Strong Electrostatic Adsorption Strategy to Enhance Interaction Between Ultra‐Small Ru Nanoparticles and Carbon for High‐Efficient Electrocatalyst Toward HER in Acidic and Alkaline Media

Fan, Xizheng; Pang, Qingqing

doi:10.1002/celc.202101018

Cited by 5 publications

(4 citation statements)

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“…For example, the activity of CNT/C/Ru 0.37 wt%-700 is comparable to that of some Ru-based catalysts in alkaline and acidic electrolytes. [8,[25][26][27][28][29][30][31][32] Flexibility is one of the potential advantages of CNT/C/ Ru 0.37 wt% -700, which will better adapt to environmental changes in applications and develop flexible energy equipment.…”

Section: Resultsmentioning

confidence: 99%

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Defective Amorphous Carbon‐Coated Carbon Nanotube‐Loaded Ruthenium Nanoparticles as Efficient Electrocatalysts for Hydrogen Production

et al. 2023

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Compared with hydrogen evolution reaction (HER) under acidic conditions, the kinetic steps of alkaline HER are more complex, which involves the adsorption and cleavage of water molecules. Defect and interface engineering are two important means to enhance basic HER. In order to prepare catalysts with high activity and stability under both acidic and basic conditions, a defective amorphous carbon loaded with Ru nanoparticles coaxially wrapped around a carbon nanotube (CNT) sponge network is presented. The presence of amorphous carbon can promote the uniform loading of Ru nanoparticles and limit the growth of Ru nanoparticles, and also the introduction of oxygen defects can regulate the electronic structure of the metal and improve its charge transport capacity, thus enhancing the catalytic performance. The catalyst CNT/C/Ru0.37 wt%‐700 prepared under optimized conditions exhibits excellent stability and activity. At a current density of 10 mA cm−2, the overpotential of HER is as low as 38.3 and 36.2 mV under alkaline and acidic conditions, respectively, which is better than most reported Ru‐based catalysts. This study details innovative and feasible ideas for the design and preparation of loaded catalysts, which can contribute to the development of high‐performance electrochemical catalysts.

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Section: Resultsmentioning

confidence: 99%

“…For example, the activity of CNT/C/Ru 0.37 wt%‐ 700 is comparable to that of some Ru‐based catalysts in alkaline and acidic electrolytes. [ 8,25–32 ]…”

Section: Resultsmentioning

confidence: 99%

Defective Amorphous Carbon‐Coated Carbon Nanotube‐Loaded Ruthenium Nanoparticles as Efficient Electrocatalysts for Hydrogen Production

et al. 2023

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“…As we all know, carbon materials with the characteristics of excellent corrosion resistance in acid and alkali, low price, large specific surface area, and high conductivity, are usually selected as electrocatalyst substrates to enrich the exposed active sites, facilitate electron transfer and regulate electron distribution of active species. [ 28 ] Recently, numerous Ru‐supported carbon materials have been constructed and achieved highly active HER performance over the full pH range.…”

Section: Ph‐universal Ru‐based Electrocatalysts Toward Hermentioning

confidence: 99%

“…Owing to their distinguished electrocatalytic properties, metal phosphides (MPs) have been verified to play an important role in the HER. [ 28,45 ] Although pioneering works have displayed the wonderful HER behavior of various MPs, they are not still standing shoulder to shoulder with the state‐of‐the‐art Pt/C. Fortunately, Ru‐based phosphatides (Ru x P y ) with Pt‐like or even superior performance at full pH values, break this dilemma.…”

Section: Ph‐universal Ru‐based Electrocatalysts Toward Hermentioning

confidence: 99%

Recent Research Advances in Ruthenium‐Based Electrocatalysts for Water Electrolysis Across the pH‐Universal Conditions

