High-Performance Rh<sub>2</sub>P Electrocatalyst for Efficient Water Splitting

Duan, Haohong; Li, Dongguo; Tang, Yan; He, Yang; Ji, Shufang; Wang, Rongyue; Lv, Haifeng; Lopes, Pietro Papa; Paulikas, A. P.; Li, Haoyi; Mao, Scott X.; Wang, Chongmin; Marković, Nenad M.; Li, Jun; Stamenković, Vojislav R.; Li, Yadong

doi:10.1021/jacs.7b01376

Cited by 344 publications

(247 citation statements)

References 40 publications

(51 reference statements)

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“…Hydrogen evolution reaction (HER) by splitting water is considered as a clean and effective way to produce H 2 . Currently, precious metal‐based materials like Pt, Ru, Rh are considered to be promising catalysts to generate H 2 because of their low overpotentials . However, the practical application of noble metal catalysts is largely restrained by limited reserves, high prices and low stability.…”

Section: Figurementioning

confidence: 99%

P,Se‐Codoped MoS₂ Nanosheets as Accelerated Electrocatalysts for Hydrogen Evolution

et al. 2018

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As the half reaction of water splitting, hydrogen evolution reaction (HER) is a prospective way to generate clean fuel of hydrogen. Molybdenum disulfide (MoS2), as a member of the transition‐metal dichalcogenides, has attracted much research attention since its potential HER activity is predicted to be even comparable to Pt. However, the HER activity of MoS2 is still far from desirable, owing to the high resistance and limited intrinsic active sites. Herein, we have successfully engineered MoS2 by doping P and Se to regulate the electron density. The optimized P,Se‐MoS2/CNTs exhibit a low overpotential of 110 mV at 10 mA cm−2 and a small Tafel slope of 49 mV dec−1, much better than P‐MoS2/CNTs, Se‐MoS2/CNTs, MoS2/CNTs, and closing to commercial Pt/C. The P,Se‐MoS2/CNTs also display excellent electrochemical stability over 15 days. Raman, XPS and surface valence band spectra confirm that P and Se codoping modulate the electron densities of the catalytic sites, which can largely improve the HER activity.

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Section: Figurementioning

confidence: 99%

P,Se‐Codoped MoS₂ Nanosheets as Accelerated Electrocatalysts for Hydrogen Evolution

et al. 2018

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“…Moreover, these systems use platinum group metals (PGMs) based catalysts for hydrogen evolution reaction (HER, one of the most fundamental reaction for hydrogen production), and operate under highly corrosive conditions (strong acids) which further increases the cost and safety concerns of overall setup 13. Therefore, development of alternative catalysts and reaction medium is dire need of time to fulfill the demands of future energy 14, 15. The HER setup under alkaline conditions present an attractive substitution that not only increase the stability of PGMs‐based water electrolyzer but also open the possibility of hunting transition metal based catalysts.…”

Section: Introductionmentioning

confidence: 99%

Electrocatalysts for Hydrogen Evolution in Alkaline Electrolytes: Mechanisms, Challenges, and Prospective Solutions

et al. 2017

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Hydrogen evolution reaction (HER) in alkaline medium is currently a point of focus for sustainable development of hydrogen as an alternative clean fuel for various energy systems, but suffers from sluggish reaction kinetics due to additional water dissociation step. So, the state‐of‐the‐art catalysts performing well in acidic media lose considerable catalytic performance in alkaline media. This review summarizes the recent developments to overcome the kinetics issues of alkaline HER, synthesis of materials with modified morphologies, and electronic structures to tune the active sites and their applications as efficient catalysts for HER. It first explains the fundamentals and electrochemistry of HER and then outlines the requirements for an efficient and stable catalyst in alkaline medium. The challenges with alkaline HER and limitation with the electrocatalysts along with prospective solutions are then highlighted. It further describes the synthesis methods of advanced nanostructures based on carbon, noble, and inexpensive metals and their heterogeneous structures. These heterogeneous structures provide some ideal systems for analyzing the role of structure and synergy on alkaline HER catalysis. At the end, it provides the concluding remarks and future perspectives that can be helpful for tuning the catalysts active‐sites with improved electrochemical efficiencies in future.

