Graphene‐Like Multilayered CuS Nanosheets Assembled into Flower‐Like Microspheres and Their Electrocatalytic Oxygen Evolution Properties

Liang, Huijun; Wei, Shuang; Zhang, Yatian; Chao, Shunjun; Han, Huijuan; Wang, Xiaobing; Zhang, Hua; Yang, Lin

doi:10.1002/celc.201701074

Cited by 62 publications

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“…Fe, Cu, Co, Ni and Mn) derived oxides or hydroxides, phosphates, perovskites, chalcogenides and so on, [11][12][13][14][15] but there are scarce reports of supermolecule complexes used as direct electrocatalyst for OER. 16 On the other hand, supermolecule complexes are a class of interesting materials which have been intensively investigated in diverse elds, such as luminescence, gas storage, sensing, magnetics, catalysis, and so on. [17][18][19][20][21] The supermolecule complex structures and properties are mainly dependent on functional ligands and metal nodes.…”

Section: Introductionmentioning

confidence: 99%

Comparison of two water oxidation electrocatalysts by copper or zinc supermolecule complexes based on porphyrin ligand

et al. 2018

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Based on the 5,10,15,20-tetra(cyanophenyl)porphyrin (CNTCPP) ligand, two supermolecule complexes formulated as [Cu(CNTCPP)]$2DMF (Cu-CNTCPP) and [Zn(CNTCPP)] (Zn-CNTCPP) have been synthesized and structurally characterized by single-crystal X-ray diffraction. Cu-CNTCPP features a 0 dimensional (0D) supramoleculer structure, whereas Zn-CNTCPP is a 2D structure. With coordination unsaturated points, Cu-CNTCPP exhibits electrocatalytic activity toward oxygen evolution reaction (OER) with low potential in 1.0 M KOH, generating a current density of 10 mA cm À2 at an potential of 1.66 V vs. RHE, which means it an efficient electrocatalytic material for OER.

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Section: Introductionmentioning

confidence: 99%

Comparison of two water oxidation electrocatalysts by copper or zinc supermolecule complexes based on porphyrin ligand

et al. 2018

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“…As shown in Figure c, the observed Cu 2p 1/2 and Cu 2p 3/2 peaks locating at 952.0 and 932.1 eV can demonstrate the presence of divalent Cu 2+ . There are two peaks present at 163.2 and 162.0 eV in the S 2p spectrum (Figure d), corresponding to the S 2p 1/2 and S 2p 3/2 . As shown in Figure e, a doublet Se 3d peaks at 55.1 and 54.1 eV can be attributed to the Se 3d 3/2 and Se 3d 5/2 of divalent Se 2− in selenides .…”

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confidence: 76%

“…The chemical composition of CuS 1− x Se x nanosheet was further confirmed by XPS analysis. As shown in Figure c, the observed Cu 2p 1/2 and Cu 2p 3/2 peaks locating at 952.0 and 932.1 eV can demonstrate the presence of divalent Cu 2+ . There are two peaks present at 163.2 and 162.0 eV in the S 2p spectrum (Figure d), corresponding to the S 2p 1/2 and S 2p 3/2 .…”

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confidence: 76%

Anionic Se‐Substitution toward High‐Performance CuS₁₋_xSe_x Nanosheet Cathode for Rechargeable Magnesium Batteries

