Self-catalyzed growth of Cu@graphdiyne core–shell nanowires array for high efficient hydrogen evolution cathode

Xue, Yurui; Guo, Yuan; Yi, Yuanping; Li, Yongjun; Liu, Huibiao; Li, Dan; Yang, Wensheng; Li, Yuliang

doi:10.1016/j.nanoen.2016.09.005

Cited by 159 publications

(107 citation statements)

References 56 publications

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“…[14,21,30] 2) The direct growth of 2D nanosheets on 3D porous conductive substrates provides high porosity and open spaces in the electrode, maximizing the number of exposed active sites and facilitating the efficient electron and mass transport as well as gas generation and release during the catalytic process. [14,21,30] 2) The direct growth of 2D nanosheets on 3D porous conductive substrates provides high porosity and open spaces in the electrode, maximizing the number of exposed active sites and facilitating the efficient electron and mass transport as well as gas generation and release during the catalytic process.…”

Section: Full Water Splitting Performancementioning

confidence: 99%

“…[1][2][3][4] However, the development of practical full water splitting (FWS) applications encountered very serious challenges: the sluggish kinetics of OER and HER. [21,22] Inspired by above considerations, we here report the fabrication of Fe-doped Co carbonate hydroxide nanosheets array on 3D conductive Ni foam (FCCH/NF) as a monolithic OER-HER bifunctional electrocatalyst for FWS. Additionally, the direct growth of catalyst grown on 3D conductive substrates has been considered to be an effective way for exposing more active sites, facilitating mass transport, and thus leading to more efficient use of active sites and increasing the electrical conductivity.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Multifunctional Single‐Crystallized Carbonate Hydroxides as Highly Efficient Electrocatalyst for Full Water splitting

Hui

Xue

Jia

et al. 2018

Advanced Energy Materials

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111

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η) are thus needed to drive these reactions. RuO 2 /IrO 2 and Pt-based materials are currently considered as the state-ofthe-art electrocatalysts for OER in alkaline conditions and HER in acidic conditions, respectively. But their high cost and scarcity hinder their practical uses. Another important aspect, researchers expect that electrocatalysts are able to work in the same alkaline media for both OER and HER processes to achieve superior FWS performances. Earth-abundant elementbased electrocatalysts, [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] such as transition-metal oxides, carbides, sulfides, phosphides, and graphdiyne, are promising alternatives to precious electrocatalysts. However, most of them are effective for OER, but very inactive to HER in alkaline condition and vice versa. We can find that there is still a lack of low cost, high efficiency bifunctional OER/HER electrocatalysts in practical applications.Transition metal carbonate hydroxides (TMCHs) are a class of layered materials, which comprised of positive-charged cations and intercalated anions in the interlayer region. [15][16][17][18] Such structure has rich redox properties and high accessibility to electrolyte, providing a very interesting possibility in developing electrocatalysts with efficient electrocatalytic activities. However, because of its low conductivity, only very limited focus has been put on the electrocatalytic behavior of TMCHs. For example, cobalt carbonate hydroxide microspheres required 466 mV, [15] cobalt carbonate hydroxide on carbon black required 509 mV, [16] and cobalt carbonate hydroxide superstructures on carbon paper needed 240 mV [17] to deliver 10 mA cm −2 , respectively. Obviously, the electrocatalytic activities of the reported TMCHs are still far from practical applications. Making the TMCHs with excellent electrocatalytic activities and stabilities is therefore of great significance.The first-row (3d) TMs (e.g., Co and Fe) are promising candidates for precious catalysts. For TM hydroxides, the cations on the surface are considered to be the active sites during the catalytic processes. The introduction of dopants or changing of the M 2+ /M 3+ molar ratios have been reported to effectively tune the electronic structure and lead to optimal adsorption energies toward higher electrocatalytic activity. [4,19,20] Recently, Zhang et al. reported that the OH adsorption energy was either too weak on CoOOH(01-12) surface or too strong on FeOOH(010) surface. [4] After being doped with Fe, the OH adsorption energy was reduced by ≈50% compared with the unary CoOOH(01-12)The controllable synthesis of single-crystallized iron-cobalt carbonate hydroxide nanosheets array on 3D conductive Ni foam (FCCH/NF) as a monolithic oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) bifunctional electrocatalyst for full water splitting is described. The results demonstrate that the incorporation of Fe can effectively tune the morphology, composition, electronic structure, and electrochemical active surface ...

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Section: Full Water Splitting Performancementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Multifunctional Single‐Crystallized Carbonate Hydroxides as Highly Efficient Electrocatalyst for Full Water splitting

Hui

Xue

Jia

et al. 2018

Advanced Energy Materials

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111

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“…Superior to conventional carbon materials, a new carbon allotrope, GDY, featuring a single layer of sp‐ and sp 2 ‐hybridized carbon network, has been first synthesized by our group, predicted to be the most stable carbon allotrope, and demonstrated excellent catalytic performances, because of the rich pi bonds and large cavity structure . Owing to its unique electronic properties, graphdiyne possesses the natural band gap (0.47 or 1.12 eV, by two different methods), the intrinsic charge carrier mobility of graphdiyne (2 × 10 5 cm 2 V −1 s −1 ) which is higher than graphene and single‐wall carbon nanotubes (7.9 × 10 4 cm 2 V −1 s −1 ), and the silicon‐like electronic conductivity (2.56 × 10 −1 S m −1 ) .…”

