Ni<sub>3</sub>S<sub>2</sub> anchored to N/S co-doped reduced graphene oxide with highly pleated structure as a sulfur host for lithium–sulfur batteries

Guo, Daying; Zhang, Zihe; Xi, Bin; Yu, Zhibin; Zhou, Zhen; Chen, Xian

doi:10.1039/c9ta12235d

Cited by 57 publications

(55 citation statements)

References 69 publications

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“…As set out in step 1 of Figure , spray drying of the mixture of glucose, thiourea, and graphene oxide, and a following calcination led to the matrix of (N, S)‐RGO which reprint distinguished features adequately described in the previous report by this laboratory, [ 11 ] such as large specific surface area and pore volume.…”

Section: Resultsmentioning

confidence: 77%

“…Giving the presence of CS and CN bonding in Fourier transform infrared spectroscopy (FTIR) spectra (Figure S3, Supporting Information), as well as N 1s and S 2p signals in X‐ray photoelectron spectroscopy (XPS) investigation (Figure S4, Supporting Information), doping of nitrogen and sulfur is confirmed. [ 11 ]…”

Section: Resultsmentioning

confidence: 99%

“…For C 1s, the intense peak of 284.6 eV and two less intense ones of 285.1 and 285.7 eV are assigned to the CC, CN, and CS bonds, respectively. [ 11,16 ] A typical COH/OCO bond is observed at the binding energy of 288.2 eV in the S3, but shifts negatively to 287.8 eV in the ALD material 3, suggesting production of CON bond after reacting precursor t BuNH 2 with COH/OCO. [ 7a,11 ]…”

Section: Resultsmentioning

confidence: 99%

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A CoN‐based OER Electrocatalyst Capable in Neutral Medium: Atomic Layer Deposition as Rational Strategy for Fabrication

Guo

Zeng

Wan

et al. 2021

Adv Funct Materials

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Reported herein is an active and durable CoN‐containing oxygen evolution reaction (OER) electrocatalyst which efficiently functions in a neutral medium (pH ≈7). The composite material (N, S)‐RGO@CoN is synthesized by delicate atomic layer deposition (ALD) of CoN on a nitrogen and sulfur (N, S) co‐doped reduced graphene oxide (RGO) substrate. Representative results of the comprehensive study are: 1) The flower‐like sphere RGO substrate prepared by spray drying method features rich physical and chemical properties, which are beneficial for rapid mass/charge transfer to improve the intrinsic OER process; 2) the optimal ALD material for OER tests is afforded by tuning spray conditions and ALD parameters. Versatile structural and compositional characterizations confirm uniform growth and strong chemical coupling of nanostructured CoN on (N, S)‐RGO matrix; 3) the material is electrocatalytically active and durable in a neutral electrolyte, recording an OER overpotential of 220 mV at a current density of 10 mA cm−2 and stability of 20 h continuous catalysis at 20 mA cm−2 with nearly 100% Faradic efficiency; 4) Upon the experimental studies and density functional theory calculations, the eventual mechanism of remarkable OER activity conforms to the structural fate of ALD CoN electronic coupling to the carbon substrate.

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Section: Resultsmentioning

confidence: 77%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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A CoN‐based OER Electrocatalyst Capable in Neutral Medium: Atomic Layer Deposition as Rational Strategy for Fabrication

Guo

Zeng

Wan

et al. 2021

Adv Funct Materials

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“…After sulfurization, the XRD peaks (Figure 3c) of CF‐supported NCCS can be assigned to Ni 3 S 2 (JCPDS no. 44‐1418) [ 30 ] and Co 3 S 4 (JCPDS no. 42‐1448), [ 31 ] respectively.…”

Section: Resultsmentioning

confidence: 99%

Synergistic Interaction of Ternary Ni−Co−Cu Chalcogenides Confined in Nanosheets Array to Advance Supercapacitors and Solar Steam Generation

