MOF-derived hierarchical core-shell hollow iron-cobalt sulfides nanoarrays on Ni foam with enhanced electrochemical properties for high energy density asymmetric supercapacitors

2019 ◽  
Vol 323 ◽  
pp. 134826 ◽  
Author(s):  
Kai Le ◽  
Mengjiao Gao ◽  
Wei Liu ◽  
Jiurong Liu ◽  
Zhou Wang ◽  
...  
Keyword(s):  
Energy Density ◽  
Electrochemical Properties ◽  
High Energy ◽  
High Energy Density ◽  
Core Shell ◽  
Ni Foam ◽  
Asymmetric Supercapacitors ◽  
Iron Cobalt

Advanced asymmetric supercapacitors based on CNT@Ni(OH)2 core–shell composites and 3D graphene networks

2015 ◽  
Vol 3 (38) ◽  
pp. 19545-19555 ◽  
Author(s):  
Huan Yi ◽  
Huanwen Wang ◽  
Yuting Jing ◽  
Tianquan Peng ◽  
Yiran Wang ◽  
...  
Keyword(s):  
Energy Density ◽  
Power Density ◽  
High Power ◽  
Nickel Hydroxide ◽  
High Energy ◽  
High Energy Density ◽  
Core Shell ◽  
High Power Density ◽  
Asymmetric Supercapacitors ◽  
3D Graphene

Asymmetric supercapacitors with CNT@nickel hydroxide nanosheet composites and 3-D graphene networks demonstrated a high energy density (∼44.0 W h kg−1) and high power density (∼16 kW kg−1) in aqueous KOH electrolyte.

In situ growth of NiCo2S4@Ni3V2O8 on Ni foam as a binder-free electrode for asymmetric supercapacitors

2016 ◽  
Vol 4 (15) ◽  
pp. 5669-5677 ◽  
Author(s):  
Lengyuan Niu ◽  
Yidan Wang ◽  
Fengping Ruan ◽  
Cheng Shen ◽  
Shen Shan ◽  
...  
Keyword(s):  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Asymmetric Supercapacitor ◽  
High Power Density ◽  
In Situ Growth ◽  
Ni Foam ◽  
Asymmetric Supercapacitors ◽  
Binder Free

A NiCo2S4@Ni3V2O8//AC asymmetric supercapacitor was successfully fabricated and it can deliver both high energy density and high power density.

Growth of CuCo2O4@MnMoO4 core/shell nanosheet arrays for high energy density asymmetric supercapacitors

2020 ◽  
Vol 341 ◽  
pp. 135893 ◽  
Author(s):  
Sanming Chen ◽  
Shiqiang Cui ◽  
Sundaram Chandrasekaran ◽  
Chong Ke ◽  
Zhongfa Li ◽  
...  
Keyword(s):  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Core Shell ◽  
Asymmetric Supercapacitors ◽  
Nanosheet Arrays

Hierarchical NiCo2O4@Ni(OH)2 core-shell nanoarrays as advanced electrodes for asymmetric supercapacitors with high energy density

2019 ◽  
Vol 771 ◽  
pp. 784-792 ◽  
Author(s):  
Ping Xia ◽  
Qiyuan Wang ◽  
Yintao Wang ◽  
Wei Quan ◽  
Deli Jiang ◽  
...  
Keyword(s):  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Core Shell ◽  
Asymmetric Supercapacitors

Ultrathin Ni-MOF nanosheet arrays grown on polyaniline decorated Ni foam as an advanced electrode for asymmetric supercapacitors with high energy density

2019 ◽  
Vol 48 (13) ◽  
pp. 4119-4123 ◽  
Author(s):  
Qiuhui Cheng ◽  
Kai Tao ◽  
Xue Han ◽  
Yujing Yang ◽  
Zheng Yang ◽  
...  
Keyword(s):  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Ni Foam ◽  
Asymmetric Supercapacitors ◽  
Nanosheet Arrays

High energy density is achieved on an electrode based on ultrathin Ni-MOF nanosheet arrays grown on PANI decorated NF.

scholarly journals Facile In Situ Synthesis of Co(OH)2–Ni3S2 Nanowires on Ni Foam for Use in High-Energy-Density Supercapacitors

Nanomaterials ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 34
Author(s):  
Xuan Liang Wang ◽  
En Mei Jin ◽  
Jiasheng Chen ◽  
Parthasarathi Bandyopadhyay ◽  
Bo Jin ◽  
...  
Keyword(s):  
Energy Density ◽  
Electrochemical Properties ◽  
Current Density ◽  
Hydrothermal Reaction ◽  
Active Material ◽  
High Energy ◽  
High Energy Density ◽  
Ni Foam ◽  
One Pot

Ni3S2 nanowires were synthesized in situ using a one-pot hydrothermal reaction on Ni foam (NF) for use in supercapacitors as a positive electrode, and various contents (0.3−0.6 mmol) of Co(OH)2 shells were coated onto the surfaces of the Ni3S2 nanowire cores to improve the electrochemical properties. The Ni3S2 nanowires were uniformly formed on the smooth NF surface, and the Co(OH)2 shell was formed on the Ni3S2 nanowire surface. By direct NF participation as a reactant without adding any other Ni source, Ni3S2 was formed more closely to the NF surface, and the Co(OH)2 shell suppressed the loss of active material during charging–discharging, yielding excellent electrochemical properties. The Co(OH)2–Ni3S2/Ni electrode produced using 0.5 mmol Co(OH)2 (Co0.5–Ni3S2/Ni) exhibited a high specific capacitance of 1837 F g−1 (16.07 F cm−2) at a current density of 5 mA cm−2, and maintained a capacitance of 583 F g−1 (16.07 F cm−2) at a much higher current density of 50 mA cm−2. An asymmetric supercapacitor (ASC) with Co(OH)2–Ni3S2 and active carbon displayed a high-power density of 1036 kW kg−1 at an energy density of 43 W h kg−1 with good cycling stability, indicating its suitability for use in energy storage applications. Thus, the newly developed core–shell structure, Co(OH)2–Ni3S2, was shown to be efficient at improving the electrochemical performance.

A hierarchical glucose-intercalated NiMn-G-LDH@NiCo2S4 core–shell structure as a binder-free electrode for flexible all-solid-state asymmetric supercapacitors

Nanoscale ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 1852-1863 ◽  
Author(s):  
Shixia Chen ◽  
Chengxi Lu ◽  
Lu Liu ◽  
Mai Xu ◽  
Jun Wang ◽  
...  
Keyword(s):  
Solid State ◽  
Energy Density ◽  
Shell Structure ◽  
High Energy ◽  
High Energy Density ◽  
Core Shell ◽  
Wearable Electronics ◽  
Asymmetric Supercapacitors ◽  
Binder Free ◽  
Core Shell Structure

Flexible, lightweight, and high-energy-density asymmetric supercapacitors (ASCs) are highly attractive for portable and wearable electronics.

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