Hybrid graphene nanoplatelet/manganese oxide electrodes for solid-state supercapacitors and application to carbon fiber composite multifunctional materials

Masouras, Athanasios; Giannopoulos, Dimosthenis P.; Hasa, Bjorn; Katsaounis, Alexandros; Kostopoulos, V.

doi:10.1016/j.est.2019.04.025

Cited by 22 publications

(12 citation statements)

References 56 publications

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“…Because more hydrogen bonds were formed between PVA and glycerol with the increase of glycerol content, resulting in a higher network cross-linked density. The DSC measurement was used to confirm the actual freezing point of the electrolyte. , It can be seen that the organohydrogel electrolyte could remain stable in a wide temperature range above −65 °C (Figure S5a in the Supporting Information), and there was no peak in a low-temperature environment. , The conductivity diagrams of organohydrogels with different glycerol/water ratios (Figure S5b in the Supporting Information) show that the highest conductivity was achieved with the 1:3 ratio of glycerol to water. To balance the mechanical property of the organohydrogel, the organohydrogel with a 1:2 volume ratio of glycerol to water is chosen as the electrolyte of the supercapacitor.…”

Section: Resultsmentioning

confidence: 99%

Low-Temperature-Resistant Flexible Solid Supercapacitors Based on Organohydrogel Electrolytes and Microvoid-Incorporated Reduced Graphene Oxide Electrodes

Hou

Zhang

Wang

et al. 2021

ACS Appl. Mater. Interfaces

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Maintaining enough flexibility and satisfied electrochemical performance simultaneously at subzero temperatures is still challengeable for flexible solid supercapacitors. In the present work, by adopting an organohydrogel electrolyte and reduced graphene oxide (rGO) films with microvoids serving as electrodes, a supercapacitor, which could be steadily operated down to −60 °C, has been obtained and has shown excellent low-temperature tolerance. The organohydrogel electrolyte consists of LiCl in glycerol/water solution containing polyvinyl alcohol, exhibiting excellent flexibility at −60 °C. Due to the introduction of micropores between rGO sheets, the porous membrane can be folded even in liquid nitrogen. Combining the rGO electrodes with the organohydrogel electrolyte, the maximum voltage of the present supercapacitor could be extended to 2.0 V, and a capacitance of 7.73 F·g–1 at −60 °C could be achieved. After 5000 charge/discharge cycles at −20 °C, the capacitance retention rate is 87.5%. The excellent flexibility and low-temperature resistance of the current supercapacitor pave a novel way for developing compression-resistant electronic samples compatible with a low-temperature environment.

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Section: Resultsmentioning

confidence: 99%

Low-Temperature-Resistant Flexible Solid Supercapacitors Based on Organohydrogel Electrolytes and Microvoid-Incorporated Reduced Graphene Oxide Electrodes

Hou

Zhang

Wang

et al. 2021

ACS Appl. Mater. Interfaces

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“…Carbon fiber mixed with graphene nanoplatelet/manganese oxide electrodes that can be applied as supercapacitor in CFRP multifactional materials was studied and reported by Masouras et al [14]. Graphene nanoplates were modified using MnO2 with the sonication method in an organic solvent.…”

Section: Carbon Fiber Compositesmentioning

confidence: 99%

The Progressive Development Of Multifunctional Composite Materials In Different Applications

Muflikhun

2020

Angkasa

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Composite materials gain huge interest from researchers due to its advantages and flexibility. Strength and properties that can be adjusted based on the needs and applications is a specific advantage of composite materials. Since these advantages can be applied in many fields, composite materials often clustered in multifunctional materials. This study aims to lists and classified the progressive development of multifunctional composite materials that found and already proven can be applied in many applications. This study also gives data that can be driven to readers from different backgrounds and used it for further purposes. The results are shown that the progressive development of multifunctional composite materials not only one step forward in the technical achievements but also the energy and environment-related to human ecosystems.

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“…One strategy is to transfer the load to embedded commercial batteries 6 , 7 as well as conventional battery electrodes and current collectors 8 , 9 . In developing multifunctional materials, structurally robust carbon and glass fiber manufacturing methods have been adapted to produce structural capacitor electrodes, 10 – 12 electrolytes, 13 – 15 , and full devices. 16 – 21 Such devices have achieved high performance as compared with other capacitor systems, but they typically exhibit energy densities under 10 Wh/kg.…”

Section: Introductionmentioning

confidence: 99%

Structural ceramic batteries using an earth-abundant inorganic waterglass binder

Ransil

Belcher

2021

Nat Commun

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Sodium trisilicate waterglass is an earth-abundant inorganic adhesive which binds to diverse materials and exhibits extreme chemical and temperature stability. Here we demonstrate the use of this material as an electrode binder in a lay-up based manufacturing system to produce structural batteries. While conventional binders for structural batteries exhibit a trade-off between mechanical and electrochemical performance, the waterglass binder is rigid, adhesive, and facilitates ion transport. The bulk binder maintains a Young’s modulus of >50 GPa in the presence of electrolyte solvent while waterglass-based electrodes have high rate capability and stable discharge capacity over hundreds of electrochemical cycles. The temperature stability of the binder enables heat treatment of the full cell stack following lay-up shaping in order to produce a rigid, load-bearing part. The resulting structural batteries exhibit impressive multifunctional performance with a package free cell stack-level energy density of 93.9 Wh/kg greatly surpassing previously published structural battery materials, and a tensile modulus of 1.4 GPa.

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Hybrid graphene nanoplatelet/manganese oxide electrodes for solid-state supercapacitors and application to carbon fiber composite multifunctional materials

Cited by 22 publications

References 56 publications

Low-Temperature-Resistant Flexible Solid Supercapacitors Based on Organohydrogel Electrolytes and Microvoid-Incorporated Reduced Graphene Oxide Electrodes

Low-Temperature-Resistant Flexible Solid Supercapacitors Based on Organohydrogel Electrolytes and Microvoid-Incorporated Reduced Graphene Oxide Electrodes

The Progressive Development Of Multifunctional Composite Materials In Different Applications

Structural ceramic batteries using an earth-abundant inorganic waterglass binder

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