Ni3+doped monolayer layered double hydroxide nanosheets as efficient electrodes for supercapacitors

Nanoscale ◽  
2015 ◽  
Vol 7 (16) ◽  
pp. 7168-7173 ◽  
Author(s):  
Yufei Zhao ◽  
Qing Wang ◽  
Tong Bian ◽  
Huijun Yu ◽  
Hua Fan ◽  
...  
Keyword(s):  
Specific Capacitance ◽  
Layered Double Hydroxide ◽  
High Specific Capacitance ◽  
Bottom Up ◽  
Monolayer Nanosheets ◽  
20 Nm ◽  
Double Hydroxide ◽  
Electrodes For Supercapacitors ◽  
Cycling Life

Ni3+doped NiTi-LDH monolayer nanosheets with lateral dimensions ∼20 nm and a ultrathin thickness of ∼0.9 nm prepared through a facile bottom-up approach exhibit excellent supercapacitive performances, including extremely high specific capacitance (2310 F g−1at 1.5 A g−1) and long-term cycling life compared with bulk LDH.

Controllable architecture of the NiCoZnS@NiCoFe layered double hydroxide coral-like structure for high-performance supercapacitors

2021 ◽  
Author(s):  
Shi-Bing Lv ◽  
Hong-Yan Zeng ◽  
Kai-Min Zou ◽  
Sheng Xu ◽  
Yi-Wen Long ◽  
...  
Keyword(s):  
Specific Capacitance ◽  
Layered Double Hydroxide ◽  
Shell Structure ◽  
High Performance ◽  
High Specific Capacitance ◽  
Core Shell ◽  
Core Shell Structure ◽  
Double Hydroxide

NiCoZnS@NiCoFe-LDH with a unique coral-like core–shell structure and a high specific capacitance of 1524.0 C g−1 was successfully prepared.

Bioinspired polydopamine-layered double hydroxide nanocomposites: controlled synthesis and multifunctional performance

RSC Advances ◽  
2016 ◽  
Vol 6 (30) ◽  
pp. 24952-24958 ◽  
Author(s):  
Hye Jin Nam ◽  
Eun Bi Park ◽  
Duk-Young Jung
Keyword(s):  
Specific Capacitance ◽  
Layered Double Hydroxide ◽  
High Specific Capacitance ◽  
Hybrid Nanostructures ◽  
Controlled Synthesis ◽  
Strong Adhesion ◽  
Double Hydroxide

Interlayer polymerization of dopamine into a LDH layer enabled the preparation of multifunctional hybrid nanostructures with strong adhesion and high specific capacitance.

A hierarchical NiO/NiMn-layered double hydroxide nanosheet array on Ni foam for high performance supercapacitors

2017 ◽  
Vol 46 (23) ◽  
pp. 7388-7391 ◽  
Author(s):  
Peng-Fei Liu ◽  
Jiao-Jiao Zhou ◽  
Guo-Chang Li ◽  
Meng-Ke Wu ◽  
Kai Tao ◽  
...  
Keyword(s):  
Specific Capacitance ◽  
Layered Double Hydroxide ◽  
High Performance ◽  
High Specific Capacitance ◽  
Cycling Stability ◽  
Ni Foam ◽  
Nanosheet Array ◽  
Double Hydroxide ◽  
Good Cycling Stability

A hierarchical NiO/NiMn-LDH nanosheet array on Ni foam was preparedviaa facile two-step approach and exhibited a high specific capacitance (937 F g−1at 0.5 A g−1) and good cycling stability (91% retention after 1000 cycles at 5 A g−1).

scholarly journals Enhanced Supercapacitor Performance Based on CoAl Layered Double Hydroxide-Polyaniline Hybrid Electrodes Manufactured Using Hydrothermal-Electrodeposition Technology

Molecules ◽  
2019 ◽  
Vol 24 (5) ◽  
pp. 976 ◽  
Author(s):  
Guoshen Yang ◽  
Takahiro Takei ◽  
Sayaka Yanagida ◽  
Nobuhiro Kumada
Keyword(s):  
Specific Capacitance ◽  
Layered Double Hydroxide ◽  
Electrochemical Impedance ◽  
Degradation Products ◽  
Synergistic Effects ◽  
High Specific Capacitance ◽  
Cyclic Stability ◽  
Supercapacitor Performance ◽  
New Perspective ◽  
Double Hydroxide

Electrodes with nanosheet architectures can offer the possibility to achieve enhanced energy storage performance. Herein, we have designed and synthesized novel nanosheet structures of CoAl layered double hydroxide (LDH)-polyaniline (PANI) nanocomposite thin films by a hydrothermal-electrodeposition method. The molecular structure, crystal structure, morphology and chemical composition of the composites were characterized by FT-IR, XRD (SXRD), FESEM, and XPS, whereas their electrochemical properties were evaluated by cyclic voltammetry, electrochemical impedance spectroscopy and galvanostatic charge-discharge tests. Compared with the unmodified CoAl LDH, the CoAl LDH-PANI exhibits significantly improved the specific capacitance and cyclic stability. The composite exhibits a high specific capacitance of 528 F/g at a current density of 10 A/g and excellent cyclic stability with an increase of the specific capacitance of 42.7% after 6000 cycle tests. We revealed the degradation behavior of PANI in 1 M KOH/KCl electrolyte, and the active degradation products also further increased the total specific capacitance of the composite. The enhanced electrochemical performance of the nanocomposite can be attributed to its well-designed nanostructure and the synergistic effects of each component. By analyzing the band structure and density of states of CoAl LDH and PANI, we proposed the possible mechanism of synergistic effect in a new perspective.

Synthesis of three-dimensional mesoporous Cu–Al layered double hydroxide/g-C3N4 nanocomposites on Ni-foam for enhanced supercapacitors with excellent long-term cycling stability

2018 ◽  
Vol 47 (13) ◽  
pp. 4455-4466 ◽  
Author(s):  
Surya Prasad Adhikari ◽  
Ganesh Prasad Awasthi ◽  
Kyung-Suk Kim ◽  
Chan Hee Park ◽  
Cheol Sang Kim
Keyword(s):  
Layered Double Hydroxide ◽  
Three Dimensional ◽  
Cycling Stability ◽  
Ni Foam ◽  
Step Process ◽  
Double Hydroxide

In this study, a novel composite of Cu–Al layered double hydroxide (LDH) nanosheets and g-C3N4-covered Ni-foam was fabricated via a simple and facile two-step process.

Assembly of Ni-Al layered double hydroxide and graphene electrodes for supercapacitors

2014 ◽  
Vol 134 ◽  
pp. 127-135 ◽  
Author(s):  
Yasodinee Wimalasiri ◽  
Rong Fan ◽  
X.S. Zhao ◽  
Linda Zou
Keyword(s):  
Layered Double Hydroxide ◽  
Double Hydroxide ◽  
Electrodes For Supercapacitors
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