensional (3D) heterogeneous catalyst of hollow nickel phosphide spheres coupled with molybdenum sulfide nanosheets (Ni2P@MoS2). Benefiting from the hollow spherical structure and the coupling effects between MoS2 and Ni2P, Ni2P@MoS2 shows superior activity for hydrogen generation over a wide pH range. It displays overpotentials of 181, 269 and 535 mV in 1.0 M KOH, 0.5 M H2SO4 and 1.0 M PBS, respectively, at a current density of 10 mA cm−2. A series of characterization techniques demonstrate that the strong coupling interaction between Ni2P and MoS2 effectively optimizes the electronic structure of the Ni2P‐MoS2 3D/2D interfaces, beneficial for regulating H* adsorption energy. This work offers a novel strategy for enhancing the HER performance of metal phosphide/sulfide catalysts by constructing heterostructured materials with abundant 3D/2D interfaces.

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Nitrogen treatment generates tunable nanohybridization of Ni5P4 nanosheets with nickel hydr(oxy)oxides for efficient hydrogen production in alkaline, seawater and acidic media

Cited by 288 publications

References 76 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

Electronic Structure Tuning of 2D Metal (Hydr)oxides Nanosheets for Electrocatalysis

Molybdenum Sulfide Nanosheets Coupled with Ni₂P Hollow Microspheres as an Efficient Electrocatalyst for Hydrogen Generation over a Wide pH Range Mediated by a 3D/2D Interface

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Nitrogen treatment generates tunable nanohybridization of Ni5P4 nanosheets with nickel hydr(oxy)oxides for efficient hydrogen production in alkaline, seawater and acidic media

Cited by 288 publications

References 76 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

Electronic Structure Tuning of 2D Metal (Hydr)oxides Nanosheets for Electrocatalysis

Molybdenum Sulfide Nanosheets Coupled with Ni2P Hollow Microspheres as an Efficient Electrocatalyst for Hydrogen Generation over a Wide pH Range Mediated by a 3D/2D Interface

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Molybdenum Sulfide Nanosheets Coupled with Ni₂P Hollow Microspheres as an Efficient Electrocatalyst for Hydrogen Generation over a Wide pH Range Mediated by a 3D/2D Interface