Bimetallic Fe-Ni phosphide carved nanoframes toward efficient overall water splitting and potassium-ion storage

Wu, Yuhan; Yi, Yuyang; Sun, Zhongti; Sun, Hao; Guo, Tianqi; Zhang, Minghui; Cui, Lingfang; Jiang, Kai; Peng, Yang; Sun, Jingyu

doi:10.1016/j.cej.2020.124515

Cited by 53 publications

(21 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In particular, at a high current density of 50 mA cm −2 , Ni 2 P@PCC//FeP@PCC achieved the lowest operational voltage of 1.76 V in comparison with recently reported full cell performances, which showed values of $1.81 V (5.68 mg cm −2 ), 54 $1.82 V (unknown), 55 $1.87 V (8.0 mg cm −2 ), 56 $1.80 V (1.9 mg cm −2 ), 57 $1.83 V (1.8 mg cm −2 ), 58 $1.90 V (unknown), 59 and $1.82 V (0.27 mg cm −2 ). 60 Moreover, even at a high current density, the Ni 2 P@PCC//FeP@PCC cell operated for a longer time than the average operational time (43.3 hours) of previously reported overall water splitting cells ( Figure 7E). Consequently, we suggest that the colloid-based dip-coating with PCC and subsequent thermal phosphidation introduced in this study has great potential for realizing nonnoble metal phosphide-based flexible electrodes with high activity and stability for overall water splitting.…”

Section: F I G U R E 3 (mentioning

confidence: 69%

“…The full cell configured using simply prepared Ni 2 P@PCC and FeP@PCC flexible electrodes showed low operational voltage in spite of the low catalyst loading mass of 0.75 mg cm −2 . In particular, at a high current density of 50 mA cm −2 , Ni 2 P@PCC//FeP@PCC achieved the lowest operational voltage of 1.76 V in comparison with recently reported full cell performances, which showed values of ~1.81 V (5.68 mg cm −2 ), 54 ~1.82 V (unknown), 55 ~1.87 V (8.0 mg cm −2 ), 56 ~1.80 V (1.9 mg cm −2 ), 57 ~1.83 V (1.8 mg cm −2 ), 58 ~1.90 V (unknown), 59 and ~1.82 V (0.27 mg cm −2 ) 60 . Moreover, even at a high current density, the Ni 2 P@PCC//FeP@PCC cell operated for a longer time than the average operational time (43.3 hours) of previously reported overall water splitting cells (Figure 7E).…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

“…Based on the superior catalytic performance at a high current density for Ni 2 P@PCC//FeP@PCC, we compared the electrocatalytic overall water splitting performance with that of a recently reported TMP-based full cell, as shown in Figure 7D and Table S1. [54][55][56][57][58][59][60] The full cell configured using simply prepared Ni 2 P@PCC and FeP@PCC flexible electrodes showed low operational voltage in spite of the low catalyst loading mass of 0.75 mg cm −2 . In particular, at a high current density of 50 mA cm −2 , Ni 2 P@PCC//FeP@PCC achieved the lowest operational voltage of 1.76 V in comparison with recently reported full cell performances, which showed values of $1.81 V (5.68 mg cm −2 ), 54 $1.82 V (unknown), 55 $1.87 V (8.0 mg cm −2 ), 56 $1.80 V (1.9 mg cm −2 ), 57 $1.83 V (1.8 mg cm −2 ), 58 $1.90 V (unknown), 59 and $1.82 V (0.27 mg cm −2 ).…”

Section: F I G U R E 3 (mentioning

confidence: 99%

See 3 more Smart Citations

Highly active and stable electrocatalytic transition metal phosphides ( Ni ₂ P and FeP ) nanoparticles on porous carbon cloth for overall water splitting at high current density

2020

View full text Add to dashboard Cite

Highly active and stable hydrogen production at high current densities is required for practical application of electrocatalytic water splitting. In this study, highly active self-supporting electrodes with excellent durability were designed and developed for high-performance overall water splitting at a high current density. First, a colloid-based dip-coating method using porous carbon cloth (PCC) was introduced to obtain uniformly coated Ni and Fe nanoparticles on a conductive substrate. Then, the desired phase transitions of Ni and Fe to Ni 2 P and FeP, respectively, proceeded by thermal phosphidation at optimum temperature. The uniformly interconnected Ni 2 P layers on the PCC substrate (Ni 2 P@PCC) and FeP layers on the PCC substrate (FeP@PCC) exhibited outstanding oxygen and hydrogen evolution reactions, respectively. When each electrode was adopted as an anode and a cathode for the overall water splitting cell, excellent performance was achieved, with a low operational voltage of 1.76 V and high durability for 100 hours at a high current density of 50 mA cm −2 .

show abstract

Section: F I G U R E 3 (mentioning

confidence: 69%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: F I G U R E 3 (mentioning

confidence: 99%

See 2 more Smart Citations

Highly active and stable electrocatalytic transition metal phosphides ( Ni ₂ P and FeP ) nanoparticles on porous carbon cloth for overall water splitting at high current density

2020

View full text Add to dashboard Cite

show abstract

“…Song and co‐authors showed that the Cu dopant could tune the electronic structure of CoP, thus remarkably improving the water splitting intrinsic catalytic activity [20] . Wu's group synthesized Fe‐doped Ni 2 P nanoarrays as an efficient bifunctional OER/HER catalyst [21] . Besides, Zn [22] and Mn [23] were also demonstrated to be favorable dopants to boost the intrinsic activities of mono‐metallic TMPs.…”

