Hierarchical NiCo2O4 nanosheets@hollow microrod arrays for high-performance asymmetric supercapacitors

2014 ◽  
Vol 2 (13) ◽  
pp. 4706-4713 ◽  
Author(s):  
Xue-Feng Lu ◽  
Dong-Jun Wu ◽  
Run-Zhi Li ◽  
Qi Li ◽  
Sheng-Hua Ye ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Thermal Annealing ◽  
High Performance ◽  
Cycle Stability ◽  
Asymmetric Supercapacitors ◽  
Environmental Friendly ◽  
Nico2o4 Nanosheets

Novel NiCo2O4 NSs@HNRAs are fabricated via a simple and environmental friendly template-assisted electrodeposition followed by thermal annealing and they exhibit predominant electrochemical properties and long-term cycle stability.

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.

Fast lithium-ion storage of Nb2O5 nanocrystals in situ grown on carbon nanotubes for high-performance asymmetric supercapacitors

RSC Advances ◽  
2015 ◽  
Vol 5 (51) ◽  
pp. 41179-41185 ◽  
Author(s):  
Xiaolei Wang ◽  
Ge Li ◽  
Ricky Tjandra ◽  
Xingye Fan ◽  
Xingcheng Xiao ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
High Performance ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Energy ◽  
Asymmetric Supercapacitors ◽  
Ion Storage ◽  
Energy And Power Density

Nanocomposites of Nb2O5 NCs in situ grown on CNTs are successfully developed with excellent rate capability, leading to the successful fabrication of asymmetric supercapacitors with high energy and power density and long-term cycling stability.

Three-dimensional Co3O4@C@Ni3S2 sandwich-structured nanoneedle arrays: towards high-performance flexible all-solid-state asymmetric supercapacitors

2015 ◽  
Vol 3 (31) ◽  
pp. 16150-16161 ◽  
Author(s):  
Dezhi Kong ◽  
Chuanwei Cheng ◽  
Ye Wang ◽  
Jen It Wong ◽  
Yaping Yang ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Solid State ◽  
High Performance ◽  
Three Dimensional ◽  
Negative Electrode ◽  
High Energy ◽  
High Energy Density ◽  
Asymmetric Supercapacitor ◽  
Cycle Stability ◽  
Asymmetric Supercapacitors

A novel asymmetric supercapacitor composed of Co3O4@C@Ni3S2 NNAs as the positive electrode and activated carbon (AC) as the negative electrode can deliver a high energy density and excellent long cycle stability.

Engineering Rhynchostylis retusa-like heterostructured α-nickel molybdate with enhanced redox properties for high-performance rechargeable asymmetric supercapacitors

2019 ◽  
Vol 7 (47) ◽  
pp. 26893-26904 ◽  
Author(s):  
Ganji Seeta Rama Raju ◽  
Eluri Pavitra ◽  
Goli Nagaraju ◽  
Nilesh R. Chodankar ◽  
Sujaya Kumar Vishwanath ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
High Performance ◽  
Cost Effective ◽  
Single Step ◽  
Redox Properties ◽  
Asymmetric Supercapacitors ◽  
Wet Chemistry ◽  
Nickel Molybdate ◽  
Superior Electrochemical Properties

Rhynchostylis retusa-like α-NiMoO4 was synthesized using a simple, single-step, and cost-effective wet-chemistry approach, and it exhibited the superior electrochemical properties.

The synthesis of shape-controlled α-MoO3/graphene nanocomposites for high performance supercapacitors

2015 ◽  
Vol 39 (11) ◽  
pp. 8780-8786 ◽  
Author(s):  
Jinhua Zhou ◽  
Juan Song ◽  
Huihua Li ◽  
Xiaomiao Feng ◽  
Zhendong Huang ◽  
...  
Keyword(s):  
Specific Capacitance ◽  
High Performance ◽  
High Specific Capacitance ◽  
Cycle Stability ◽  
Graphene Nanocomposites ◽  
Shape Controlled

Novel nanoflake-like α-MoO3/graphene nanocomposites were synthesized and exhibited a high specific capacitance of up to 360 F g−1 and excellent long term cycle stability.

Hierarchical multi-shelled nanoporous mixed copper cobalt phosphide hollow microspheres as a novel advanced electrode for high-performance asymmetric supercapacitors

2017 ◽  
Vol 5 (35) ◽  
pp. 18429-18433 ◽  
Author(s):  
Seyyed Ebrahim Moosavifard ◽  
Saeid Kamari Kaverlavani ◽  
Javad Shamsi ◽  
Ali Bakouei
Keyword(s):  
Electrochemical Properties ◽  
High Performance ◽  
Hollow Microspheres ◽  
Asymmetric Supercapacitors ◽  
Cobalt Phosphide ◽  
First Time ◽  
Superior Electrochemical Properties

Hierarchical multi-shelled nanoporous mixed copper cobalt phosphide microspheres have been for the first time developed as a novel advanced electrode with superior electrochemical properties.

Rational design of graphene/porous carbon aerogels for high-performance flexible all-solid-state supercapacitors

2014 ◽  
Vol 2 (28) ◽  
pp. 10895-10903 ◽  
Author(s):  
Hong-Fei Ju ◽  
Wei-Li Song ◽  
Li-Zhen Fan
Keyword(s):  
Solid State ◽  
Porous Carbon ◽  
High Performance ◽  
Rational Design ◽  
Electrode Materials ◽  
Carbon Aerogels ◽  
Cycle Stability ◽  
Green Process ◽  
Excellent Electrochemical Performance

Graphene/porous carbon aerogels were rationally designed by a simple green process, exhibiting excellent electrochemical performance and long-term cycle stability as the electrode materials in flexible all-solid-state supercapacitors.

Electrospun NiO nanofibers as cathode materials for high performance asymmetric supercapacitors

2015 ◽  
Vol 3 (14) ◽  
pp. 7513-7522 ◽  
Author(s):  
Muhamed Shareef Kolathodi ◽  
Milan Palei ◽  
Tirupattur Srinivasan Natarajan
Keyword(s):  
Electrochemical Properties ◽  
Cathode Materials ◽  
High Performance ◽  
Asymmetric Supercapacitors

Highly granulated NiO nanofibers were prepared by electrospinning and their electrochemical properties as cathode materials were investigated for asymmetrical supercapacitors.

NiCo2O4 nanosheets grown on interconnected honeycomb-like porous biomass carbon for high performance asymmetric supercapacitors

2018 ◽  
Vol 42 (11) ◽  
pp. 8478-8484 ◽  
Author(s):  
Dongxuan Guo ◽  
Li Zhang ◽  
Xiumei Song ◽  
Lichao Tan ◽  
Huiyuan Ma ◽  
...  
Keyword(s):  
High Performance ◽  
Hydrothermal Process ◽  
Biomass Carbon ◽  
Asymmetric Supercapacitors ◽  
Nico2o4 Nanosheets ◽  
Facile Hydrothermal Process

An interconnected honeycomb-like structure of the HLPBC/NiCo2O4 composite was successfully prepared by carbonization combined with a facile hydrothermal process.

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