Constructing high-performance electrode materials using core–shell ZnCo2O4@PPy nanowires for hybrid batteries and water splitting

Heterogeneity can be used as a promising method to improve the electrochemical performance of electrode materials; thus, ZnCo2O4@PPy samples were prepared using a facile hydrothermal route and an electrochemical deposition process.

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Hierarchical CNT@NiCo2O4 core–shell hybrid nanostructure for high-performance supercapacitors

Journal of Materials Chemistry A ◽

10.1039/c4ta01235f ◽

2014 ◽

Vol 2 (29) ◽

pp. 11509-11515 ◽

Cited By ~ 84

Author(s):

Feng Cai ◽

Yiran Kang ◽

Hongyuan Chen ◽

Minghai Chen ◽

Qingwen Li

Keyword(s):

High Performance ◽

Electrode Materials ◽

Deposition Process ◽

Core Shell ◽

Hybrid Nanostructure ◽

One Dimensional

Ultrathin NiCo2O4 nanosheets directly grown on one-dimensional CNTs, as high-performance electrode materials for supercapacitors, were synthesized through a facile chemical co-deposition process combined with post-calcination in air.

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Enhanced electrochemical performance of hybrid SnO2@MOx (M = Ni, Co, Mn) core–shell nanostructures grown on flexible carbon fibers as the supercapacitor electrode materials

Journal of Materials Chemistry A ◽

10.1039/c4ta06339b ◽

2015 ◽

Vol 3 (7) ◽

pp. 3676-3682 ◽

Cited By ~ 63

Author(s):

Yang Liu ◽

Yang Jiao ◽

Bosi Yin ◽

Siwen Zhang ◽

Fengyu Qu ◽

...

Keyword(s):

Electrochemical Performance ◽

Carbon Fibers ◽

High Performance ◽

Electrode Materials ◽

Core Shell ◽

Carbon Cloth ◽

Supercapacitor Electrode ◽

Shell Nanostructures ◽

Supercapacitor Electrode Materials ◽

Enhanced Electrochemical Performance

In this paper, hierarchical SnO2@MOx (SnO2@NiO, SnO2@Co3O4, SnO2@MnO2) heterostructures grown on carbon cloth (CC) for high performance supercapacitors are fabricated by a two-step solution-based method.

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Self-assembly synthesis of nitrogen-doped mesoporous carbons used as high-performance electrode materials in lithium-ion batteries and supercapacitors

New Journal of Chemistry ◽

10.1039/c7nj02532g ◽

2017 ◽

Vol 41 (21) ◽

pp. 12901-12909 ◽

Cited By ~ 11

Author(s):

Chunfeng Shao ◽

Ziqiang Wang ◽

Errui Wang ◽

Shujun Qiu ◽

Hailiang Chu ◽

...

Keyword(s):

Electrochemical Performance ◽

Lithium Ion Batteries ◽

Self Assembly ◽

High Performance ◽

Electrode Materials ◽

Lithium Ion ◽

Mesoporous Carbons ◽

Nitrogen Doped ◽

First Time ◽

Enhanced Electrochemical Performance

Guanine was, for the first time, used as a nitrogen source during the synthesis of nitrogen-doped porous carbons (NMCs) with enhanced electrochemical performance.

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Highly ordered nanoscale phosphomolybdate-grafted polyaniline/metal hybrid layered structures prepared via secondary sputtering phenomenon as high-performance pseudocapacitor electrodes

Physica Scripta ◽

10.1088/1402-4896/ac45a8 ◽

2021 ◽

Author(s):

Eun Seop Yoon ◽

Bong Gill Choi ◽

Hwan-Jin Jeon

Keyword(s):

Electron Transfer ◽

Aspect Ratio ◽

Electrochemical Performance ◽

High Aspect Ratio ◽

High Performance ◽

Electrode Materials ◽

Rate Capability ◽

High Specific Capacitance ◽

High Rate ◽

Large Area

Abstract The development of energy storage electrode materials is important for enhancing the electrochemical performance of supercapacitors. Despite extensive research on improving electrochemical performance with polymer-based materials, electrode materials with micro/nanostructures are needed for fast and efficient ion and electron transfer. In this work, highly ordered phosphomolybdate (PMoO)-grafted polyaniline (PMoO-PAI) deposited onto Au hole-cylinder nanopillar arrays is developed for high-performance pseudocapacitors. The three-dimensional nanostructured arrays are easily fabricated by secondary sputtering lithography, which has recently gained attention and features a high resolution of 10 nm, a high aspect ratio greater than 20, excellent uniformity/accuracy/precision, and compatibility with large area substrates. These 10nm scale Au nanostructures with a high aspect ratio of ~30 on Au substrates facilitate efficient ion and electron transfer. The resultant PMoO-PAI electrode exhibits outstanding electrochemical performance, including a high specific capacitance of 114 mF/cm2, a high-rate capability of 88%, and excellent long-term stability.

