Rubik’s cube-like Ni3S4/CuS2 nanocomposite for high-performance supercapacitors

He, Yezeng; Zhang, Xiaolong; Wang, Shitong; Meng, Jiaxi; Sui, Yanwei; Wei, Fuxiang; Qi, Jiqiu; Meng, Qingkun; Ren, Yaojian; Zhuang, Dongdong

doi:10.1016/j.jallcom.2020.156312

Cited by 73 publications

(25 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…NiS 2 /Ni 3 S 4 was synthesized by a 4 h solvothermal method and explained in detail in Section . X-ray diffraction (XRD) was used to study the crystal structure of NiS 2 /Ni 3 S 4 (Figure A) and shows diffraction peaks at 2θ values corresponding to the planes of NiS 2 (JCPDS: 11-0099) − and Ni 3 S 4 (JCPDS: 00-047-1739). , In addition, peaks of α-S 8 in a small angle range (20–25°) are attributed to the byproduct of thioacetamide (TAA, S precursor) . X-ray photoelectron spectroscopy (XPS) was used to investigate the surface chemical state of NiS 2 /Ni 3 S 4 (Figure B–D).…”

Section: Resultsmentioning

confidence: 99%

Multistep Sulfur Leaching for the Development of a Highly Efficient and Stable NiS_x/Ni(OH)₂/NiOOH Electrocatalyst for Anion Exchange Membrane Water Electrolysis

Jiang

Hartmann

et al. 2022

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Nickel (poly)sulfides have been widely studied as anodic catalysts for alkaline water electrolysis owing to their diverse morphologies, high catalytic activities in the oxygen evolution reaction (OER), and low cost. To utilize low-cost and high-efficiency polysulfides with industry-relevant cycling stability, we develop a Ni-rich NiS x /Ni(OH)2/NiOOH catalyst derived from NiS2/Ni3S4 nanocubes. Ni-rich NiS x /Ni(OH)2/NiOOH shows improved OER catalytic activity (η = 374 mV@50 mA cm–2) and stability (0.1% voltage increase) after 65 h of a galvanostatic test at 10 mA cm–2 compared with commercial Ni/NiO and hydrothermally synthesized Ni(OH)2 (both show η > 460 mV@50 mA cm–2 along with 4.40 and 1.92% voltage increase, respectively). A water-splitting electrolyzer based on Pt/C||AF1-HNN8-50||NiS x /Ni(OH)2/NiOOH exhibits a current density of 1800 mA cm–2 at 2.0 V and 500 h high-rate stability at 1000 mA cm–2 with negligible attenuation of only 0.12 mV h–1. This work provides an understanding of truly stable species, intrinsic active phases of Ni polysulfides, their high-rate stability in a real cell, and sheds light on the development of stable chalcogenide-based anodic electrocatalysts for anion exchange membrane water electrolysis (AEMWE).

show abstract

Section: Resultsmentioning

confidence: 99%

Multistep Sulfur Leaching for the Development of a Highly Efficient and Stable NiS_x/Ni(OH)₂/NiOOH Electrocatalyst for Anion Exchange Membrane Water Electrolysis

Jiang

Hartmann

et al. 2022

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…Figure a shows comparative CV curves of NiS 2 , (Cu x Ni 1– x )S 2 , and CuS electrode, which display distinct Faradic redox peaks in the redox Faradic reaction course in 0–0.55 V, implying the battery-type characteristic , of (Cu x Ni 1– x )S 2 , (Cu x Ni 1– x )O, NiS 2 , and CuS. The faradaic redox of (Cu x Ni 1– x )S 2 is illustrated in the following formulas , …”

Section: Resultsmentioning

confidence: 99%

Tremella-like 2D Nickel–Copper Disulfide with Ultrahigh Capacity and Cyclic Retention for Hybrid Supercapacitors

