Carbon cloth supported cobalt phosphide as multifunctional catalysts for efficient overall water splitting and zinc–air batteries

Cheng, Ya-Fei; Liao, Fan; Shen, Wen; Liu, Liangbin; Jiang, Binbin; Li, Yanqing; Shao, Mingwang

doi:10.1039/c7nr06859j

Cited by 94 publications

(39 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…ChemSusChem 2018, 11,3956 -3964 www.chemsuschem.org KOH) was fabricatedt hat delivered ac urrent density of 10 mA cm À2 at ac ell voltage of 1.64 V( without iR correction) with exceptionally high stability(% 89 %a ctivity retention)f or 40 hofelectrochemical testing ( Figure 6). The observed activity is better or comparable to that of similar recently reported water-splitting catalysts,s uch as Ni/Mo 2 C-PC, [41] Co-Mo 2 C/ NC, [42] CoP x -NC, [46,47,61,62] Co 9 S 8 @MoS 2 , [63] Co 0.85 Se/NiFe-LDH/EG (LDH = layered doubleh ydroxide, EG = exfoliated graphene), [64] Co 1 Mn 1 CH/NF (CH = carbonate hydroxide, NF = nickel foam), [65] or the tested RuO 2 //PtÀCc ouple ( Table S6 in the Supporting Information), which supports the importance of the developed materiali nt he search for al ow-cost,n oble-metal-free, watersplitting electrocatalyst.…”

Section: Electrocatalytic Activitysupporting

confidence: 76%

An Intriguing Pea‐Like Nanostructure of Cobalt Phosphide on Molybdenum Carbide Incorporated Nitrogen‐Doped Carbon Nanosheets for Efficient Electrochemical Water Splitting

et al. 2018

View full text Add to dashboard Cite

The development of noble-metal-free, efficient, electrochemical, water-splitting catalyst systems has attracted considerable attention in recent times. In this study, a metal-organic framework based synthetic route to couple two non-noble-metal-based catalysts, CoP and Mo C, supported on nitrogen-doped carbon has been developed. The strategy enables the formation of a nanohybrid with an attractive pea-like morphology, in which spherical CoP particles (≈10 nm) are embedded on two-dimensional nitrogen-doped carbon enriched with ultrafine Mo C nanoparticles. This composition boosts the electrochemical alkaline water-splitting reaction by showing overpotentials (η ) of only 94 and 265 mV for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), respectively, at a current density of 10 mA cm . Additionally, in an acidic medium, the η values are 107 and 330 mV for HER and OER, respectively; this suggests good bifunctionality at both lower and higher pH levels. Overall water splitting has been demonstrated by the developed catalyst at a cell voltage of 1.64 V for a current density of 10 mA cm in alkaline medium, and a constant current is produced for more than 40 h under chronoamperometric conditions. This study describes the combination of two nanocomponents, with interconnected surface structures, which result in highly active and stable electrocatalytic performance.

show abstract

Section: Electrocatalytic Activitysupporting

confidence: 76%

An Intriguing Pea‐Like Nanostructure of Cobalt Phosphide on Molybdenum Carbide Incorporated Nitrogen‐Doped Carbon Nanosheets for Efficient Electrochemical Water Splitting

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Electrodeposited metal hydroxides can act as a precursor for further hybridization with other elements. For example, Co(OH) 2 was first electrodeposited on carbon cloth and then thermally phosphorized to generate a bifunctional catalyst of CoP nanosheets …”

Section: Direct Deposition Applied To the Synthesis Of Bifunctional Cmentioning

confidence: 99%

Synthesis of Bifunctional Catalysts for Metal‐Air Batteries Through Direct Deposition Methods

Xiong

Ivey

2018

Batteries & Supercaps

View full text Add to dashboard Cite

Rechargeable metal-air batteries, such as Li-air and Zn-air batteries, have gained renewed interest because of their high theoretical energy density, safety and low cost. The air electrode, with bifunctional electrocatalysts for the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER), plays the most important role in determining battery performance. Direct deposition of catalysts on the air electrode, using methods such as electrodeposition, electroless deposition, chemical vapor deposition (CVD) and physical vapor deposition (PVD), is shown to be a viable way to fabricate durable and active catalysts with high efficiency and low cost. This review examines recent research activities which apply direct deposition methods to prepare bifunctional catalysts. The benefits and drawbacks of these methods are compared to provide guidelines for their application.[a] Dr.

show abstract

“…[7] Fe, [8] Co [9] and their alloys [10] have been numerously investigated as alternatives of noble metal catalysts in ORR and OER catalysis. Cobalt based electrocatalysts, including metallic cobalt, [11] cobalt phosphides, [12] cobalt sulfides [13] and cobalt oxides, [14] showed promising OER/ORR activities. Spinel phase cobalt oxides (Co 3 O 4 ) have been tremendously researched as air electrode for rechargeable ZABs due to the considerable ORR/ OER catalytic activities.…”

Section: Introductionmentioning

confidence: 99%

Cobalt‐Doped Tungsten Sulfides as Stable and Efficient Air Electrodes for Rechargeable Zinc‐Air Batteries

Zhang

et al. 2019

ChemElectroChem

View full text Add to dashboard Cite

Stable and efficient air electrode are significantly important for the industrial applications of rechargeable zinc‐air batteries (ZABs). In this work, we introduce approximately 1 at % cobalt to tungsten sulfides nanosheets (Co−WS2) to create a bifunctional electrocatalyst for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). A boosted ORR activity with half‐wave potential of 840 mV vs. RHE is achieved for Co−WS2 compared to that of WS2 (776 mV vs. RHE). Meanwhile, the overpotential for delivering 10 mA cm−2 in OER catalysis is decreased from 492 to 303 mV after doping with Co atoms. The excellent ORR and OER activities are ascribed to the presence of Co2+ and Co3+ species in Co−WS2, enabling OOH* intermediate formation and strong binding ability to O2, respectively. The assembled liquid rechargeable ZAB from Co−WS2 exhibits a threefold higher power density than commercial Pt/C−IrO2; moreover, a stable discharge‐charge performance (100 cycles) is recorded. Finally, the fabricated all‐solid‐sate ZAB exhibits a reasonably high power density of 58 mW cm−2 and good stability, implying the potential application of Co−WS2 as an air electrode for rechargeable ZABs.

show abstract

Carbon cloth supported cobalt phosphide as multifunctional catalysts for efficient overall water splitting and zinc–air batteries

Cited by 94 publications

References 31 publications

An Intriguing Pea‐Like Nanostructure of Cobalt Phosphide on Molybdenum Carbide Incorporated Nitrogen‐Doped Carbon Nanosheets for Efficient Electrochemical Water Splitting

An Intriguing Pea‐Like Nanostructure of Cobalt Phosphide on Molybdenum Carbide Incorporated Nitrogen‐Doped Carbon Nanosheets for Efficient Electrochemical Water Splitting

Synthesis of Bifunctional Catalysts for Metal‐Air Batteries Through Direct Deposition Methods

Cobalt‐Doped Tungsten Sulfides as Stable and Efficient Air Electrodes for Rechargeable Zinc‐Air Batteries

Contact Info

Product

Resources

About