Hybrid Co3O4/Co9S8 Nanowires for High-Performance Asymmetric Supercapacitors

2020 ◽  
Vol 15 (2) ◽  
pp. 237-242 ◽  
Author(s):  
Yongli Tong ◽  
Xinyu Cheng ◽  
Xiaoyun Liu ◽  
Dongli Qi ◽  
Baoqian Chi ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Nickel Foam ◽  
High Specific Capacitance ◽  
Energy Storage Materials ◽  
Step Method ◽  
Asymmetric Supercapacitors ◽  
One Dimensional ◽  
Prepared Material ◽  
Vulcanization Process

We successfully synthesize hierarchical Co3O4@Co9S8 nanowires on nickel foam by a facile two-step method. The as-prepared samples show one-dimensional nanowires decorated with uneven surface after vulcanization process with pure Co3O4 nanowires to form Co3O4 @Co9S8 composite, which exhibit high specific capacitance of 2667 F g–1 at 12 A g–1, maintaining 76.78% capacitance retention of initial capacitance. The assembled asymmetric supercapacitor (ASC) device shows excellent capability of energy storage and power output with an energy density of 267.9 mW h cm–3 at power density of 7.5 W cm–3 and 187.5 mW h cm–3 at 15 W cm–3. In addition, it exhibits excellent cycling capability with 84.2% retention after 6000 cycles. Therefore, the as-prepared material can be used as promising energy storage materials.

Hybrid ZnCo2O4@Co3S4 Nanowires for High-Performance Asymmetric Supercapacitors

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.

CoOOH ultrathin nanoflake arrays aligned on nickel foam: fabrication and use in high-performance supercapacitor devices

2016 ◽  
Vol 4 (33) ◽  
pp. 12833-12840 ◽  
Author(s):  
Dongbin Zhang ◽  
Xianggui Kong ◽  
Yufei Zhao ◽  
Meihong Jiang ◽  
Xiaodong Lei
Keyword(s):  
Graphene Oxide ◽  
Energy Storage ◽  
Reduced Graphene Oxide ◽  
High Performance ◽  
Nickel Foam ◽  
Asymmetric Supercapacitor ◽  
Energy Storage Devices ◽  
Step Method ◽  
Storage Devices ◽  
Reduced Graphene

A CoOOH/NF ultrathin nanoflake array is fabricated by a facile two-step method. Furthermore, an asymmetric supercapacitor was assembled with CoOOH/NF and reduced graphene oxide, displaying excellent properties as energy storage devices.

Construction of MOF-derived hollow Ni–Zn–Co–S nanosword arrays as binder-free electrodes for asymmetric supercapacitors with high energy density

Nanoscale ◽  
2018 ◽  
Vol 10 (29) ◽  
pp. 14171-14181 ◽  
Author(s):  
Youzhang Huang ◽  
Liang Quan ◽  
Tianqing Liu ◽  
Qidi Chen ◽  
Daoping Cai ◽  
...  
Keyword(s):  
Energy Density ◽  
High Performance ◽  
Nickel Foam ◽  
High Energy ◽  
High Energy Density ◽  
Great Promise ◽  
Step Method ◽  
Asymmetric Supercapacitors ◽  
Binder Free

Mesoporous and hollow Ni–Zn–Co–S nanosword arrays (NSAs) have been successfully grown on nickel foam (NF) through a simple two-step method, which would hold great promise for high-performance supercapacitors.

scholarly journals High valence state metal-ion doped Fe-Ni layered double hydroxide for oxygen evolution electrocatalyst and asymmetric supercapacitors

2022 ◽  
Author(s):  
Wenke Shao ◽  
Qiufan Wang ◽  
Can Huang ◽  
Daohong Zhang
Keyword(s):  
Energy Storage ◽  
Layered Double Hydroxide ◽  
Metal Ion ◽  
Energy Storage Materials ◽  
Asymmetric Supercapacitors ◽  
One Dimensional ◽  
Nickel Iron ◽  
Multiple Components ◽  
High Valence State ◽  
Double Hydroxide

Delicate design of nanostructures consisting of multiple components is an important strategy for energy storage materials. In this work, cobalt-doped nickel-iron layered double hydroxide (Fe-Ni3Co2 LDH) assembling from one-dimensional (1D)...

