MOF-derived spherical NixSy/carbon with B-doping enabling high supercapacitive performance

Article Chemistry, Physical

Coordination agent-dominated phase control of nickel sulfide for high-performance hybrid supercapacitor

Qin Hu et al.

Summary: This study introduces a novel phase modulation strategy dominated by coordination agent, which successfully drives phase transformation from composite to pure phase with enhanced performance.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2022)

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Article Chemistry, Physical

Polypyrrole-coated Boron-doped Nickel-Cobalt sulfide on electrospinning carbon nanofibers for high performance asymmetric supercapacitors

Feng Xie et al.

Summary: In this study, a chemical redox method combined with electrospinning technology was used to adjust the crystal and electronic structure of cobalt-nickel sulfide, resulting in high specific capacity and cycle stability. The electrode material showed excellent electrochemical properties when applied in an asymmetric supercapacitor.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2022)

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Article Chemistry, Physical

Supercapacitor electrode with high charge density based on boron-doped porous carbon derived from covalent organic frameworks

Shigeyuki Umezawa et al.

Summary: A novel method for preparing boron-doped porous carbon was developed by direct carbonization of COF-5. The boron-doped carbon showed superior performance in energy storage, with higher specific capacitance and better cycling stability compared to conventional activated carbon.

CARBON (2021)

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Article Energy & Fuels

Significantly improved electrochemical characteristics of nickel sulfide nanoplates using graphene oxide thin film for supercapacitor applications

Muhammad Faisal Iqbal et al.

Summary: In this study, nickel sulfide nanoplates on graphene oxide thin film (GO-NSNPs) were fabricated on nickel foam using a hydrothermal method. The GO-NSNPs electrodes exhibited excellent electrochemical performance, showing potential for high-performance supercapacitor applications.

JOURNAL OF ENERGY STORAGE (2021)

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Article Chemistry, Physical

SnS2 nanodots decorated on RGO sheets with enhanced pseudocapacitive performance for asymmetric supercapacitors

Yan Shi et al.

Summary: The SnS2/rGO composite with sphere-like structure shows high specific capacitance and excellent cyclic stability. As the positive electrode material for ASC, it exhibits extremely high capacitance retention and good charge-discharge performance.

JOURNAL OF ALLOYS AND COMPOUNDS (2021)

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Article Nanoscience & Nanotechnology

Advanced Carbon-Nickel Sulfide Hybrid Nanostructures: Extending the Limits of Battery-Type Electrodes for Redox-Based Supercapacitor Applications

Neelakandan M. Santhosh et al.

Summary: The study demonstrates the successful fabrication of metal sulfide-carbon nanostructure electrode materials with ultra-high capacity and outstanding rate capability. By combining vertically aligned carbon nanotubes with single-crystal metallic nickel grains, the hybrid binder-free electrodes exhibit remarkable electrochemical performance compared to other reported Ni3S2-based electrodes, showing high specific capacity, retention rate at high current densities, and cycling stability.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Chemistry, Physical

Multi-interface collaboration of graphene cross-linked NiS-NiS2-Ni3S4 polymorph foam towards robust hydrogen evolution in alkaline electrolyte

Haiqing Wang et al.

Summary: This study presents a multi-interface engineering strategy to achieve a delicate balance in the kinetics of alkaline hydrogen evolution reaction (HER). The graphene cross-linked three-phase nickel sulfide foam exhibits superior catalytic activity in alkaline electrolyte and is better than most of the recently reported metal sulfides catalysts. Density functional theory (DFT) calculations confirm the favorable hydrogen adsorption and metallic nature of the electrocatalyst due to the interfaces between nickel sulfides and cross-linked graphene.

NANO RESEARCH (2021)

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Article Nanoscience & Nanotechnology

Boron-Doped Trimetallic Cu-Ni-Co Oxide Nanoneedles for Supercapacitor Application

Iftikhar Hussain et al.

Summary: Doping with boron has been proven to improve stability and performance of Cu-Ni-Co oxide electrodes. One-dimensional vertically aligned nanoneedle-like structures can be self-organized through boron doping, leading to superior electrochemical performance. The as-assembled CNCO-D-SO//rGO hybrid supercapacitor device shows higher storage capacity, better stability, conductivity, and time-saving fabrication, suggesting great potential for next-generation energy storage applications.

ACS APPLIED NANO MATERIALS (2021)

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Article Chemistry, Inorganic & Nuclear