Liu

2022

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

disulfides possess unique physical and chemical properties and are widely used in electronic and photoelectric devices. Tuning the composition and optimizing the structure of the disulfides are feasible approaches to designing target sulfides for hybrid supercapacitors. This work synthesizes the tremella-like nanosheet-connected (Cu x Ni 1−x )S 2 via solvothermal and sulfur-vapor vulcanization. The 2D (Cu x Ni 1−x )S 2 electrode performs a high reversible capacity (526.0 mA h g −1 at 1 A g −1 ), decent capacity retention (75.6%) at 10 A g −1 , and prolonged cyclic retention (94.4% over 15,000 cycles), which is higher than that of (Cu x Ni 1−x )O and monometallic sulfides of NiS 2 and CuS. The elevated electrochemical properties of (Cu x Ni 1−x )S 2 are attributed to the optimized composition with increased redox reaction, enlarged lattice distance, abundant active sites, and attractive electronic and ionic conductivity. Also, (Cu x Ni 1−x )S 2 and active carbon (AC) are assembled to form a hybrid supercapacitor (HSC). The (Cu x Ni 1−x )S 2 //AC HSC demonstrates a maximum specific capacitance of 231.0 F g −1 at 1 A g −1 and a high energy density of 82.4 W h kg −1 at a power density of 1.82 kW kg −1 . Outstanding cyclic retentions of 94.9 and 84.5% after 8000 and 10,000 cycles are also obtained. In conclusion, this result suggests a facile routine for preparing a novel 2D layer material of (Cu x Ni 1−x )S 2 with outstanding specific capacity and cycling performance for hybrid supercapacitors.

show abstract

“…3d, the characteristic peaks at 284.8 eV, 286.4 eV and 289.6 eV are ascribed to the CC, C–C and C–CO bonds, respectively. 16,56,57 To further demonstrate that carbon is present in the ZnS@C MRs, Raman spectroscopy was carried out (Fig. S7, ESI†).…”

Section: Resultsmentioning

confidence: 99%

“…Among the metal sulfide anodes, zinc sulfide (ZnS), with a high theoretical capacity and appropriate reaction voltage with lithium, has been mainly been considered as a candidate anode material for LIBs. 15–20 Unfortunately, the serious volume change upon the discharge/charge processes, which induces a significant structural change during repeated discharge/charge processes, leads to poor cycling and rate performance. 21–24 To overcome these problems, many methods have been carried out to enhance the electrochemical performance of the ZnS anode, such as a rational structure design and hybridization with conductive carbonaceous materials, 21,25–32 including yolk-shell ZnS@C, ZnSe@C core–shell nanorods and pitaya-structured FeS 2 spheres.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of core–shell ZnS@C microrods as advanced anode materials for lithium-ion batteries

Zhang

Nong

et al. 2022

New J. Chem.

View full text Add to dashboard Cite

show abstract

Rubik’s cube-like Ni3S4/CuS2 nanocomposite for high-performance supercapacitors

Cited by 73 publications

References 39 publications

Multistep Sulfur Leaching for the Development of a Highly Efficient and Stable NiS_x/Ni(OH)₂/NiOOH Electrocatalyst for Anion Exchange Membrane Water Electrolysis

Multistep Sulfur Leaching for the Development of a Highly Efficient and Stable NiS_x/Ni(OH)₂/NiOOH Electrocatalyst for Anion Exchange Membrane Water Electrolysis

Tremella-like 2D Nickel–Copper Disulfide with Ultrahigh Capacity and Cyclic Retention for Hybrid Supercapacitors

Synthesis of core–shell ZnS@C microrods as advanced anode materials for lithium-ion batteries

Contact Info

Product

Resources

About

Rubik’s cube-like Ni3S4/CuS2 nanocomposite for high-performance supercapacitors

Cited by 73 publications

References 39 publications

Multistep Sulfur Leaching for the Development of a Highly Efficient and Stable NiSx/Ni(OH)2/NiOOH Electrocatalyst for Anion Exchange Membrane Water Electrolysis

Multistep Sulfur Leaching for the Development of a Highly Efficient and Stable NiSx/Ni(OH)2/NiOOH Electrocatalyst for Anion Exchange Membrane Water Electrolysis

Tremella-like 2D Nickel–Copper Disulfide with Ultrahigh Capacity and Cyclic Retention for Hybrid Supercapacitors

Synthesis of core–shell ZnS@C microrods as advanced anode materials for lithium-ion batteries

Contact Info

Product

Resources

About

Multistep Sulfur Leaching for the Development of a Highly Efficient and Stable NiS_x/Ni(OH)₂/NiOOH Electrocatalyst for Anion Exchange Membrane Water Electrolysis

Multistep Sulfur Leaching for the Development of a Highly Efficient and Stable NiS_x/Ni(OH)₂/NiOOH Electrocatalyst for Anion Exchange Membrane Water Electrolysis