Recent advances in graphene-based micro-supercapacitors: Processes and applications

Naveen, T. B.; Durgalakshmi, D.; Kunhiraman, Aruna K.; Balakumar, S.; Rakkesh, R. Ajay

doi:10.1557/s43578-021-00366-4

Cited by 12 publications

(5 citation statements)

References 95 publications

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“…Micro-scale energy storage devices have become notably essential in the development of portable and wearable electronic devices. [1][2][3][4][5] Among the various micro-scale energy storage devices, micro-supercapacitors and micro-batteries have gained significant attention owing to their unique properties and potential applications. While micro-batteries have been the traditional choice for energy storage in microelectronics, microsupercapacitors have emerged as a promising alternative due to their higher power density, faster charge and discharge rates, and longer cycle life.…”

Section: Introductionmentioning

confidence: 99%

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Hydrothermal Synthesis of a Graphene‐based Composite Enabling the Fabrication of a Current Collector‐free Microsupercapacitor with Improved Energy Storage Performance

Bouzina,

Meng,

Pillier

et al. 2023

Batteries & Supercaps

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Herein, the development and the characterization of an all‐solid‐state symmetrical and current collector‐free microsupercapacitor based on a new reduced graphene oxide‐polydopamine (rGO‐PDA) composite are reported. The rGO‐PDA composite is synthesized by a facile, eco‐friendly and scalable hydrothermal approach in the presence of dopamine which can not only contribute to the oxygen functional groups removal from graphene oxide but also polymerize onto the rGO sheets reducing their restacking and improving the wettability of the electrode. The optimized rGO‐PDA composite material exhibits excellent capacitance and cycling stability as well as an improved rate capability compared to the pristine rGO in Na2SO4 solution. This performance enhancement can be linked to the higher transfer kinetic and lower transfer resistance values of the ions involved in the charge storage process of rGO‐PDA, as determined by ac‐electrogravimetry. Furthermore, an all‐solid‐state microsupercapacitor was prepared employing the optimized rGO‐PDA composite as electrode material. Interdigitated electrodes were obtained thanks to a CO2 laser and a Na2SO4/PVA hydrogel was employed, no current collector was used. This device achieves a noteworthy energy density of 6.2 mWh ⋅ cm−3 at a power density of 0.22 W ⋅ cm−3. Moreover, it exhibits exceptional cycling stability, retaining 104 % of its initial capacity even after undergoing 10,000 cycles at 2 V ⋅ s−1.

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Section: Introductionmentioning

confidence: 99%

“…Micro‐scale energy storage devices have become notably essential in the development of portable and wearable electronic devices [1–5] . Among the various micro‐scale energy storage devices, micro‐supercapacitors and micro‐batteries have gained significant attention owing to their unique properties and potential applications.…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal Synthesis of a Graphene‐based Composite Enabling the Fabrication of a Current Collector‐free Microsupercapacitor with Improved Energy Storage Performance

Bouzina,

Meng,

Pillier

et al. 2023

Batteries & Supercaps

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“…In simple terms when several graphene layers are stacked one above the other it is called graphite, Figure 2. [13][14][15] It has peculiar physicochemical properties like high surface area, rich surface chemistry, functionalization, excellent electrical conductivity, production ease, ultrahigh flexibility, electron transport capabilities and it also has good biocompatibility. [16][17][18] Due to its unique properties, it has a lot of applications in various fields like solar cells, photonic devices, supercapacitors and sensors, etc.,.…”

Section: Introductionmentioning

confidence: 99%

“…Graphene is a transparent 2D layer of graphite whose sp 2 hybridised carbon atom arrangement gives it a honeycomb shape. In simple terms when several graphene layers are stacked one above the other it is called graphite, Figure 2 [13–15] . It has peculiar physicochemical properties like high surface area, rich surface chemistry, functionalization, excellent electrical conductivity, production ease, ultrahigh flexibility, electron transport capabilities and it also has good biocompatibility [16–18] .…”

Section: Introductionmentioning

confidence: 99%

Futuristic Advancements in Biomass‐Derived Graphene Nanoassemblies: Versatile Biosensors for Point‐of‐Care Devices

et al. 2022

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Graphene and its derivatives, graphene oxide (GO), and reduced graphene oxide (rGO) have gained a lot of interest in the field of biosensing applications due to their unique physicochemical properties. In recent days graphene derived from biomass waste has been undergoing a lot of development because it is stable, and has a structure with rich in carbon content, renewable and economically viable. In a way, it helps us in waste management and resource recovery. There are different ways to synthesize graphene and its derivatives through pyrolysis, chemical vapour deposition (CVD), and carbonization etc. In different types of sensors like electrochemical sensors, fluorescent sensors, surface plasmon resonance (SPR) sensors, and surface‐enhanced Raman scattering (SERS) sensors for detecting bacterial and viral pathogens, which can be designed from biomass derived graphene‐based nanostructures. These types of sensors can be used in Point of care (POC) and wearable devices, which are now witnessing a great deal of development. It helps us to carry on and analyze therapeutic and diagnoses for a disease from the comfort of our home which will be achieved soon.

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“…This shift is attributed to increased internal diffusion resistance within the redox-active material, as previously reported in the literature. 23,24 The b-value in the equation i p = an b , calculated from the plot between log(i p ) and log(n) (as shown in Fig. S7a and b, ESI †), provides insights into the current contribution in the MOFs.…”

mentioning

confidence: 99%

A high valence binary metal–organic framework as an electrode material for aqueous asymmetric supercapacitors

Naveen,

Durgalakshmi,

Balakumar

et al. 2024

Chem. Commun.

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Recent advances in graphene-based micro-supercapacitors: Processes and applications

Cited by 12 publications

References 95 publications

Hydrothermal Synthesis of a Graphene‐based Composite Enabling the Fabrication of a Current Collector‐free Microsupercapacitor with Improved Energy Storage Performance

Hydrothermal Synthesis of a Graphene‐based Composite Enabling the Fabrication of a Current Collector‐free Microsupercapacitor with Improved Energy Storage Performance

Futuristic Advancements in Biomass‐Derived Graphene Nanoassemblies: Versatile Biosensors for Point‐of‐Care Devices

A high valence binary metal–organic framework as an electrode material for aqueous asymmetric supercapacitors

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