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Hierarchically 3D Nanoporous Structured Co9S8@Nix:Moy–Se Core–shell Nanowire Arrays Electrode for the High-performance Asymmetric Supercapacitors

Journal of Materials Chemistry A ◽

10.1039/d1ta08742h ◽

2021 ◽

Author(s):

Dai Jiu Yi ◽

Soram Bobby Singh ◽

Nam Hoon Kim ◽

Joong Hee Lee

Keyword(s):

Energy Conversion ◽

High Performance ◽

Rational Design ◽

Electrode Materials ◽

Storage Systems ◽

Nanowire Arrays ◽

Core Shell ◽

Good Strategy ◽

Free Standing ◽

Asymmetric Supercapacitors

The rational design of free-standing hierarchic core–shell nanoporous architectures is a good strategy for fabricating next-generation electrode materials for application to electrochemical energy conversion/storage systems. Herein, hierarchical core–shell 3D Co9S8@Nix:Moy–Se...

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Hybrid ZnCo2O4@Co3S4 Nanowires for High-Performance Asymmetric Supercapacitors

Journal of Nanoelectronics and Optoelectronics ◽

10.1166/jno.2020.2894 ◽

2020 ◽

Vol 15 (12) ◽

pp. 1552-1558

Author(s):

Yongli Tong ◽

Xinyu Cheng ◽

Dongli Qi ◽

Baoqian Chi ◽

Weiqiang Zhang

Keyword(s):

High Performance ◽

Reaction Path ◽

Nickel Foam ◽

Energy Storage Materials ◽

Electrochemical Performances ◽

Hydrothermal Route ◽

Asymmetric Supercapacitors ◽

High Area ◽

Facile Hydrothermal Route

We successfully fabricate hierarchical ZnCo2O4@Co3S4 nanowires directly supported on nickel foam by a facile hydrothermal route. The as-synthesized product possesses large specific surface area and short reaction path, which result in superior electrochemical performances as the electrode of supercapacitor (SC). The obtained electrode material shows high area capacitance of 2.02 C g-1 at current density of 0.8 A g-1 with 95.3% retention of initial capacitance after 6000 cycles. Moreover, the assembled asymmetric supercapacitor (ASC) device using ZnCo2O4@Co3S4 nanowires as anode material displays noticeable electrochemical capability with an energy density of 79.8 mW h g-1 at power density of 1795 W kg-1 and 73.2 mW h g-1 at 9760 W kg-1. In addition, the device shows remarkable cycling capability, maintaining 82.2% retention after long-term cycles. It reveals the as-fabricated material would be promising energy storage materials.

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Design of three dimensional hybrid Co3O4@NiMoO4 core/shell arrays grown on carbon cloth as high-performance supercapacitors

RSC Advances ◽

10.1039/c5ra28077j ◽

2016 ◽

Vol 6 (17) ◽

pp. 13957-13963 ◽

Cited By ~ 19

Author(s):

Yongfeng Li ◽

Hui Wang ◽

Jianming Jian ◽

Yun Fan ◽

Lin Yu ◽

...

Keyword(s):

Electrochemical Performance ◽

High Performance ◽

Three Dimensional ◽

Core Shell ◽

Carbon Cloth ◽

Hybrid Nanostructure ◽

Structured Materials

Electrodes with rationally designed hybrid nanostructure composites can have superior electrochemical performance for supercapacitors to single structured materials.

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Synthesis and Electrochemical Performance of Porous Carbon/Carbon Electrode with Core/Shell Structure

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.123-125.1099 ◽

2010 ◽

Vol 123-125 ◽

pp. 1099-1102

Author(s):

Ki Seok Kim ◽

Soo Jin Park

Keyword(s):

Electrochemical Performance ◽

Porous Carbon ◽

Shell Structure ◽

Electrode Materials ◽

In Situ Polymerization ◽

High Surface ◽

Hollow Structure ◽

Core Shell ◽

Carbon Electrode ◽

Core Shell Structure

Recently core/shell nanostructures including nanotubes, nanowires, and nanofibers have a considerable attension because multiple or enhanced functionality can be obtained by the synergistic effect of different materials in the formation of a core/shell structure. In this work, porous carbon/carbon core/shell carbon electrode (P-C/C-CE) composed of core graphene and disordered shells were prepared to obtain a new type of carbon electrode materials. The disordered carbon shells were prepared by coating of polyaniline onto the graphene by in-situ polymerization in the presence of nano-sized silica and subsequent carbonization at 850°C. After carbonization, P-C/C-CE showed the hollow structure and crystallinity. In addition, P-C/C-CE exhibited superior electrochemical performance compared to graphene and graphene/PANI composites, which was attributed to the high surface area of P-C/C-CE and the presence of nitrogen groups formed onto carbon electrode after the carbonization of shell polyaniline.

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