Wang

Zhu

Chen

et al. 2019

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host materials, including metal oxides (V 2 O 5 , [2] VO x , [3] MnO 2 , [4] and MoO 3 [5] ), metal sulfides (Mo 6 S 8 , [6] MoS 2 , [7] Ti 2 S 4 , [8] α-Ag 2 S, [9] VS 4 , [10] and VS 2 [11] ), metal selenides (Mo 6 Se 8 , [12] TiSe 2 , [13] Cu 2 Se, [14] and Ni 0.75 Fe 0.25 Se 2 [15] ), have been proposed as possible cathode candidates. In particular, copper sulfide (CuS) has recently attracted great attention because of its unique properties of nontoxicity, eco-friendliness, low cost, and high theoretical specific capacity (560 mAh g −1 ). [16] Nevertheless, CuS cathode materials are still subject to a series of unsatisfactory performances related to reversible capacity, rate capability, and cycling stability caused by the serious polarization from divalent Mg 2+ . [17] Thus, the development of suitable host materials with fast reaction kinetics is highly desired but still challenging. To solve the aforementioned issues, many strategies have been proposed and brought considerable achievement in CuS cathode materials, including: i) increased ionic diffusion kinetics through elevating working temperature, [16] ii) enhanced Mg 2+ mobility by adjusting electrode-electrolyte interface, [18] and iii) shortened Mg 2+ diffusion length via constructing suitable nanoarchitectures. [19] However, the electron and solid-state Mg 2+ transport kinetics of the most reported CuS cathode materials are still unsatisfactory. It is therefore a great challenge to effectively design CuS cathode materials with high practical capacity and long cycling life, especially at high current densities. In our previous work, [19a] although the hierarchical CuS nanosheet showed good cycling performances for rMBs (135 mAh g −1 at 200 mA g −1 upon 200 cycles), its rate capability still needs to be further improved. Heavy heteroatom substitution in transition metal sulfides is expected as an efficient route to regulate their atomic structure for providing optimized configuration for Mg 2+ uptake. [20] In particular, the fractional anionic Se-substitution to S could enlarge the Mg 2+ diffusion path and reduce their interaction with the based lattice, thereby cutting down the ionic diffusion barrier and resulting much better kinetics. [21] Till now, despite the well-known Chevrel phase Mo 6 S 8−X Se X (X = 0, 1, 2), [12,21a,22] Se-substituted copper sulfide cathode materials for rMBs have been rarely reported.Herein, we develop an efficient synthesis strategy to prepare 2D anionic Se-substituted CuS 1−x Se x nanosheets with about Rechargeable magnesium batteries (rMBs) are promising as the most ideal further energy storage systems but lack competent cathode materials due to sluggish redox reaction kinetics. Herein, developed is an anionic Sesubstitution strategy to improve the rate capability and the cycling stability of 2D CuS 1−x Se x nanosheet cathodes through an efficient microwave-induced heating method. The optimized CuS 1−x Se x (X = 0.2) nanosheet cathode can exhibit high reversible capacity of 268.5 mAh g −1 at 20 mA g −1 and good cycli...

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“…Graphene‐like two‐dimensional (2D) nanomaterials possess unique chemical, physical and electronic properties. Joint work by teh Wang and Yang groups led to the synthesis of new graphene‐like multilayered CuS nanosheeets, with further assembly into 2D flower‐like microspheres [51] . They used these CuS flower‐like structures for electrocatalytic oxygen evolution which was better than the commercial RuO 2 catalyst.…”

Section: Inorganic‐organic Flower‐like Structuresmentioning

confidence: 99%

Flower‐Like Superstructures: Structural Features, Applications and Future Perspectives

Bhosale

Kobaisi

Jadhav

et al. 2020

The Chemical Record

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Mimicking natural objects such as flowers, is an objective of scientists not only because of their attractive appearance, but also to understand the natural phenomena that underpin real world applications such as drug delivery, enzymatic reactions, electronics, and catalysis, to name few. This article reviews the types, preparation methods, and structural features of flower‐like structures along with their key applications in various fields. We discuss the various types of flower‐like structures composed of inorganic, organic‐inorganic hybrid, inorganic‐protein, inorganic‐enzyme and organic compositions. We also discuss recent development in flower‐like structures prepared by self‐assembly approaches. Finally, we conclude our review with the future prospects of flower‐like micro‐structures in key fields, being biomedicine, sensing and catalysis.

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Graphene‐Like Multilayered CuS Nanosheets Assembled into Flower‐Like Microspheres and Their Electrocatalytic Oxygen Evolution Properties

Cited by 62 publications

References 62 publications

Comparison of two water oxidation electrocatalysts by copper or zinc supermolecule complexes based on porphyrin ligand

Comparison of two water oxidation electrocatalysts by copper or zinc supermolecule complexes based on porphyrin ligand

Anionic Se‐Substitution toward High‐Performance CuS₁₋_xSe_x Nanosheet Cathode for Rechargeable Magnesium Batteries

Flower‐Like Superstructures: Structural Features, Applications and Future Perspectives

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Graphene‐Like Multilayered CuS Nanosheets Assembled into Flower‐Like Microspheres and Their Electrocatalytic Oxygen Evolution Properties

Cited by 62 publications

References 62 publications

Comparison of two water oxidation electrocatalysts by copper or zinc supermolecule complexes based on porphyrin ligand

Comparison of two water oxidation electrocatalysts by copper or zinc supermolecule complexes based on porphyrin ligand

Anionic Se‐Substitution toward High‐Performance CuS1−xSex Nanosheet Cathode for Rechargeable Magnesium Batteries

Flower‐Like Superstructures: Structural Features, Applications and Future Perspectives

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Anionic Se‐Substitution toward High‐Performance CuS₁₋_xSe_x Nanosheet Cathode for Rechargeable Magnesium Batteries