Core-shell nanostructured Zn-Co-O@CoS arrays for high-performance hybrid supercapacitors

2021 ◽  
Author(s):  
Yi He ◽  
Lei Xie ◽  
Shixiang Ding ◽  
Yujia Long ◽  
Xinyi Zhou ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Energy Storage ◽  
Active Sites ◽  
High Performance ◽  
Electronic Conductivity ◽  
Wide Distribution ◽  
Energy Storage Materials ◽  
Core Shell ◽  
Storage Materials ◽  
Hybrid Supercapacitors

Although the zinc oxide (ZnO) with wide distribution is one of the most attractive energy storage materials, the low electronic conductivity and insufficient active sites of bulk ZnO increase the...

scholarly journals Fabrication of Hierarchical NiMoO4/NiMoO4 Nanoflowers on Highly Conductive Flexible Nickel Foam Substrate as a Capacitive Electrode Material for Supercapacitors with Enhanced Electrochemical Performance

Energies ◽  
2019 ◽  
Vol 12 (6) ◽  
pp. 1143 ◽  
Author(s):  
Anil Yedluri ◽  
Tarugu Anitha ◽  
Hee-Je Kim
Keyword(s):  
Energy Density ◽  
Electrochemical Performance ◽  
Specific Capacitance ◽  
Electrode Material ◽  
High Performance ◽  
Nickel Foam ◽  
High Specific Capacitance ◽  
High Energy ◽  
High Energy Density ◽  
Charge Discharge

Hierarchical NiMoO4/NiMoO4 nanoflowers were fabricated on highly conductive flexible nickel foam (NF) substrates using a facile hydrothermal method to achieve rapid charge-discharge ability, high energy density, long cycling lifespan, and higher flexibility for high-performance supercapacitor electrode materials. The synthesized composite electrode material, NF/NiMoO4/NiMoO4 with a nanoball-like NF/NiMoO4 structure on a NiMoO4 surface over a NF substrate, formed a three-dimensional interconnected porous network for high-performance electrodes. The novel NF/NiMoO4/NiMoO4 nanoflowers not only enhanced the large surface area and increased the electrochemical activity, but also provided an enhanced rapid ion diffusion path and reduced the charge transfer resistance of the entire electrode effectively. The NF/NiMoO4/NiMoO4 composite exhibited significantly improved supercapacitor performance in terms of a sustained cycling life, high specific capacitance, rapid charge-discharge capability, high energy density, and good rate capability. Electrochemical analysis of the NF/NiMoO4/NiMoO4 nanoflowers fabricated on the NF substrate revealed ultra-high electrochemical performance with a high specific capacitance of 2121 F g−1 at 12 mA g−1 in a 3 M KOH electrolyte and 98.7% capacitance retention after 3000 cycles at 14 mA g−1. This performance was superior to the NF/NiMoO4 nanoball electrode (1672 F g−1 at 12 mA g−1 and capacitance retention 93.4% cycles). Most importantly, the SC (NF/NiMoO4/NiMoO4) device displayed a maximum energy density of 47.13 W h kg−1, which was significantly higher than that of NF/NiMoO4 (37.1 W h kg−1). Overall, the NF/NiMoO4/NiMoO4 composite is a suitable material for supercapacitor applications.

The growth and assembly of the multidimensional hierarchical Ni3S2 for aqueous asymmetric supercapacitors

CrystEngComm ◽  
2015 ◽  
Vol 17 (24) ◽  
pp. 4495-4501 ◽  
Author(s):  
Bin Yang ◽  
Lei Yu ◽  
Qi Liu ◽  
Jingyuan Liu ◽  
Wanlu Yang ◽  
...  
Keyword(s):  
Thin Film ◽  
Energy Storage ◽  
High Performance ◽  
Electrode Materials ◽  
Hydrothermal Process ◽  
Nanorod Arrays ◽  
Asymmetric Supercapacitors ◽  
One Step ◽  
Step Growth

We synthesized the mushroom-like Ni3S2 with step by step growth that is the thin film growing on the nanorod arrays with one-step hydrothermal process, which is a novel ways to fabricate the multidimensional hierarchical electrode materials for high performance energy storage.

Hierarchical Ni-Co-S@Ni-W-O core–shell nanosheet arrays on nickel foam for high-performance asymmetric supercapacitors

Nano Research ◽  
2018 ◽  
Vol 11 (3) ◽  
pp. 1415-1425 ◽  
Author(s):  
Weidong He ◽  
Zhifu Liang ◽  
Keyu Ji ◽  
Qingfeng Sun ◽  
Tianyou Zhai ◽  
...  
Keyword(s):  
High Performance ◽  
Nickel Foam ◽  
Core Shell ◽  
Asymmetric Supercapacitors ◽  
Nanosheet Arrays

scholarly journals Dissected carbon nanotubes functionalized by 1-hydroxyanthraquinone for high-performance asymmetric supercapacitors

RSC Advances ◽  
2017 ◽  
Vol 7 (76) ◽  
pp. 48341-48353 ◽  
Author(s):  
Xia Yang ◽  
Yuying Yang ◽  
Quancai Zhang ◽  
Xiaotong Wang ◽  
Yufeng An ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Graphene Oxide ◽  
Specific Capacitance ◽  
Reduced Graphene Oxide ◽  
High Performance ◽  
Rate Capability ◽  
High Specific Capacitance ◽  
Covalent Modification ◽  
Asymmetric Supercapacitors ◽  
Reduced Graphene

1-Hydroxyanthraquinone (HAQ) is selected to functionalize the dissected carbon nanotubes (rDCNTs) with reduced graphene oxide layers through non-covalent modification. The composite achieves high specific capacitance and ultrahigh rate capability.

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