Zhu

Ren

et al. 2021

Solar RRL

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Copper foam (CF)‐supported 3D nanosheets array composed of ternary Ni−Co−Cu chalcogenides are prepared by a simple in situ formation process. Specifically, a highly electroactive Ni−Co binary sulfide in nanosheets is synthesized against the CF backbone, whereas the copper species migrate from the CF to the Ni−Co nanosheets, leading to the in situ formation of the ternary metallic sulfide (Ni−Co−Cu−S, NCCS). Due to the synergistic interaction of Ni, Co, and Cu sulfides confined in nanosheets, this NCCS material demonstrates good mechanical robustness, a large surface area, and enhanced electric conductivity. As a result, the NCCS exhibits a high specific capacitance (750 mF cm−2 at 100 mA cm−2) with good cycling performance (97.14% after 10 000 cycles) when used as supercapacitor electrodes. In addition, the 3D porous hierarchical nanostructure of NCCS provides nanoconfined water molecule channels to achieve high‐yield solar steam generation, delivering an enhanced evaporation rate of 2.48 kg m−2 h−1 under 1 sun irradiation.

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“…Ni 3 S 2 is not only low-cost but is also highly conductive. Guo et al synthesized a Ni 3 S 2 /(N, S)-rGO hybrid material [ 131 ]. The excellent effect brought by the N/S co-doping modification above-mentioned was still effective.…”

Section: Graphene-based Composite Materialsmentioning

confidence: 99%

Graphene-Based Nanomaterials as the Cathode for Lithium-Sulfur Batteries

2021

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The global energy crisis and environmental problems are becoming increasingly serious. It is now urgent to vigorously develop an efficient energy storage system. Lithium-sulfur batteries (LSBs) are considered to be one of the most promising candidates for next-generation energy storage systems due to their high energy density. Sulfur is abundant on Earth, low-cost, and environmentally friendly, which is consistent with the characteristics of new clean energy. Although LSBs possess numerous advantages, they still suffer from numerous problems such as the dissolution and diffusion of sulfur intermediate products during the discharge process, the expansion of the electrode volume, and so on, which severely limit their further development. Graphene is a two-dimensional crystal material with a single atomic layer thickness and honeycomb bonding structure formed by sp2 hybridization of carbon atoms. Since its discovery in 2004, graphene has attracted worldwide attention due to its excellent physical and chemical properties. Herein, this review summarizes the latest developments in graphene frameworks, heteroatom-modified graphene, and graphene composite frameworks in sulfur cathodes. Moreover, the challenges and future development of graphene-based sulfur cathodes are also discussed.

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Ni₃S₂ anchored to N/S co-doped reduced graphene oxide with highly pleated structure as a sulfur host for lithium–sulfur batteries

Abstract: As a sulfur host for the lithium–sulfur battery, Ni3S2 anchored to N/S co-doped RGO with a highly pleated structure has demonstrated the strong capture of polysulfides, exhibiting high reversible capacity and cycling stability.

Cited by 57 publications

References 69 publications

A CoN‐based OER Electrocatalyst Capable in Neutral Medium: Atomic Layer Deposition as Rational Strategy for Fabrication

A CoN‐based OER Electrocatalyst Capable in Neutral Medium: Atomic Layer Deposition as Rational Strategy for Fabrication

Synergistic Interaction of Ternary Ni−Co−Cu Chalcogenides Confined in Nanosheets Array to Advance Supercapacitors and Solar Steam Generation

Graphene-Based Nanomaterials as the Cathode for Lithium-Sulfur Batteries

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Ni3S2 anchored to N/S co-doped reduced graphene oxide with highly pleated structure as a sulfur host for lithium–sulfur batteries

Abstract: As a sulfur host for the lithium–sulfur battery, Ni3S2 anchored to N/S co-doped RGO with a highly pleated structure has demonstrated the strong capture of polysulfides, exhibiting high reversible capacity and cycling stability.

Cited by 57 publications

References 69 publications

A CoN‐based OER Electrocatalyst Capable in Neutral Medium: Atomic Layer Deposition as Rational Strategy for Fabrication

A CoN‐based OER Electrocatalyst Capable in Neutral Medium: Atomic Layer Deposition as Rational Strategy for Fabrication

Synergistic Interaction of Ternary Ni−Co−Cu Chalcogenides Confined in Nanosheets Array to Advance Supercapacitors and Solar Steam Generation

Graphene-Based Nanomaterials as the Cathode for Lithium-Sulfur Batteries

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Ni₃S₂ anchored to N/S co-doped reduced graphene oxide with highly pleated structure as a sulfur host for lithium–sulfur batteries