Seaurchin-like hierarchical NiCo2O4@NiMoO4 core–shell nanomaterials for high performance supercapacitors

2014 ◽  
Vol 16 (42) ◽  
pp. 23451-23460 ◽  
Author(s):  
Qiang Zhang ◽  
Yanghua Deng ◽  
Zhonghua Hu ◽  
Yafei Liu ◽  
Mingming Yao ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Shell Structure ◽  
High Performance ◽  
Core Shell ◽  
Electrochemical Performances ◽  
Core Shell Structure

A seaurchin-like NiCo2O4@NiMoO4 core–shell structure, which exhibits excellent electrochemical performances was first synthesized via a facile two-step hydrothermal method.

Highly conductive Ni(OH)2 nano-sheets wrapped CuCo2S4 nano-tube electrode with a core-shell structure toward high performance supercapacitor

2021 ◽  
Author(s):  
Yinan Yuan ◽  
Henan Jia ◽  
Zhaoyuan Liu ◽  
Lidong Wang ◽  
J. Sheng ◽  
...  
Keyword(s):  
Electrode Material ◽  
Shell Structure ◽  
High Performance ◽  
Electrode Materials ◽  
Core Shell ◽  
Electrochemical Performances ◽  
Tube Electrode ◽  
Optimum Selection ◽  
Core Shell Structure ◽  
Selection Of

The design of microstructures and the optimum selection of electrode materials have substantial effects on the electrochemical performances for supercapacitors. A core-shell structured CuCo2S4@Ni(OH)2 electrode material was designed, in which...

scholarly journals Hydrothermal Synthesis of Co3O4/ZnCo2O4 Core-Shell Nanostructures for High-Performance Supercapacitors

2021 ◽  
Author(s):  
En-Syuan Lin ◽  
Feng-Sheng Chao ◽  
Chen-Jui Liang ◽  
Chi-Jung Chang ◽  
Alex Fang ◽  
...  
Keyword(s):  
Shell Structure ◽  
High Performance ◽  
Nickel Foam ◽  
Core Shell ◽  
Electrochemical Performances ◽  
Active Materials ◽  
Structural Support ◽  
Shell Nanostructures ◽  
Core Shell Structure ◽  
Co3o4 Nanorods

Abstract Supercapacitive properties of Co/ZnCo oxide composite with a core-shell nanostructure (Co3O4/ZnCo2O4) prepared directly onto a nickel foam substrate by a two-step hydrothermal method were investigated. The synthesized core-shell structure consisted of some ~40-100 nm in thick flaky ZnCo2O4 deposits coated onto the surface of Co3O4 nanorods measuring ~150 nm in diameter. The specific capacitance value of the Co3O4/ZnCo2O4 core-shell nanostructure synthesized by hydrothermal at 130°C for a ZnCo2O4 deposition time of 2 h can attain 1804 F/g at a scan rate of 5 mV/s. Furthermore, the core-shell structured electrode still exhibited a relatively good capacitance retention of more than 93% after 3000 CV cycles due to the superior structural support of Co3O4 scaffolds. The Co3O4/ZnCo2O4 core-shell structure exhibits excellent electrochemical performances and, as such, is one of the more promising active materials in pseudocapacitor applications.

Characterization of Fe3O4@CS@NMDP magnetic nanoparticles with core–shell structure prepared by chemical cross-linking method

2017 ◽  
Vol 10 (05) ◽  
pp. 1750056 ◽  
Author(s):  
Huiping Shao ◽  
Jiangcong Qi ◽  
Tao Lin ◽  
Yuling Zhou ◽  
Fucheng Yu
Keyword(s):  
Magnetic Nanoparticles ◽  
Shell Structure ◽  
High Performance ◽  
Cross Linking ◽  
Composite Particles ◽  
Core Shell ◽  
The Core ◽  
Targeting Delivery ◽  
Core Shell Structure ◽  
Chemical Cross Linking

The core–shell structure composite magnetic nanoparticles (NPs), Fe3O4@chitosan@nimodipine (Fe3O4@CS@NMDP), were successfully synthesized by a chemical cross-linking method in this paper. NMDP is widely used for cardiovascular and cerebrovascular disease prevention and treatment, while CS is of biocompatibility. The composite particles were characterized by an X-ray diffractometer (XRD), a Fourier transform infrared spectroscopy (FT-IR), a transmission electron microscopy (TEM), a vibrating sample magnetometers (VSM) and a high performance liquid chromatography (HPLC). The results show that the size of the core–shell structure composite particles is ranging from 12[Formula: see text]nm to 20[Formula: see text]nm and the coating thickness of NMDP is about 2[Formula: see text]nm. The saturation magnetization of core–shell composite NPs is 46.7[Formula: see text]emu/g, which indicates a good potential application for treating cancer by magnetic target delivery. The release percentage of the NMDP can reach 57.6% in a short time of 20[Formula: see text]min in the PBS, and to 100% in a time of 60[Formula: see text]min, which indicates the availability of Fe3O4@CS@NMDP composite NPs for targeting delivery treatment.

Manipulation of 2D carbon nanoplates with a core–shell structure for high-performance potassium-ion batteries

2019 ◽  
Vol 7 (34) ◽  
pp. 19929-19938 ◽  
Author(s):  
Dongjun Li ◽  
Xiaolong Cheng ◽  
Rui Xu ◽  
Ying Wu ◽  
Xuefeng Zhou ◽  
...  
Keyword(s):  
Amorphous Carbon ◽  
Shell Structure ◽  
High Performance ◽  
Potassium Ion ◽  
Graphitic Carbon ◽  
Core Shell ◽  
Core Shell Structure

Quasi-2D core–shell amorphous carbon/graphitic carbon nanoplates (AC@GC) are designed, and they exhibit synergistic properties that enable the construction of superior K-ion batteries.

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