Preparation of RuxPd1-xO2 electrocatalysts for the oxygen evolution reaction (OER) in PEM water electrolysis

Kumar, Santosh; Ramakrishna, Seeram; Bhagawan, D.; Himabindu, V.

doi:10.1007/s11581-017-2359-4

Cited by 40 publications

(12 citation statements)

References 36 publications

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“…Also, insertion of Mn x O y enables the considerable enhancement of both OER activity and stability of RuO 2 , which may be the result of disrupted RuO 2 crystallinity, a modification in the electronic state of Mn, and cracked morphology . Recently, Kumar et al prepared the PdO-RuO 2 compound by a modified Adams fusion method, as acidic OER catalysts with extraordinary stability for 100 h in PEM water electrolysis . In addition to the above-mentioned oxides, such improved impact could be extended to other oxide components such as Ta 2 O 5 , ZrO 2 , WO 3 , MnO x , or Co 3 O 4 , among others. ,,,,,− Mixture of RuO 2 and related oxides were also verified to be efficient toward HER. − Li et al constructed a composite electrocatalyst composed of RuO 2 –NiO composites’ nanorod arrays morphology in situ grown on Ni foam via a facile hydrothermal approach .…”

Section: Recent Advances In Ru-based Electrocatalysts Toward Water Sp...mentioning

confidence: 99%

“…221 Recently, Kumar et al prepared the PdO-RuO 2 compound by a modified Adams fusion method, as acidic OER catalysts with extraordinary stability for 100 h in PEM water electrolysis. 222 In addition to the above-mentioned oxides, such improved impact could be extended to other oxide components such as Ta 2 O 5 , ZrO 2 , WO 3 , MnO x , or Co 3 O 4 , among others. 178,186,215,216,218,223−225 Mixture of RuO 2 and related oxides were also verified to be efficient toward HER.…”

Section: Acs Catalysismentioning

confidence: 99%

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Recent Advances and Prospective in Ruthenium-Based Materials for Electrochemical Water Splitting

et al. 2019

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As a highly appealing technology for hydrogen generation, water electrolysis including oxygen evolution reaction (OER) at the anode and hydrogen evolution reaction (HER) at the cathode largely depends on the availability of efficient electrocatalysts. Accordingly, over the past years, much effort has been made to develop various electrocatalysts with superior performance and reduced cost. Among them, ruthenium (Ru)-based materials for OER and HER are very promising because of their prominent catalytic activity, pH-universal application, the cheapest price among the precious metal family, and so on. Herein, recent advances in this hot research field are comprehensively reviewed. A general description about water splitting is presented to understand the reaction mechanism and proposed scaling relations toward activities, and key stability issues for Ru-based materials are further given. Subsequently, various Ru-involving electrocatalysts are introduced and classified into different groups for improving or optimizing electrocatalytic properties, with a special focus on several significant bifunctional electrocatalysts along with a simulated water electrolyzer. Finally, a perspective on the existing challenges and future progress of Ru-based catalysts toward OER and HER is provided. The main aim here is to shed some light on the design and construction of emerging catalysts for energy storage and conversion technologies.

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Section: Recent Advances In Ru-based Electrocatalysts Toward Water Sp...mentioning

confidence: 99%

Section: Acs Catalysismentioning

confidence: 99%

Recent Advances and Prospective in Ruthenium-Based Materials for Electrochemical Water Splitting

et al. 2019

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“…Next, a catalyst precursor solution of Pt and RuO x , which were selected as the high activity catalysts for HER and OER, respectively, was prepared. − For the Pt precursor solution, 20 mg of hexachloroplatinic(IV) acid (PtCl 6 ·6H 2 O, Kishida Chemical Co., Ltd.) was dissolved in 1 mL of ethanol (EtOH). For the RuO x precursor solution, ruthenium(III) nitrosyl nitrate solution (Ru 1.5%, solvent content: water 95.0%) (Ru(NO)(NO 3 ) 3 , Strem Chemicals, Inc.) was used as purchased.…”

