A bifunctional electrocatalyst of PtNi nanoparticles immobilized on three-dimensional carbon nanofiber mats for efficient and stable water splitting in both acid and basic media

Chen, Jiawei; Wang, Juan; Wang, Lina

doi:10.1007/s10853-017-1410-1

Cited by 45 publications

(18 citation statements)

References 30 publications

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“…To evaluate the HER catalytic activity of the NiCoP electrodes, the LSV curves on the negative potential ranging from 0 to −0.6 V (vs RHE) were obtained as shown in Figure d. The onset of hydrogen evolution was seen emerging at a low potential of −0.10 V (vs RHE) at a scan rate of 5 mV s −1 and a much less overpotential of 130 mV was required to drive a current density of 10 mA cm −2 for NiCoP/CNF900, which is comparatively lower than the reported Ni‐ and Co‐based HER electrodes listed in Table . Inset of Figure e illustrates the required HER overpotential to achieve a current density of 10 mA cm −2 for the prepared electrocatalysts.…”

Section: Resultsmentioning

confidence: 96%

“…The onset of hydrogen evolution was seen emerging at a low potential of −0.10 V (vs RHE) at a scan rate of 5 mV s −1 and a much less overpotential of 130 mV was required to drive a current density of 10 mA cm −2 for NiCoP/CNF900, which is comparatively lower than the reported Ni-and Co-based HER electrodes listed in Table 3. [12,13,23,29,30,[67][68][69][70][71] Inset of Figure 9e illustrates the required HER overpotential to achieve a current density of 10 mA cm −2 for the prepared electrocatalysts. Since long-term stability is a decisive criterion to evaluate the performance of the electrocatalyst, the CA analysis is studied for a constant potential of −0.28 V (vs RHE) for 20 h as shown in Figure 9e.…”

Section: Hydrogen Evolution Reactionmentioning

confidence: 99%

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Electrospun Carbon Nanofibers Encapsulated with NiCoP: A Multifunctional Electrode for Supercapattery and Oxygen Reduction, Oxygen Evolution, and Hydrogen Evolution Reactions

Surendran

Shanmugapriya

Sivanantham

et al. 2018

Advanced Energy Materials

283

148

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Functionalizing nanostructured carbon nanofibers (CNFs) with bimetallic phosphides enables the material to become an active electrode for multifunctional applications. A facile electrospinning technique is utilized for the first time to develop NiCoP nanoparticles encapsulated CNFs that are used as an energy storage system of supercapattery, and as an electrocatalyst for oxygen reduction, oxygen evolution, and hydrogen evolution reaction in KOH electrolyte. Evolving from the inclusion of bimetallic phosphide nanoparticles, the NiCoP/CNF electrode unveils superior‐specific capacitance (333 Fg−1 at 2 Ag−1) and rate capability (87%). The fabricated supercapattery device offers a voltage of 1.6 V that supplies a remarkable energy density (36 Wh kg−1) along with an improved power density (4000 W kg−1) and unwavering cyclic stability (25 000 cycles). Meanwhile, the NiCoP/CNF electrode has simultaneously performed well as a multifunctional electrocatalyst for oxygen reduction reaction at a half‐wave potential of 0.82 V versus reversible hydrogen electrode and can attain a current density of 10 mA cm−2 at a very low overpotential of 268 and 130 mV for the oxygen evolution reaction and hydrogen evolution reaction, respectively. Thus, the NiCoP/CNF with all its inimitable electrode properties has profoundly proved its proficiency at handling multifunctional challenges in terms of both storage and conversion.

