Binder and conductive agent‐free electrode for the excellent aqueous asymmetrical supercapacitor

Zarshad, Nighat; Wu, Jianghua; Rahman, Anis Ur; Ali, Asad; Qiu, Ce; Aisha, Ruziguli; Gao, Rui; Xie, Yu; Ni, Henmei

doi:10.1016/j.solidstatesciences.2020.106530

Cited by 7 publications

(6 citation statements)

References 39 publications

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“…Finally, the addition of Al changes the morphology of NiCo 2 Al x -LDHs. The interlocking network structure of nanosheets can not only possess a larger specific surface area but also obtain more electrochemically active sites, thereby exhibiting excellent electrochemical performance …”

Section: Results and Discussionmentioning

confidence: 99%

“…The interlocking network structure of nanosheets can not only possess a larger specific surface area but also obtain more electrochemically active sites, thereby exhibiting excellent electrochemical performance. 47 Electrochemical Performances of a NiCo 2 Al 0.5 -LDHs// AC ASC. To assemble an asymmetric supercapacitor and measure the electrochemical properties of the two-electrode system, the performances of the AC electrode were first tested.…”

Section: Acs Applied Energy Materialsmentioning

confidence: 99%

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Facile Preparation and Performances of Ni, Co, and Al Layered Double Hydroxides for Application in High-Performance Asymmetric Supercapacitors

Chen

Ouyang

Yang

et al. 2021

ACS Appl. Energy Mater.

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Layered double hydroxides (LDHs) are widely studied as electrode materials of supercapacitors (SCs) owing to their specific composition and morphology and plentiful electrochemically active sites. Especially, nickel cobalt hydroxides can achieve an outstanding electrochemical performance as electrode materials of SCs because of the synergy effect between Ni and Co. Herein, ternary LDHs including Ni, Co, and Al (NiCo2Al x -LDHs) with different stoichiometric ratios are synthesized by a facile method to further research the influences of Al on the morphology and electrochemical performances of LDHs. Results show that the NiCo2Al0.5-LDHs electrode delivers a high specific capacitance (1260 F g–1 at 0.5 A g–1) and an excellent capacitance retention (81.5% of initial capacitance). Besides, an asymmetric supercapacitor (ASC) assembled with a NiCo2Al0.5-LDHs cathode and an activated carbon (AC) anode (NiCo2Al0.5-LDHs//AC ASC) exhibits a high energy density of 39 Wh kg–1 with remarkable cycling stability (91.7% of initial capacitance retention after 6000 cycles at 5 A g–1).

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Section: Results and Discussionmentioning

confidence: 99%

Section: Acs Applied Energy Materialsmentioning

confidence: 99%

Facile Preparation and Performances of Ni, Co, and Al Layered Double Hydroxides for Application in High-Performance Asymmetric Supercapacitors

Chen

Ouyang

Yang

et al. 2021

ACS Appl. Energy Mater.

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show abstract

“…In this context, supercapacitors (SCs) have garnered widespread attention as highly promising energy storage device. SCs offer a fast charge/discharge capability, extended service life, and great power density [4][5][6]. However, conventional supercapacitors still face limitations in terms of energy density.…”

Section: Introductionmentioning

confidence: 99%

Ammonium Ion-Pre-Intercalated MnO2 on Carbon Cloth for High-Energy Density Asymmetric Supercapacitors

Zheng,

Sun,

Zhao

et al. 2024

Materials

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With the continuous development of green energy, society is increasingly demanding advanced energy storage devices. Manganese-based asymmetric supercapacitors (ASCs) can deliver high energy density while possessing high power density. However, the structural instability hampers the wider application of manganese dioxide in ASCs. A novel MnO2-based electrode material was designed in this study. We synthesized a MnO2/carbon cloth electrode, CC@NMO, with NH4+ ion pre-intercalation through a one-step hydrothermal method. The pre-intercalation of NH4+ stabilizes the MnO2 interlayer structure, expanding the electrode stable working potential window to 0–1.1 V and achieving a remarkable mass specific capacitance of 181.4 F g−1. Furthermore, the ASC device fabricated using the CC@NMO electrode and activated carbon electrode exhibits excellent electrochemical properties. The CC@NMO//AC achieves a high energy density of 63.49 Wh kg−1 and a power density of 949.8 W kg−1. Even after cycling 10,000 times at 10 A g−1, the device retains 81.2% of its capacitance. This work sheds new light on manganese dioxide-based asymmetric supercapacitors and represents a significant contribution for future research on them.

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“…This can be accomplished by either enhancing the specific capacitance or cell voltage. The construction of asymmetric super capacitor is a viable route for achieving high cell voltage, where the negative electrode is present at lower potential while the positive electrode is present at higher potential and are operating in different potential window 2 . This results in improved cell voltage and energy density of the material.…”

Section: Introductionmentioning

confidence: 99%

Sodium Pre-Intercalation Based Na3-Δ-Mno2@Cc for High Performance Aqueous Asymmetric Super Capacitor: Joint Experimental and Dft Study

Ali¹,

Shah³

et al. 2022

SSRN Journal

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Binder and conductive agent‐free electrode for the excellent aqueous asymmetrical supercapacitor

Cited by 7 publications

References 39 publications

Facile Preparation and Performances of Ni, Co, and Al Layered Double Hydroxides for Application in High-Performance Asymmetric Supercapacitors

Facile Preparation and Performances of Ni, Co, and Al Layered Double Hydroxides for Application in High-Performance Asymmetric Supercapacitors

Ammonium Ion-Pre-Intercalated MnO2 on Carbon Cloth for High-Energy Density Asymmetric Supercapacitors

Sodium Pre-Intercalation Based Na3-Δ-Mno2@Cc for High Performance Aqueous Asymmetric Super Capacitor: Joint Experimental and Dft Study

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