Highly efficient oxygen evolution electrocatalysts based on nanosheet-shaped CuS in situ grown on carbon cloth

Li, Kaidi; Qian, Yongteng; Zhang, Huijun; Zhang, Linyu; Chai, Qingqing; QiuJing, Wang; Du, Jimin; Han, Yafei; Wang, Weimin; Kang, Dae Joon

doi:10.1016/j.ceramint.2019.02.137

Cited by 32 publications

(33 citation statements)

References 44 publications

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“…It is a simple process by which the strong bonds in water are broken to yield oxygen and hydrogen. Two chemical reactions occur during electrocatalysis, the oxygen evolution reaction (OER), and the hydrogen evolution reaction (HER) . The theoretical voltage to break a water molecule into O 2 and H 2 is 1.23 V. However, practical water electrolysis always requires additional potential, or overpotential, associated with the sluggish reaction kinetics of the OER at the interface between the catalyst and electrolyte .…”

Section: Introductionmentioning

confidence: 99%

“…Two chemical reactions occur during electrocatalysis, the oxygen evolution reaction (OER), and the hydrogen evolution reaction (HER). 6,7 The theoretical voltage to break a water molecule into O 2 and H 2 is 1.23 V. However, practical water electrolysis always requires additional potential, or overpotential, associated with the sluggish reaction kinetics of the OER at the interface between the catalyst and electrolyte. 8 Because they exhibit excellent catalytic activities, precious metal-containing compounds like RuO 2 and IrO 2 have been investigated over the last several decades.…”

Section: Introductionmentioning

confidence: 99%

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NiFeCo oxide as an efficient and sustainable catalyst for the oxygen evolution reaction

et al. 2019

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SUMMARY It has become essential to develop efficient, economical, and earth‐abundant catalysts for clean, environmentally friendly, and sustainable fuel production. Herein we describe the fabrication of a ternary NiFeCo oxide catalyst with a RF‐magnetron sputtering technique and investigated as durable catalyst oxygen evolution reaction (OER). A comparative study of the electrocatalytic activities of pure, bimetallic, and trimetallic catalysts is performed. With the synergetic effects of electronic structural modification and the large electrochemical area of the ternary NiFeCo oxide catalyst, current densities of 1 and 10 mA cm−2 are attained at small overpotentials of 248 and 280 mV, respectively. The relatively low Tafel slope of the trimetallic electrode (32.25 mV dec−1) indicates favorable catalytic kinetics during OER. This is attributed to the catalytic performance of metal constituents with high oxidation states. The electrode exhibits outstanding durability during rigorous oxygen evolution testing in 1 M KOH for 500 hours. Simple sputtering deposition of multimetallic oxide catalyst films can be applied to fabricate other multimetallic catalysts and electrodes for robust, efficient water spitting, and electrochemical energy storage.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

NiFeCo oxide as an efficient and sustainable catalyst for the oxygen evolution reaction

et al. 2019

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“…In Figure 4c, the S 2p scan also displayed two main peaks at 162.5 and 163.9 eV [23,24] corresponding to the 2p 3/2 and 2p 1/2 , respectively. The peak at 168.5 eV corresponds to the 6+ oxidation state of sulfur [25,26,27].…”

Section: Resultsmentioning

confidence: 99%

Ultra-Thin ReS2 Nanosheets Grown on Carbon Black for Advanced Lithium-Ion Battery Anodes

et al. 2019

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ReS2 nanosheets are grown on the surface of carbon black (CB) via an efficient hydrothermal method. We confirmed the ultra-thin ReS2 nanosheets with ≈1–4 layers on the surface of the CB (ReS2@CB) by using analytical techniques of field emission scanning electron microscopy (FESEM) and high-resolution transmission electron microscopy (HRTEM). The ReS2@CB nanocomposite showed high specific capacities of 760, 667, 600, 525, and 473 mAh/g at the current densities of 0.1 (0.23 C), 0.2 (0.46 C), 0.3 (0.7 C), 0.5 (1.15 C) and 1.0 A/g (2.3 C), respectively, in conjunction with its excellent cycling performance (432 mAh/g at 2.3 C; 91.4% capacity retention) after 100 cycles. Such LIB performance is greatly higher than pure CB and ReS2 powder samples. These results could be due to the following reasons: (1) the low-cost CB serves as a supporter enabling the formation of ≈1–4 layered nanosheets of ReS2, thus avoiding its agglomeration; (2) the CB enhances the electrical conductivity of the ReS2@CB nanocomposite; (3) the ultra-thin (1–4 layers) ReS2 nanosheets with imperfect structure can function as increasing the number of active sites for reaction of Li+ ions with electrolytes. The outstanding performance and unique structural characteristics of the ReS2@CB anodes make them promising candidates for the ever-increasing development of advanced LIBs.

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“…30,[39][40][41] In most previous works, Cu x S y was prepared by a conventional hydrothermal method, chemical bath deposition, and wet-chemical route. [42][43][44] These techniques are energy and time-consuming. Moreover, these methods employ various chemical auxiliaries.…”

Section: Introductionmentioning

confidence: 99%

Multifunctional photo‐electrocatalysts of copper sulfides prepared via pulsed laser ablation in liquid: Phase formation kinetics and photo‐electrocatalytic activity

Begildayeva

Chinnadurai

Lee

et al. 2022

Intl J of Energy Research

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Summary Designing a highly efficient and less expensive electrocatalyst for electrolyzers and fuel cells is of great importance to creating a sustainable future energy source. Herein, we applied a unique and extremely facile pulsed laser ablation in the liquid synthesis route for the fabrication of phase‐engineered CuxSy nanospheres. The multifunctionality of these catalysts was assessed by examining the hydrogen evolution reaction (HER), oxygen evolution reaction (OER), and methanol oxidation reaction (MOR). As a result, low overpotentials of 390 mV (HER) and 440 mV (OER) were achieved for sulfur‐rich and copper‐rich samples in alkaline media, respectively. Furthermore, the high selectivity of Cu over methanol and the high number of electrochemically accessible active sites equal to 7.9 × 1016 promoted the MOR with a current density of 28.3 mA/cm2 at the vertex potential. It is worth emphasizing that in this research, we consider the electrocatalyst's initial electrocatalytic water decomposition function to gain a better understanding of the photoelectrocatalytic behavior. Using a beneficial photo‐assisted electrochemical method, a high OER catalytic activity was obtained under light irradiation due to the large light absorption coefficients of the synthesized electrocatalysts, which facilitated electron transfer at the electrode‐electrolyte interface.

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Highly efficient oxygen evolution electrocatalysts based on nanosheet-shaped CuS in situ grown on carbon cloth

Cited by 32 publications

References 44 publications

NiFeCo oxide as an efficient and sustainable catalyst for the oxygen evolution reaction

NiFeCo oxide as an efficient and sustainable catalyst for the oxygen evolution reaction

Ultra-Thin ReS2 Nanosheets Grown on Carbon Black for Advanced Lithium-Ion Battery Anodes

Multifunctional photo‐electrocatalysts of copper sulfides prepared via pulsed laser ablation in liquid: Phase formation kinetics and photo‐electrocatalytic activity

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