Section: Methodsmentioning

confidence: 99%

Water Electrolysis Using Thin Pt and RuO_x Catalysts Deposited by a Flame-Annealing Method on Pencil-Lead Graphite-Rod Electrodes

et al. 2020

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An inexpensive, simple, and high-activity catalyst preparation method has been introduced in this work. Pt and RuO x catalysts were fabricated by soaking inexpensive graphite electrodes (pencil-lead graphite rod: PGR) in catalyst precursor solutions and using a simple flame-annealing method, which results in lower amount of Pt and RuO x catalyst layers. From X-ray photoelectron spectroscopy and near-edge X-ray absorption fine structure analysis, it has been found that platinum and ruthenium were deposited as zero-valence metal (Pt) and oxide (RuO x ), respectively. Catalytic activities of Pt/PGR and RuO x /PGR for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) were evaluated using neutral 1 M Na 2 SO 4 aqueous electrolyte, respectively. Although HER and OER currents using PGR without catalysts were −16 mA cm −2 (at −1.5 V vs Ag/AgCl) and +20 mA cm −2 (at +2.0 V vs Ag/AgCl), they were improved to −110 and +80 mA cm −2 with catalysts (Pt and RuO x ), respectively. Such an inexpensive and rapid catalyst electrode preparation method on PGR using flame-annealing is a very significant method in the initial catalyst activity evaluation requiring a large amount of trial and error.

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“…[ 20,24 ] Despite the OER competence of TMSs can be effectively improved, it has a gap compared with noble metals yet, and there is great room for enhancement. [ 25,26 ] Therefore, the exploitation of OER electrocatalysts based on TMSs and GO composites is a challenging task.…”

Section: Introductionmentioning

confidence: 99%

Ion‐change promoting Co nanoparticles@N‐doped carbon framework on Co₂SiO₄/rGO support forming “double‐triple‐biscuit” structure boosts oxygen evolution reaction

Pei

Yang

Dong

et al. 2023

Carbon Neutralization

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Exploring economic and high-performance electrocatalysts to decrease the overpotential of oxygen evolution reaction (OER) and facilitate its reaction kinetics is a frontier subject in line with green energy. Herein, metal-organic framework (MOF)-derived Co nanoparticles@N-doped carbon (Co NPs@N,C) is rationally designed on sandwich-like cobalt silicate/reduced graphene oxide (Co 2 SiO 4 /rGO) support to acquire Co NPs@N,C/Co 2 SiO 4 /rGO "double-triplebiscuit"-like structure as enhanced OER electrocatalysts. Co NPs@N,C on Co 2 SiO 4 /rGO support optimizes its geometric architecture and introduces new active sites. The "double-triple-biscuit"-like Co NPs@N,C/Co 2 SiO 4 /rGO structure achieves excellent OER ability compared with the existing materials based on transition metal silicates (TMSs). The overpotential of 278 mV is achieved at the current density of 10 mA cm −2 , and it is prominently higher than Co 2 SiO 4 /rGO support (390 mV). This excellent OER activity is rooted in its structural peculiarity, enabling efficient ion and electron transport. Co NPs@N,C are highly dispersed on the Co 2 SiO 4 /rGO support, increasing the active sites and avoiding self-aggregation of Co NPs in the OER process. This work combines the advantages of Co 2 SiO 4 /rGO support with the triple biscuits' structure and MOF to implement the preparation of boosted Co NPs@N,C/Co 2 SiO 4 /rGO, and it opens a new avenue for designing novel architectures to promote the OER activity of TMSs.

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Preparation of RuxPd1-xO2 electrocatalysts for the oxygen evolution reaction (OER) in PEM water electrolysis

Cited by 40 publications

References 36 publications

Recent Advances and Prospective in Ruthenium-Based Materials for Electrochemical Water Splitting

Recent Advances and Prospective in Ruthenium-Based Materials for Electrochemical Water Splitting

Water Electrolysis Using Thin Pt and RuO_x Catalysts Deposited by a Flame-Annealing Method on Pencil-Lead Graphite-Rod Electrodes

Ion‐change promoting Co nanoparticles@N‐doped carbon framework on Co₂SiO₄/rGO support forming “double‐triple‐biscuit” structure boosts oxygen evolution reaction

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Preparation of RuxPd1-xO2 electrocatalysts for the oxygen evolution reaction (OER) in PEM water electrolysis

Cited by 40 publications

References 36 publications

Recent Advances and Prospective in Ruthenium-Based Materials for Electrochemical Water Splitting

Recent Advances and Prospective in Ruthenium-Based Materials for Electrochemical Water Splitting

Water Electrolysis Using Thin Pt and RuOx Catalysts Deposited by a Flame-Annealing Method on Pencil-Lead Graphite-Rod Electrodes

Ion‐change promoting Co nanoparticles@N‐doped carbon framework on Co2SiO4/rGO support forming “double‐triple‐biscuit” structure boosts oxygen evolution reaction

Contact Info

Product

Resources

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Water Electrolysis Using Thin Pt and RuO_x Catalysts Deposited by a Flame-Annealing Method on Pencil-Lead Graphite-Rod Electrodes

Ion‐change promoting Co nanoparticles@N‐doped carbon framework on Co₂SiO₄/rGO support forming “double‐triple‐biscuit” structure boosts oxygen evolution reaction