Section: Introductionmentioning

confidence: 99%

Engineering Electronic Structures of Nickel Cobalt Phosphide via Iron Doping for Efficient Overall Water Splitting

et al. 2020

View full text Add to dashboard Cite

Efficient and low‐cost bifunctional OER/HER electrocatalysts are important for overall water splitting. Herein, three‐dimensional self‐supported Fe‐doped NiCo‐based phosphide nanosheets arrays are in‐situ grown on carbon fiber paper. The catalyst shows superior bifunctional activity, with an OER overpotential of 230 mV and an HER overpotential of 95 mV at 10 mA cm−2 in alkaline electrolyte. It is evidenced that the Fe doping facilitates electron transfer from Co/Ni to P, thus optimizing the electronic structures of both Ni and Co active sites, in turn greatly enhancing intrinsic OER and HER activities. The OER and HER turnover frequency are largely improved after Fe doping. When used as both anode and cathode for water splitting, the catalyst enables the electrolyzer to achieve 10 mV cm−2 at a low cell voltage of 1.59 V with a long‐term stability up to 35 h. This work highlights the synergy effect of multi‐metal‐based phosphides for efficient water electrocatalysis.

show abstract

Progress and Perspectives for Solar‐Driven Water Electrolysis to Produce Green Hydrogen

Zhao

Yuan

2023

Advanced Energy Materials

View full text Add to dashboard Cite

energy system is among the most promising solutions to solve the above issues. Substituting the current energy carrier with a sustainable fuel is one of the crucial points in the system. Hydrogen as a green and high energy density carrier, primarily derived from water, can satisfy the requirement of sustainable development and facilitate environmental protection and energy conservation. Nowadays, hydrogen is mainly produced from numerous nonrenewable energy such as fossil fuels and biomass for practical applications. [1][2][3] Water electrolysis is a hopeful strategy for efficient and sustainable hydrogen production, but not cost-effective due to the need for large electricity consumption. [4,5] It remains challenging to achieve highly effective hydrogen production with lowcost and renewable energy.Sunlight is an endlessly renewable energy source, which can substitute fossil fuels. In this regard, coupling of sunlight and water electrolysis is desperately needed. The photovoltaic module coupled with water electrolyzers (PV-EC) to achieve the direct conversion of solar energy into hydrogen fuel is a good choice for sustainable energy system. The solar-driven water electrolysis can be achieved through the electrical power generated by a photovoltaic system for driving an external water electrolyzer. [6][7][8] The solar cells do not need to immerse into the electrolyte and not be vulnerable to corrosion in this configuration. However, the high cost of solar photovoltaic devices limits its practical applications. Integrated photoelectrochemical (PEC) devices comprising a photovoltaic device and a water electrolyzer in a single device have aroused much attention. [9][10][11] It allows the direct coupling of light absorbers and catalysts, which could reduce the cost and mechanical limitations. One of the most prominent works is the "artificial leaf", which comprises a triple junction and amorphous silicon photovoltaic interfaced to hydrogen-and oxygen-evolving catalyst for achieving an efficiency of 4.7%. [12] Considering the fluctuating output power and intrinsically intermittent nature of solar energy, a rechargeable energy storage device could be introduced to serve as a reservoir to offer a stable electrical output and accommodate solar energy. The PV-ES-EC system can thus be achieved through the fabrication of an efficient energy storage device to couple the photovoltaic device and water electrolyzer.Notably, the above solar-driven water electrolysis systems require highly conductive and stable separators, highly Solar-driven water electrolysis has been considered to be a promising route to produce green hydrogen, because the conventional water electrolysis system is not completely renewable as it requires power from nonrenewable fossil fuel sources. This review emphasizes the strategies for solar-driven water electrolysis, including the construction of photovoltaic (PV)-water electrolyzer systems, PV-rechargeable energy storage devicewater electrolyzer systems with solar energy as the sole input energy, and photo...

show abstract

Bimetallic Fe-Ni phosphide carved nanoframes toward efficient overall water splitting and potassium-ion storage

Cited by 53 publications

References 35 publications

Highly active and stable electrocatalytic transition metal phosphides ( Ni ₂ P and FeP ) nanoparticles on porous carbon cloth for overall water splitting at high current density

Highly active and stable electrocatalytic transition metal phosphides ( Ni ₂ P and FeP ) nanoparticles on porous carbon cloth for overall water splitting at high current density

Engineering Electronic Structures of Nickel Cobalt Phosphide via Iron Doping for Efficient Overall Water Splitting

Progress and Perspectives for Solar‐Driven Water Electrolysis to Produce Green Hydrogen

Contact Info

Product

Resources

About

Bimetallic Fe-Ni phosphide carved nanoframes toward efficient overall water splitting and potassium-ion storage

Cited by 53 publications

References 35 publications

Highly active and stable electrocatalytic transition metal phosphides ( Ni 2 P and FeP ) nanoparticles on porous carbon cloth for overall water splitting at high current density

Highly active and stable electrocatalytic transition metal phosphides ( Ni 2 P and FeP ) nanoparticles on porous carbon cloth for overall water splitting at high current density

Engineering Electronic Structures of Nickel Cobalt Phosphide via Iron Doping for Efficient Overall Water Splitting

Progress and Perspectives for Solar‐Driven Water Electrolysis to Produce Green Hydrogen

Contact Info

Product

Resources

About

Highly active and stable electrocatalytic transition metal phosphides ( Ni ₂ P and FeP ) nanoparticles on porous carbon cloth for overall water splitting at high current density

Highly active and stable electrocatalytic transition metal phosphides ( Ni ₂ P and FeP ) nanoparticles on porous carbon cloth for overall water splitting at high current density