Fan

Pang

2022

Energy Tech

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Sustainable production of green energy is the most promising way to solve the present energy crisis. [1] Hydrogen is considered an ideal selection because of its high-energy density and zero emission of CO 2 , whose realization would be a revolutionary victory in the energy field. [2] Among the known technologies of hydrogen evolution, electrochemical water splitting operated through renewable energy is an efficient and mild pathway to collect purified hydrogen. [3] Water splitting proceeds via two half-reactions, including hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). Compared to the two-electron transfer process of HER, OER originating at the anode displays the kinetically sluggish involving four proton-coupled electron transfers to generate oxygen. [4] As reported, OER requires the electrode voltage of 1.23 V under standard conditions, which determines the baseline value for overall water splitting. [5] However, many additional factors, including the impedances of electrode materials and interface, electrolyte, and temperature that slow down the reaction rate, drive up the demand for action potential under a practical environment. [6] Particularly, the complexity of electrolyte composition with different pH levels raises higher requirements for catalysts, making electrode materials with strong corrosion resistance more valuable. [7] However, the achievements, describing catalysts with satisfactory performance toward HER and OER in the full pH range, are limited. [8] Therefore, the development of economical, efficient, and bifunctional electrocatalysts working in pH-universal electrolytes is an attractive and challenging task.To date, noble metal-based catalysts are recognized as the state-of-the-art catalysts for HER (Pt-based materials) and OER (Ir-based oxides-IrO 2 ). [9] Pt-based electrocatalyst effortlessly exhibits the objective rate of hydrogen production in acidic environments, as well as IrO 2 as the benchmark electrocatalyst efficaciously promotes the sluggish OER in the alkaline medium. However, the noble and scarce nature largely hinders the large-scale application of Pt/Ir. [10] Most importantly, their single function makes themselves impossible to accomplish overall water splitting alone. To continue this interesting research, researchers have made great efforts to explore suitable substitutes. The diverse materials containing non-precious metals and related composites have been explored and evaluated, due to their earth abundance, low cost, and high efficiency. [11] Despite these materials displaying inspiring activity being comparable to noble metals, they are limited to a narrow pH range, thus be difficult to steadily provide long-lasting active output. [12] Ruthenium (Ru), one of the cheaper Pt group metals, exhibits Pt-like HER activity due to the similar hydrogen bond strength with Pt. [13] Ru-based materials bring an eclectic

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Advances and Challenges in Interfacial Binding Forces for Electrocatalysts

Yan,

An,

et al. 2024

ChemSusChem

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As a practical chemical energy conversion technology, electrocatalysis could be used in fields of energy conversion and environmental protection. In recent years, significant research efforts have been devoted to the design and development of high‐performance electrocatalysts because the rational design of catalysts is crucial for enhancing electrocatalytic performance. Creating electrocatalysts by forming interactions between different components at the interface is an important means of controlling and improving performance. Therefore, several common interfacial binding forces used for synthesizing electrocatalysts was systematically summarized in this review for the first time. The discussion revolves around the crucial roles these binding forces play in various electrocatalytic reaction processes. Various characterization techniques capable of proving the existence of these interfacial binding forces was also involved in the review. Finally, some prospects and challenges for designing and researching materials through the utilization of interfacial binding forces were presented.

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Strong Electrostatic Adsorption Strategy to Enhance Interaction Between Ultra‐Small Ru Nanoparticles and Carbon for High‐Efficient Electrocatalyst Toward HER in Acidic and Alkaline Media

Cited by 5 publications

References 52 publications

Defective Amorphous Carbon‐Coated Carbon Nanotube‐Loaded Ruthenium Nanoparticles as Efficient Electrocatalysts for Hydrogen Production

Defective Amorphous Carbon‐Coated Carbon Nanotube‐Loaded Ruthenium Nanoparticles as Efficient Electrocatalysts for Hydrogen Production

Recent Research Advances in Ruthenium‐Based Electrocatalysts for Water Electrolysis Across the pH‐Universal Conditions

Advances and Challenges in Interfacial Binding Forces for Electrocatalysts

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