NiCo 2 S 4 nanocrystals anchored on nitrogen-doped carbon nanotubes as a highly efficient bifunctional electrocatalyst for rechargeable zinc-air batteries

Han, Xiaopeng; Wu, Xiaoyu; Zhong, Cheng; Deng, Yida; Zhao, Naiqin; Hu, Wenbin

doi:10.1016/j.nanoen.2016.12.008

Cited by 360 publications

(192 citation statements)

References 45 publications

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“…[1][2][3][4][5] Non-noble metal electrocatalysts such as Fe, Co, Ni, Mo, and their suldes, 6-8 phosphides 9-12 or their alloys [13][14][15][16][17] have been investigated widely as electrocatalysts over the past decades. Among them, the low-cost, earthabundant iron sulde has attracted much attention as an electrocatalytic material due to its excellent catalytic activity.…”

Section: Introductionmentioning

confidence: 99%

Hierarchical Co–FeS₂/CoS₂ heterostructures as a superior bifunctional electrocatalyst

Guo

Yan

et al. 2018

RSC Adv.

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The traditional method of preparing hydrogen and oxygen as efficient clean energy sources mainly relies on the use of platinum, palladium, and other precious metals. However, the high cost and low abundance limit wide application of such metals. As such, one challenging issue is the development of low-cost and highefficiency electrocatalysts for such purposes. In this study, we synthesized Co-FeS 2 /CoS 2 heterostructures via a hydrothermal method for efficient hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). Benefitting from their unique three-dimensional hierarchical nanostructures, Co-doped FeS 2 , and CoS 2 formed heterostructures on Co-FeS 2 petals, which bestowed remarkable electrocatalytic properties upon Co-FeS 2 /CoS 2 nanostructures. Co-FeS 2 /CoS 2 effectively catalyzed the OER with an overpotential of 278 mV at a current density of 10 mA cm À2 in 1 M KOH solution, and also is capable of driving a current density À10 mA cm À2 at an overpotential of À103 mV in 0.5 M H 2 SO 4 solution. The overpotential of the OER and HER only decreased by 5 mV and 3 mV after 1000 cycles. Our Co-FeS 2 / CoS 2 materials may offer a promising alternative to noble metal-based electrocatalysts for water splitting.

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Section: Introductionmentioning

confidence: 99%

Hierarchical Co–FeS₂/CoS₂ heterostructures as a superior bifunctional electrocatalyst

Guo

Yan

et al. 2018

RSC Adv.

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“…In this context, various nanostructured nickel cobalt sulfides and their hybrids with carbon materials have been assessed for electrocatalysis. [31][32][33]88,123,[230][231][232][233][234][235][236][237][238][239] As a typical thiospinel, NiCo 2 S 4 with the conventional spinel structure possesses more octahedral electrocatalytically active sites of Co(III) cations as compared to NiCo 2 O 4 , holding potentially good bifunctional catalytic activity for both ORR and OER. [230] The bifunctional electrocatalytic properties of NiCo 2 S 4 for oxygen were first evaluated by Liu et al [33] NiCo 2 S 4 nanoparticles were loaded on nitrogen and sulfur co-doped rGO nanosheets (NiCo 2 S 4 @N/S-rGO) by a one-pot solvothermal route.…”

Section: Wwwadvenergymatdementioning

confidence: 99%

Mixed Metal Sulfides for Electrochemical Energy Storage and Conversion

Lou

2017

Advanced Energy Materials

690

319

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Mixed metal sulfides (MMSs) have attracted increased attention as promising electrode materials for electrochemical energy storage and conversion systems including lithium‐ion batteries (LIBs), sodium‐ion batteries (SIBs), hybrid supercapacitors (HSCs), metal–air batteries (MABs), and water splitting. Compared with monometal sulfides, MMSs exhibit greatly enhanced electrochemical performance, which is largely originated from their higher electronic conductivity and richer redox reactions. In this review, recent progresses in the rational design and synthesis of diverse MMS‐based micro/nanostructures with controlled morphologies, sizes, and compositions for LIBs, SIBs, HSCs, MABs, and water splitting are summarized. In particular, nanostructuring, synthesis of nanocomposites with carbonaceous materials and fabrication of 3D MMS‐based electrodes are demonstrated to be three effective approaches for improving the electrochemical performance of MMS‐based electrode materials. Furthermore, some potential challenges as well as prospects are discussed to further advance the development of MMS‐based electrode materials for next‐generation electrochemical energy storage and conversion systems.