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Section: Resultsmentioning

confidence: 96%

Section: Hydrogen Evolution Reactionmentioning

confidence: 99%

Electrospun Carbon Nanofibers Encapsulated with NiCoP: A Multifunctional Electrode for Supercapattery and Oxygen Reduction, Oxygen Evolution, and Hydrogen Evolution Reactions

Surendran

Shanmugapriya

Sivanantham

et al. 2018

Advanced Energy Materials

283

148

View full text Add to dashboard Cite

show abstract

“…By using such electrocatalysts as both cathode and anode, low‐cost water splitting electrolyzer can be realized, which avoids the usage of different equipment and processes for the different types of HER and OER electrocatalysts. Similarly, to enhance the overall water splitting performance, the electronic modulation and interface engineering of the electrocatalysts are also desirable 199‐213 …”

Section: Electrocatalytic Water Splitting Based On the Electrospun Namentioning

confidence: 99%

Electronic modulation and interface engineering of electrospun nanomaterials‐based electrocatalysts toward water splitting

et al. 2020

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Nowdays, electrocatalytic water splitting has been regarded as one of the most efficient means to approach the urgent energy crisis and environmental issues. However, to speed up the electrocatalytic conversion efficiency of their half reactions including hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), electrocatalysts are usually essential to reduce their kinetic energy barriers. Electrospun nanomaterials possess a unique one‐dimensional structure for outstanding electron and mass transportation, large specific surface area, and the possibilities of flexibility with the porous feature, which are good candidates as efficient electrocatalysts for water splitting. In this review, we focus on the recent research progress on the electrospun nanomaterials‐based electrocatalysts for HER, OER, and overall water splitting reaction. Specifically, the insights of the influence of the electronic modulation and interface engineering of these electrocatalysts on their electrocatalytic activities will be deeply discussed and highlighted. Furthermore, the challenges and development opportunities of the electrospun nanomaterials‐based electrocatalysts for water splitting are featured. Based on the achievements of the significantly enhanced performance from the electronic modulation and interface engineering of these electrocatalysts, full utilization of these materials for practical energy conversion is anticipated.

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“…In general, Ni‐based electrocatalysts have shown promising activity for OER and Pt for HER, and therefore the fabrication of PtNi alloy nanoparticles as bifunctional catalysts for both OER and HER is reasonable. Chen and co‐workers developed bifunctional PtNi nanoparticles on carbon nanofiber by electrospinning followed by the carbonization . The obtained PtNi/CNFs achieved a current density of 10 mA cm −2 at an overpotential of 34 mV with Tafel slope of 31 mV dec −1 in 0.5 M H 2 SO 4 for HER.…”

Section: Bifunctional Electrocatalysts For Overall Water Splittingmentioning

confidence: 99%

Recent Progress in Bifunctional Electrocatalysts for Overall Water Splitting under Acidic Conditions

et al. 2019

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Water electrolysis is an important energy conversion technology used to produce hydrogen on a mass scale. Until now, special emphasis has been placed on technology development for water electrolysis in acidic electrolytes, owing to the more facilitated hydrogen production under acidic conditions compared to alkaline water electrolysis. Among various catalyst design concepts, bifunctional catalysts capable of driving low overpotentials for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) are particularly interesting, owing to the simplicity of cell system design and potential capital reduction for catalyst production. Therefore, it is intriguing to prepare bifunctional catalysts that are compatible with acidic electrolytes. In this Minireview, we introduce the recent progress in bifunctional catalysts for overall water electrolysis under acidic conditions. We briefly describe the merits of water electrolysis in acidic solution and summarize the preparation and performance of the state‐of‐the‐art bifunctional catalysts towards both the acidic HER and OER. Finally, perspectives are provided for the current challenges and opportunities for bifunctional catalysts in acidic water electrolysis.

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A bifunctional electrocatalyst of PtNi nanoparticles immobilized on three-dimensional carbon nanofiber mats for efficient and stable water splitting in both acid and basic media

Cited by 45 publications

References 30 publications

Electrospun Carbon Nanofibers Encapsulated with NiCoP: A Multifunctional Electrode for Supercapattery and Oxygen Reduction, Oxygen Evolution, and Hydrogen Evolution Reactions

Electrospun Carbon Nanofibers Encapsulated with NiCoP: A Multifunctional Electrode for Supercapattery and Oxygen Reduction, Oxygen Evolution, and Hydrogen Evolution Reactions

Electronic modulation and interface engineering of electrospun nanomaterials‐based electrocatalysts toward water splitting

Recent Progress in Bifunctional Electrocatalysts for Overall Water Splitting under Acidic Conditions

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