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

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.

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

Dalton Transactions ◽

10.1039/d1dt01329g ◽

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.

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

RSC Advances ◽

10.1039/c5ra28103b ◽

2016 ◽

Vol 6 (30) ◽

pp. 24952-24958 ◽

Cited By ~ 8

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.

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

Dalton Transactions ◽

10.1039/c7dt00932a ◽

2017 ◽

Vol 46 (23) ◽

pp. 7388-7391 ◽

Cited By ~ 58

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).

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Reduced graphene oxide/Ni1−xCoxAl-layered double hydroxide composites: preparation and high supercapacitor performance

Dalton Transactions ◽

10.1039/c4dt00686k ◽

2014 ◽

Vol 43 (30) ◽

pp. 11667-11675 ◽

Cited By ~ 96

Author(s):

Jie Xu ◽

Shili Gai ◽

Fei He ◽

Na Niu ◽

Peng Gao ◽

...

Keyword(s):

Graphene Oxide ◽

Specific Capacitance ◽

Reduced Graphene Oxide ◽

Layered Double Hydroxide ◽

Hybrid Composite ◽

Cycling Stability ◽

Reduced Graphene ◽

Supercapacitor Performance ◽

Excellent Cycling Stability ◽

Double Hydroxide

A novel sandwich-structured rGO/Ni0.83Co0.17Al-LDH hybrid composite exhibits high supercapacitor performance, with a specific capacitance of 1902 F g−1 at 1 A g−1, and excellent cycling stability.

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

Nanoscale ◽

10.1039/c5nr01320h ◽

2015 ◽

Vol 7 (16) ◽

pp. 7168-7173 ◽

Cited By ~ 78

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.

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Enhanced properties of poly(lactic acid) by concurrent addition of organo-modified Mg-Al layered double hydroxide (LDH) and triethyl citrate

Journal of Thermoplastic Composite Materials ◽

10.1177/0892705719868272 ◽

2019 ◽

pp. 089270571986827 ◽

Cited By ~ 1

Author(s):

Mehrnoush Monshizadeh ◽

Sajad Seifi ◽

Iman Hejazi ◽

Javad Seyfi ◽

Hossein Ali Khonakdar

Keyword(s):

Lactic Acid ◽

Layered Double Hydroxide ◽

Food Packaging ◽

Synergistic Effects ◽

Poly Lactic Acid ◽

Solution Casting ◽

Scanning Calorimetry ◽

Concurrent Use ◽

Triethyl Citrate ◽

Double Hydroxide

Synergistic effects of organo-modified Mg-Al layered double hydroxide (LDH) and triethyl citrate (TEC) on the properties of poly(lactic acid) (PLA) were demonstrated. PLA/LDH nanocomposites in the absence and presence of TEC were fabricated via solution casting technique. Morphological analysis revealed that as the LDH concentration increases, the number of aggregations is also increased; however, introduction of TEC considerably enhanced the dispersion quality of LDHs. Differential scanning calorimetry results showed that the addition of LDH and TEC had no significant influence on the crystallinity of nanocomposites obtained from solution casting. In contrast, once the samples were cooled from melt, the concurrent use of LDH and TEC led to a dramatic enhancement in the crystallinity of PLA ( X c = 55.5%). Moreover, the LDH nanoparticles counterbalanced the adverse effects of plasticization by TEC leading to enhanced toughness of the final nanocomposites. LDH had also a positive influence on thermal stability of PLA, indicating the heat-insulating role of LDH particles. In conclusion, the concurrent use of LDH and TEC could extend the applicability of PLA especially in food packaging applications.

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Tunable supercapacitor performance of potentiodynamically deposited urea-doped cobalt hydroxide

RSC Advances ◽

10.1039/c4ra04281f ◽

2014 ◽

Vol 4 (59) ◽

pp. 31219-31225 ◽

Cited By ~ 12

Author(s):

Palanisamy Vinothbabu ◽

Perumal Elumalai

Keyword(s):

Specific Capacitance ◽

High Specific Capacitance ◽

Cobalt Hydroxide ◽

Supercapacitor Performance ◽

Basal Length

The influence of the basal length of Co(OH)2 on supercapacitor performance was examined in detail by adding simple urea molecules during deposition. It was observed that the specific capacitance of Co(OH)2 could be tuned from 700 to 1200 F g−1. This high specific capacitance was attributed to the better access of electrolyte.

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A facile phase transformation method for the preparation of 3D flower-like β-Ni(OH)2/GO/CNTs composite with excellent supercapacitor performance

Journal of Materials Chemistry A ◽

10.1039/c4ta02221a ◽

2014 ◽

Vol 2 (32) ◽

pp. 12692-12696 ◽

Cited By ~ 59

Author(s):

Xiaowei Ma ◽

Jiwei Liu ◽

Chongyun Liang ◽

Xiwen Gong ◽

Renchao Che

Keyword(s):

Phase Transformation ◽

Specific Capacitance ◽

High Specific Capacitance ◽

Transformation Method ◽

Cycling Performance ◽

Supercapacitor Performance

3D flower-like β-Ni(OH)2/GO/CNTs composite prepared via facile phase transformation method exhibited high specific capacitance (96% of theoretical pseudocapacitance at 2 A g−1) and good cycling performance.

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High Specific Capacitance of the Electrodeposited MnO2 on Porous Foam Nickel Soaked in Alcohol and its Dependence on Precursor Concentration

Materials ◽

10.3390/ma13010181 ◽

2020 ◽

Vol 13 (1) ◽

pp. 181 ◽

Cited By ~ 4

Author(s):

Ming Zhang ◽

Xiaoli Dai ◽

Cuixian Zhang ◽

Yuanwu Fuan ◽

Dingyu Yang ◽

...

Keyword(s):

Electron Microscope ◽

Specific Capacitance ◽

Photoelectron Spectroscopy ◽

Electrochemical Impedance ◽

Retention Rate ◽

Nickel Foam ◽

Three Dimensional ◽

High Specific Capacitance ◽

Manganese Acetate ◽

Mixed Solution

In this work, we used the mixed solution of manganese acetate and sodium sulfate to deposit manganese dioxide on the three-dimensional porous nickel foam that was previously soaked in alcohol, and then the effects of solution concentrations on their capacitance properties were investigated. The surface morphology, microstructure, elemental valence and other information of the material were observed by scanning electron microscope (SEM), Transmission Electron Microscope (TEM), X-ray photoelectron spectroscopy (XPS), etc. The electrochemical properties of the material were tested by Galvanostatic charge-discharge (GCD), Cyclic Voltammetry (CV), Chronoamperometry (CA), Electrochemical impedance spectroscopy (EIS), etc. The MnO2 electrode prepared at lower concentrations can respectively reach a specific capacitance of 529.5 F g−1 and 237.3 F g−1 at the current density of 1 A g−1 and 10 A g−1, and after 2000 cycles, the capacity retention rate was still 79.8% of the initial capacitance, and the energy density can even reach 59.4 Wh Kg−1, while at the same time, it also has a lower electrochemical impedance (Rs = 1.18 Ω, Rct = 0.84 Ω).

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