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“…The Ni and Co elements are relativelye nvironmentally friendly,a nd their alloys exhibit high electrocatalytic performance for the ORR. [56] Compoundso fT Ms in the first row are still the most widely investigated, and these include CoO, [57] Co 9 S 8 , [58] NiCo 2 S 4 , [59] NiCoMnO 4 , [60] Fe 2 N, [61] Fe 3 C, [62] Fe 3 O 4 , [63] and CoP. [55] Although the electrocatalytic activityo fF e-nanoparticle-decorated N-C materials for the ORR is excellent, it is still inferior to that of substrates modulated by the FeCo, FeNi, and FeCoNia lloys.…”

Section: Heterojunction Strategiesmentioning

confidence: 99%

“…The diagram of the calculated Gibbs free energyf or each step of the ORR is also useful in investigating the OER (Figure 9c), because the OER is the reverse reaction of the ORR. [82c] In terms of TM compounds used in the engineering of TMinteracting N-C materials, the arsenides, [83] carbides, [84] sulfides, [58][59]85] phosphides, [86] and oxides [60,87] of TMs have all been reported to be effective for the OER. Besides, FeNi and NiCo alloys are efficient in improvingt he electrocatalytic performance as ar esulto famarked decrease in the overpotentialf or N-C materialsd ecorated with these alloys, and this is indicative of promoted electrocatalytic performance towards the OER.…”

Section: Heterojunction Strategies For the Oermentioning

confidence: 99%

Stable and Efficient Nitrogen‐Containing Carbon‐Based Electrocatalysts for Reactions in Energy‐Conversion Systems

et al. 2018

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High activity and stability are crucial for the practical use of electrocatalysts in fuel cells, metal-air batteries, and water electrolysis, including the oxygen reduction reaction, hydrogen evolution reaction, oxygen evolution reaction, and oxidation reactions of formic acid and alcohols. Electrocatalysts based on nitrogen-containing carbon (N-C) materials show promise in catalyzing these reactions; however, there is no systematic review of strategies for the engineering of active and stable N-C-based electrocatalysts. Herein, a comprehensive comparison of recently reported N-C-based electrocatalysts regarding both electrocatalytic activity and long-term stability is presented. In the first part of this review, the relationships between the electrocatalytic reactions and selection of the element to modify the N-C-based materials are discussed. Afterwards, synthesis methods for N-C-based electrocatalysts are summarized, and strategies for the synthesis of highly stable N-C-based electrocatalysts are presented. Multiple tables containing data on crucial parameters for both electrocatalytic activity and stability are displayed in this review. Finally, constructing M-N moieties is proposed as the most promising engineering strategy for stable N-C-based electrocatalysts.

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NiCo 2 S 4 nanocrystals anchored on nitrogen-doped carbon nanotubes as a highly efficient bifunctional electrocatalyst for rechargeable zinc-air batteries

Cited by 360 publications

References 45 publications

Hierarchical Co–FeS₂/CoS₂ heterostructures as a superior bifunctional electrocatalyst

Hierarchical Co–FeS₂/CoS₂ heterostructures as a superior bifunctional electrocatalyst

Mixed Metal Sulfides for Electrochemical Energy Storage and Conversion

Stable and Efficient Nitrogen‐Containing Carbon‐Based Electrocatalysts for Reactions in Energy‐Conversion Systems

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NiCo 2 S 4 nanocrystals anchored on nitrogen-doped carbon nanotubes as a highly efficient bifunctional electrocatalyst for rechargeable zinc-air batteries

Cited by 360 publications

References 45 publications

Hierarchical Co–FeS2/CoS2 heterostructures as a superior bifunctional electrocatalyst

Hierarchical Co–FeS2/CoS2 heterostructures as a superior bifunctional electrocatalyst

Mixed Metal Sulfides for Electrochemical Energy Storage and Conversion

Stable and Efficient Nitrogen‐Containing Carbon‐Based Electrocatalysts for Reactions in Energy‐Conversion Systems

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Hierarchical Co–FeS₂/CoS₂ heterostructures as a superior bifunctional electrocatalyst

Hierarchical Co–FeS₂/CoS₂ heterostructures as a superior bifunctional electrocatalyst