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“…Hence, the discovery of earth‐abundant, low‐cost, and high activity bifunctional electrocatalysts to achieve low energy‐intensive water electrolysis is still highly desired. A wide range of earth abundant catalytic materials with different morphologies, structure or loaded on various substrates have been developed for OER and HER, including transition metal oxides/hydroxides, carbides, and phosphides . Nevertheless, as stated in recent report, metal chalcogenides, nitrides, and phosphides are very sensitive in the strongly oxidizing OER conditions .…”

Section: Introductionmentioning

confidence: 99%

Ultrathin Porous NiFeV Ternary Layer Hydroxide Nanosheets as a Highly Efficient Bifunctional Electrocatalyst for Overall Water Splitting

Dinh

Zheng

Dai

et al. 2017

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Herein, the hydrothermal synthesis of porous ultrathin ternary NiFeV layer double hydroxides (LDHs) nanosheets grown on Nickel foam (NF) substrate as a highly efficient electrode toward overall water splitting in alkaline media is reported. The lateral size of the nanosheets is about a few hundreds of nanometers with the thickness of ≈10 nm. Among all molar ratios investigated, the Ni Fe V -LDHs/NF electrode depicts the optimized performance. It displays an excellent catalytic activity with a modest overpotential of 231 mV for the oxygen evolution reaction (OER) and 125 mV for the hydrogen evolution reaction (HER) in 1.0 m KOH electrolyte. Its exceptional activity is further shown in its small Tafel slope of 39.4 and 62.0 mV dec for OER and HER, respectively. More importantly, remarkable durability and stability are also observed. When used for overall water splitting, the Ni Fe V -LDHs/NF electrodes require a voltage of only 1.591 V to reach 10 mA cm in alkaline solution. These outstanding performances are mainly attributed to the synergistic effect of the ternary metal system that boosts the intrinsic catalytic activity and active surface area. This work explores a promising way to achieve the optimal inexpensive Ni-based hydroxide electrocatalyst for overall water splitting.

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High-Performance Rh₂P Electrocatalyst for Efficient Water Splitting

Cited by 344 publications

References 40 publications

P,Se‐Codoped MoS₂ Nanosheets as Accelerated Electrocatalysts for Hydrogen Evolution

P,Se‐Codoped MoS₂ Nanosheets as Accelerated Electrocatalysts for Hydrogen Evolution

Electrocatalysts for Hydrogen Evolution in Alkaline Electrolytes: Mechanisms, Challenges, and Prospective Solutions

Ultrathin Porous NiFeV Ternary Layer Hydroxide Nanosheets as a Highly Efficient Bifunctional Electrocatalyst for Overall Water Splitting

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High-Performance Rh2P Electrocatalyst for Efficient Water Splitting

Cited by 344 publications

References 40 publications

P,Se‐Codoped MoS2 Nanosheets as Accelerated Electrocatalysts for Hydrogen Evolution

P,Se‐Codoped MoS2 Nanosheets as Accelerated Electrocatalysts for Hydrogen Evolution

Electrocatalysts for Hydrogen Evolution in Alkaline Electrolytes: Mechanisms, Challenges, and Prospective Solutions

Ultrathin Porous NiFeV Ternary Layer Hydroxide Nanosheets as a Highly Efficient Bifunctional Electrocatalyst for Overall Water Splitting

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High-Performance Rh₂P Electrocatalyst for Efficient Water Splitting

P,Se‐Codoped MoS₂ Nanosheets as Accelerated Electrocatalysts for Hydrogen Evolution

P,Se‐Codoped MoS₂ Nanosheets as Accelerated Electrocatalysts for Hydrogen Evolution