Hydrothermal synthesis of highly crystalline RuS2 nanoparticles as cathodic catalysts in the methanol fuel cell and hydrochloric acid electrolysis

Li, Yanjuan; Li, Nan; Yanagisawa, Kazumichi; Li, Xiaotian; Yan, Xiao

doi:10.1016/j.materresbull.2014.12.068

Cited by 32 publications

(22 citation statements)

References 27 publications

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“…For RuS 2 [included in its pyrite structure with the (1 1 1) surface] the PDS is formation of NNH, which is visibly located on the top of the associative volcano being the most promising candidate. This facet of the RuS 2 in pyrite structure has already been synthesized experimentally and successfully tested as a cathode catalyst in methanol fuel cells, hydrochloric acid electrolysis, and the ORR . However, RuS 2 is also expected to contribute to some hydrogen evolution that can decrease the yield of ammonia if used in aqueous electrolytes.…”

Section: Resultsmentioning

confidence: 99%

“…This facet of the RuS 2 in pyrite structure has already been synthesized experimentally and successfully tested as ac athode catalyst in methanol fuel cells, hydrochloric acid electrolysis, and the ORR. [88][89][90][91] However, RuS 2 is also expected to contribute to some hydrogen evolution that can decrease the yield of ammonia if used in aqueous electrolytes. However, using nonaqueous electrolytes like 2,6-lutidinium (LutH + ) [53] or titanocene dichloride [(h5-C 5 H 5 ) 2 TiCl 2 ] [54] might attenuate the HER, and thus not affect the yield of ammonia considerably.…”

Section: Resultsmentioning

confidence: 99%

“…The promising candidates predicted here for the NRR are stable in the studied structures and there are several experimental evidenceso ft heir successful synthesis anda pplications for other electrochemical reactions. [72,73,[88][89][90][91][92] Therefore, it is possible to fabricate them in laboratories and test them experimentally.…”

Section: Resultsmentioning

confidence: 99%

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Biomimetic Nitrogen Fixation Catalyzed by Transition Metal Sulfide Surfaces in an Electrolytic Cell

2019

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The nitrogen reduction reaction was investigated on the surfaces of 18 different stable transition metal sulfides using density functional theory calculations. YS, ScS, and ZrS were modeled in the rocksalt structure with the (1 0 0) facet; TiS, VS, CrS, NbS, NiS, and FeS in NiAs‐type structure with the (1 1 1) facet; and MnS2, CoS2, IrS2, CuS2, OsS2, FeS2, RuS2, RhS2, and NiS2 in pyrite structure for both the (1 0 0) and (1 1 1) orientations. As the first step towards determination of sulfides that are less prone to hydrogen evolution, the competition between adsorption of NNH and H (for the associative mechanism), and between adsorption of N and H (for the dissociative mechanism) on these surfaces was considered. The catalytic activity through both the associative and dissociative mechanisms was explored and the overpotential required for electrochemical ammonia formation is reported. The scaling relations and volcano plots were constructed with free energy of adsorption of NNH or N on the surface as the descriptor. RuS2 was observed as the most active sulfide that could catalyze nitrogen reduction to ammonia at potentials around −0.3 V through the associative mechanism. NbS, CrS, TiS, and VS are also promising candidates for both the associative and dissociative mechanisms with overpotentials for nitrogen reduction around 0.7–1.1 V.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Biomimetic Nitrogen Fixation Catalyzed by Transition Metal Sulfide Surfaces in an Electrolytic Cell

2019

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“…More recently, greener routes have been developed based on hydrothermal synthesis. However, these processes are based on thiourea [ 53 , 54 ], as Sulphur precursor, which is suspected of causing cancer in addition to be harmful for the user, as reported in the Safety Data Sheets (SDS). Thus, it is clear that L-cysteine, a natural amino acid which is already reported for the synthesis of MoS 2 [ 55 ], can be attractive as a green precursor of Sulphur and, for this reason, it has been used in this work.…”

Section: Introductionmentioning

confidence: 99%

Graphene/Ruthenium Active Species Aerogel as Electrode for Supercapacitor Applications

et al. 2017

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Ruthenium active species containing Ruthenium Sulphide (RuS2) is synthesized together with a self-assembled reduced graphene oxide (RGO) aerogel by a one-pot hydrothermal synthesis. Ruthenium Chloride and L-Cysteine are used as reactants. The hydrothermal synthesis of the innovative hybrid material occurs at 180 °C for 12 h, by using water as solvent. The structure and morphology of the hybrid material are fully characterized by Raman, XRD, XPS, FESEM and TEM. The XRD and diffraction pattern obtained by TEM display an amorphous nanostructure of RuS2 on RGO crystallized flakes. The specific capacitance measured in planar configuration in 1 M NaCl electrolyte at 5 mV s−1 is 238 F g−1. This supercapacitor electrode also exhibits perfect cyclic stability without loss of the specific capacitance after 15,000 cycles. In summary, the RGO/Ruthenium active species hybrid material demonstrates remarkable properties for use as active material for supercapacitor applications.

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“…shows HR-TEM images of the hydrothermally synthesized cobalt ruthenium sulfides. All cobalt ruthenium sulfide materials are irregular in shape, moderately polydisperse, and somewhat aggregated[59].Figure 5a−c show nanocrystals with average sizes of 30, 50, and 20 nm, respectively. Figure 5d,e show nanocrystals approximately 50 nm in size.…”

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confidence: 99%

Hydrothermal Synthesis of Cobalt Ruthenium Sulfides as Promising Pseudocapacitor Electrode Materials

Bolagam

2020

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In this paper, we report the successful synthesis of cobalt ruthenium sulfides by a facile hydrothermal method. The structural aspects of the as-prepared cobalt ruthenium sulfides were characterized using X-ray diffraction, X-ray photoelectron spectroscopy, and Raman spectroscopy. All the prepared materials exhibited nanocrystal morphology. The electrochemical performance of the ternary metal sulfides was investigated by cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrochemical impedance spectroscopy techniques. Noticeably, the optimized ternary metal sulfide electrode exhibited good specific capacitances of 95 F g−1 at 5 mV s−1 and 75 F g−1 at 1 A g−1, excellent rate capability (48 F g−1 at 5 A g−1), and superior cycling stability (81% capacitance retention after 1000 cycles). Moreover, this electrode demonstrated energy densities of 10.5 and 6.7 Wh kg−1 at power densities of 600 and 3001.5 W kg−1, respectively. These attractive properties endow proposed electrodes with significant potential for high-performance energy storage devices.

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Hydrothermal synthesis of highly crystalline RuS2 nanoparticles as cathodic catalysts in the methanol fuel cell and hydrochloric acid electrolysis

Cited by 32 publications

References 27 publications

Biomimetic Nitrogen Fixation Catalyzed by Transition Metal Sulfide Surfaces in an Electrolytic Cell

Biomimetic Nitrogen Fixation Catalyzed by Transition Metal Sulfide Surfaces in an Electrolytic Cell

Graphene/Ruthenium Active Species Aerogel as Electrode for Supercapacitor Applications

Hydrothermal Synthesis of Cobalt Ruthenium Sulfides as Promising Pseudocapacitor Electrode Materials

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