Eco-friendly synthesis and morphology-dependent superior electrocatalytic properties of CuS nanostructures

Venkadesh, A.; Radhakrishnan, Shankar; Mathiyarasu, J.

doi:10.1016/j.electacta.2017.06.077

Cited by 73 publications

(9 citation statements)

References 41 publications

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“…Figure 4c is the Cu 2p spectrum in which 933.1 eV and 953.3 eV are assigned to the binding energy of Cu 2p 3/2 and Cu 2p 1/2 , respectively. The binding energy interval between Cu 2p 3/2 and Cu 2p 1/2 is about 20.2 eV, which represents the existence of copper as Cu 2+ ions in the CuS network structure [23]. Much stronger Cu 2+ satellite peaks located at 942.9 eV and 962.3 eV are observed in the Cu 2p spectrum of the sample, which further demonstrate the existence of Cu 2+ [24].…”

Section: Electrochemical Measurementsmentioning

confidence: 78%

Chemical Dealloying Synthesis of CuS Nanowire-on-Nanoplate Network as Anode Materials for Li-Ion Batteries

Wang

Zhang

et al. 2018

Metals

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CuS is a metal sulfide anode material used in constructing lithium ion batteries (LIBs) with great promise. However, its practical application is limited by rapid capacity decline, poor cycling, and rate performance. In this work, the CuS nanowire-on-nanoplate network is synthesized through an improved dealloying method under two contrasting reaction temperatures. When used as an LIB anode, the as-obtained CuS network exhibits superior cycling performance (420 mAh•g −1 retained after 100 cycles at 0.2 C). When at 3 C, it still delivers a capacity of around 350 mAh•g −1. The improved electrochemical performances of the CuS anode should be attributed to the well-designed nanowire-on-nanoplate network structure in which the introduction of nanowires improves Li storage sites, shortens Li-ion diffusion distance, enhances the conductivity of active materials, and offers multiscale spaces for buffering the volume variation. The fabrication route adopted in this paper has an important significance for developing the dealloying technique and designing more suitable anode structures for LIBs.

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Section: Electrochemical Measurementsmentioning

confidence: 78%

Chemical Dealloying Synthesis of CuS Nanowire-on-Nanoplate Network as Anode Materials for Li-Ion Batteries

Wang

Zhang

et al. 2018

Metals

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“…2c, the two major peaks at 931.8 eV and 951.7 eV were assigned to Cu 2p 3/2 and Cu 2p 1/2 , respectively. The binding energy separation was about 20 eV, which was the typical characteristic of Cu 2+ in CuS [8]. Besides, two satellite (Sat.)…”

Section: Characterizations Of the Productsmentioning

confidence: 87%

“…In the S 2p spectrum (Fig. 2d), the typical peak from 160 to 164 eV was fitted by two peaks located at 161.8 eV and 162.9 eV, which was the feature of S-Cu [8,18]. A characteristic peak at 168.9 eV also indicated the existence of metal sulfides [19].…”

Section: Characterizations Of the Productsmentioning

confidence: 88%

“…As we know, the performance of electrochemical sensors closely correlates with the properties of electrocatalysts. Inspired by the structure-activity theory, high-active electrocatalysts can be obtained by controlling their unique morphology and fine structure [8]. Accordingly, researchers have focused on the rational design of electrocatalytic materials with different structures, such as nanosheets, nanorods, nanoplates, nanocubes, and nanospheres.…”

Section: Introductionmentioning

confidence: 99%

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Design of Double-Shelled CuS Nanocages to Optimize Electrocatalytic Dynamic for Sensitive Detection of Ascorbic Acid

et al. 2020

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Although transition metal sulfides have presented prospect in electrochemical sensing, their electrocatalytic performance still cannot meet the demands for practical applications due to the difficulties in mass transport and electron transfer. In this work, double-shelled CuS nanocages (2-CuS NCs) were prepared for enzyme-free ascorbic (AA) sensor through a Cu 2 O-templated method. The unique double-shelled hollow structure displayed large specific surface areas, ordered diffusion channels, increased volume occupying rate, and accelerated electron transfer rate, resulting in enhanced electrochemical dynamic. As a sensing electrode for AA, 2-CuS NCs modified glassy carbon electrode (2-CuS NCs/GCE) exhibited eminent electrocatalytic activity in terms of satisfying sensitivity (523.7 μA mM −1 cm −2 ), short response time (0.31 s), and low limit of detection (LOD, 0.15 μM). 2-CuS NCs look promising for analytical sensing of AA in electrochemical sensors thanks to its prominent electrocatalytic kinetics issued from double-shelled hollow porous structure.

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“…Recently, three dimensional (3D) hierarchical nanostructure have provoked considerable interest due to their rich architectures, distinct properties and various novel applications [ 1 , 2 , 3 , 4 ]. Controlled synthesis of hierarchical nanostructure is highly desirable, owing to their structure merits.…”

Section: Introductionmentioning

confidence: 99%

The Facile Synthesis of Branch-Trunk Ag Hierarchical Nanostructures and Their Applications for High-Performance H2O2 Electrochemical Sensors

Zhang

Rao

Cai

et al. 2017

Sensors

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A novel branch-trunk Ag hierarchical nanostructure was synthesized via a galvanic replacement reaction combined with microwave-assisted synthesis using Te nanowire as a sacrificial template. The Te nanowire was synthesized via a hydrothermal process. We further investigated the potential application of the obtained hierarchical nanostructures in electrochemical sensor analysis. The results showed that the as-prepared sensor exhibited a wide linear range with 0.05 µM to 1.925 mM (R = 0.998) and the detection limit was estimated to be 0.013 µM (S/N = 3). These results indicate the branch-truck Ag hierarchical nanostructures are an excellent candidate material for sensing applications.

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Eco-friendly synthesis and morphology-dependent superior electrocatalytic properties of CuS nanostructures

Cited by 73 publications

References 41 publications

Chemical Dealloying Synthesis of CuS Nanowire-on-Nanoplate Network as Anode Materials for Li-Ion Batteries

Chemical Dealloying Synthesis of CuS Nanowire-on-Nanoplate Network as Anode Materials for Li-Ion Batteries

Design of Double-Shelled CuS Nanocages to Optimize Electrocatalytic Dynamic for Sensitive Detection of Ascorbic Acid

The Facile Synthesis of Branch-Trunk Ag Hierarchical Nanostructures and Their Applications for High-Performance H2O2 Electrochemical Sensors

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