Section: Introductionmentioning

confidence: 99%

“…These are the natural advantages of graphdiyne superior to all other carbon materials and beneficial for the improvement of catalytic activities. For example, our recent studies show that graphdiyne‐supported electrocatalysts (e.g., self‐supported 3D Cu@graphdiyne nanowires array, CoNC/graphdiyne, and graphdiyne‐supported NiCo 2 S 4 nanowires array) have ultrahigh HER catalytic activity and stability (even over 38 000 cycles without degradation) over all values of pH. Heteroatom‐doping (such N‐doping) is predicted to be best way for tuning the electronic structure and the catalytic activity of graphdiyne .…”

Section: Introductionmentioning

confidence: 99%

Controlled Growth of MoS₂ Nanosheets on 2D N‐Doped Graphdiyne Nanolayers for Highly Associated Effects on Water Reduction

Xue

Hui

et al. 2018

Adv Funct Materials

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133

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The first utilization of nitrogen-doped graphdiyne (NGDY) as an efficient catalytic promoter for hydrogen evolution reaction (HER) is reported. X-ray powder diffraction and X-ray photoelectron spectroscopy studies indicate the presence of strong interactions between NGDY and MoS 2 , which should effectively facilitate the charge transport behavior and improvement of the HER kinetics. The creative hybridization of MoS 2 and NGDY endows such heterostructure with structural and compositional advantages for boosting the catalytic activity (low overpotential of 186 mV at 10 mA cm −2 and Tafel slope of 63 mV dec −1 ) and extraordinary stability (higher than all reported MoS 2 -based materials and even better than that of commercial Pt and almost all benchmarked electrocatalysts). All of the results not only demonstrate that NGDY can be used as an effective catalytic promoter for hydrogen production, but also provide new strategy for fabricating efficient watersplitting electrodes.

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“…Furthermore, Wang's group developed a novel 3D Cu@GDY core‐shell heterojunction through simple self‐catalyzed growth route. [ 121 ] The prepared Cu@GDY exhibited amazing HER activity, it acquired comparatively low overpotentials of 79 and 162 mV to reach catalytic current densities of 10 and 100 mA cm −2 . This HER performance was much better than that of previously reported non‐precious‐metal‐based materials under acid condition.…”

Section: Gdy Supported Electrocatalysts For Energy Conversionmentioning

confidence: 99%

Graphdiyne: A Rising Star of Electrocatalyst Support for Energy Conversion

Lai

Zhang

et al. 2020

Advanced Energy Materials

119

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Graphdiyne (GDY), a rising star of 2D carbon allotropes with one‐atom‐thick planar layers, has achieved the coexistence of sp‐ and sp2‐hybridized carbon atoms in a 2D planar structure. In contrast to the prevailing carbon allotropes, GDY possesses Dirac cone structures, which endow it with unique chemical and physical properties, including an adjustable inherent bandgap, high‐speed charge carrier transfer efficiency, and excellent conductivity. Additionally, GDY also displays great potential in photocatalysis, rechargeable batteries, solar cells, detectors, and especially electrocatalysis. In this work, various GDY‐supported electrocatalysts are described and the reasons why GDY can act as a novel support are analyzed from the perspective of molecular structure, electronic properties, mechanical properties, and stability. The various electrochemical applications of GDY‐supported electrocatalysts in energy conversion such as hydrogen evolution reaction, oxygen evolution reaction, oxygen reduction reaction, overall water splitting, and nitrogen reduction reaction are reviewed. The challenges facing GDY and GDY‐based materials in future research are also outlined. This review aims at providing an in‐depth understanding of GDY and promoting the development and application of this novel carbon material.

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Self-catalyzed growth of Cu@graphdiyne core–shell nanowires array for high efficient hydrogen evolution cathode

Cited by 159 publications

References 56 publications

Multifunctional Single‐Crystallized Carbonate Hydroxides as Highly Efficient Electrocatalyst for Full Water splitting

Multifunctional Single‐Crystallized Carbonate Hydroxides as Highly Efficient Electrocatalyst for Full Water splitting

Controlled Growth of MoS₂ Nanosheets on 2D N‐Doped Graphdiyne Nanolayers for Highly Associated Effects on Water Reduction

Graphdiyne: A Rising Star of Electrocatalyst Support for Energy Conversion

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Self-catalyzed growth of Cu@graphdiyne core–shell nanowires array for high efficient hydrogen evolution cathode

Cited by 159 publications

References 56 publications

Multifunctional Single‐Crystallized Carbonate Hydroxides as Highly Efficient Electrocatalyst for Full Water splitting

Multifunctional Single‐Crystallized Carbonate Hydroxides as Highly Efficient Electrocatalyst for Full Water splitting

Controlled Growth of MoS2 Nanosheets on 2D N‐Doped Graphdiyne Nanolayers for Highly Associated Effects on Water Reduction

Graphdiyne: A Rising Star of Electrocatalyst Support for Energy Conversion

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Controlled Growth of MoS₂ Nanosheets on 2D N‐Doped Graphdiyne Nanolayers for Highly Associated Effects on Water Reduction