High-performance 2.5 V supercapacitor with high energy density and long cycling stability based on graphene coated oxygen-vacancy birnessite

Tong, Hao; Gong, Daxiong; Liu, Jiang; Xiao, Jianfeng; Chen, Xudong; Wu, Yuan; Zhou, Yang; Shen, Laifa; Zhang, Xiaogang

doi:10.1016/j.jallcom.2021.163543

Cited by 6 publications

(2 citation statements)

References 46 publications

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“…Moreover, the solvated structure on a hydrated ion restrains charge impact on the ion; in particular, Al 3+ can overcome the limitation of strong electrostatic interaction between the structures of Al 3+ in the activated carbon intercalation, thus enhancing the insertion kinetics . Hence, the development of an Al 3+ -containing supercapacitor and overcoming strong electrostatic interactions between ions are of great significance. − …”

Section: Introductionmentioning

confidence: 99%

Cotton Fiber/PVA-Based Neutral Hydrogel with Al³⁺ as an Electrolyte Additive for High-Performance Supercapacitors

Zhao

Huang

Zheng

et al. 2023

ACS Appl. Energy Mater.

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Electrolyte additives have been widely studied in the improvement of stability of aqueous electrolytes. Here, we report a crosslinking cotton fiber-/ PVA-based membrane (CPM) with an excellent porosity of 73.82% and an ultrahigh liquid electrolyte uptake of 900 wt %, prepared by the solution casting method. Li 2 SO 4 as an electrolyte salt and various concentrations of Al 3+ as additives were used for fabricating the gel polymer electrolyte (GPE). On adding Al 3+ into the Li 2 SO 4 electrolyte, dissociative water and bound water in Li + solvation interact with Al 3+ ; this affects water molecule activity and reduces Li + solvation. While the presence of Al 3+ electrolyte exhibits better electrochemical stability under a high operating voltage of 1.6 V, the highest specific capacitance of a supercapacitor (SC) is 136 F g −1 at 1.0 A g −1 , and it has 91% initial capacitance retention after 20 000 charge−discharge cycles, which is higher than that of the Li 2 SO 4 electrolyte. This work provides a path for designing a high-output-voltage aqueous supercapacitor via electrolytes and the membrane strategy.

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Section: Introductionmentioning

confidence: 99%

Cotton Fiber/PVA-Based Neutral Hydrogel with Al³⁺ as an Electrolyte Additive for High-Performance Supercapacitors

Zhao

Huang

Zheng

et al. 2023

ACS Appl. Energy Mater.

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“…In recent years, the speed of human consumption of resources is much faster than the speed of resource generation. In the long term, human will fall into the dilemma of energy shortage, and the vision of developing new energy storage devices is constantly enhanced [1][2][3][4]. Batteries and supercapacitors as examples of modern energy storage technology convert chemical reactions into electric energy by using materials with abundant reserves, thus relieving the traditional situation of simply relying on oil and coal for energy supply [5].…”

Section: Introductionmentioning

confidence: 99%

WITHDRAWN: Prussian blue analogue derived nitrogen‒carbon mixed metal sulfides heterostructure for asymmetric supercapacitors

Chen

Zhou

et al. 2023

Preprint

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Prussian blue analogues (PBAs) have the advantages of stable electrochemical performance and long service life when used as energy storage materials due to their face‒centered cubic structure. Here, Ni‒Co Prussian blue analogue (PBA) nano units have been utilized as precursor to prepare corresponding metal sulfide derivatives, which inherited the structural properties of the precursor. This unique structural exposes more reaction sites and the generation of a small amount of nitrogen-doped carbon that enhances charge transfer. This cube structure has a buffer effect on the stress of the active substance during charging and discharging. The CoS2/Ni3S4‒N‒C provides a capacitance of 817 C g‒1 at 3 A g‒1 and there is still 556 C g‒1 at 20 A g‒1. Furthermore, CoS2/Ni3S4‒N‒C electrode yields outstanding cycle stability (98.2% capacitance retention at 10,000 cycles). An asymmetric supercapacitor (ASC) device consisting of CoS2/ Ni3S4‒N‒C and activated carbon electrodes have an energy density of 40 Wh kg‒1, and a retention rate of 103.7% for 10,000 cycles at 10 A g‒1, presenting excellent cycle stability. The electron properties of Co2NiO4 and CoS2/Ni3S4 − N−C are compared by density functional theory (DFT). CoS2/Ni3S4 − N−C detects more DOS near the Fermi level, leading to larger charge accumulation, indicating that the electron conductivity of the heterojunction is much higher than that of the oxide, and eventually faster reaction kinetics can be obtained.

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The Effects of Al2O3 Addition – Silicon as a Novel Hybrid Electrode Material for High-Performance Supercapbattery

Diantoro,

Nasikhudin,

Hidayah

et al. 2024

Springer Proceedings in Physics

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High-performance 2.5 V supercapacitor with high energy density and long cycling stability based on graphene coated oxygen-vacancy birnessite

Cited by 6 publications

References 46 publications

Cotton Fiber/PVA-Based Neutral Hydrogel with Al³⁺ as an Electrolyte Additive for High-Performance Supercapacitors

Cotton Fiber/PVA-Based Neutral Hydrogel with Al³⁺ as an Electrolyte Additive for High-Performance Supercapacitors

WITHDRAWN: Prussian blue analogue derived nitrogen‒carbon mixed metal sulfides heterostructure for asymmetric supercapacitors

The Effects of Al2O3 Addition – Silicon as a Novel Hybrid Electrode Material for High-Performance Supercapbattery

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High-performance 2.5 V supercapacitor with high energy density and long cycling stability based on graphene coated oxygen-vacancy birnessite

Cited by 6 publications

References 46 publications

Cotton Fiber/PVA-Based Neutral Hydrogel with Al3+ as an Electrolyte Additive for High-Performance Supercapacitors

Cotton Fiber/PVA-Based Neutral Hydrogel with Al3+ as an Electrolyte Additive for High-Performance Supercapacitors

WITHDRAWN: Prussian blue analogue derived nitrogen‒carbon mixed metal sulfides heterostructure for asymmetric supercapacitors

The Effects of Al2O3 Addition – Silicon as a Novel Hybrid Electrode Material for High-Performance Supercapbattery

Contact Info

Product

Resources

About

Cotton Fiber/PVA-Based Neutral Hydrogel with Al³⁺ as an Electrolyte Additive for High-Performance Supercapacitors

Cotton Fiber/PVA-Based Neutral Hydrogel with Al³⁺ as an Electrolyte Additive for High-Performance Supercapacitors