Electrode potentials in electrochemical double-layer capacitors with asymmetric electrode thicknesses

Article Chemistry, Physical

High voltage electrochemical capacitors operating at elevated temperature based on 1,1 -dimethylpyrrolidinium tetrafluoroborate

L. Koeps et al.

Summary: This manuscript explores the application of 1,1-dimethylpyrrolidinium tetrafluoroborate as a conducting salt for EDLCs, demonstrating increased performance and stability of the capacitors.

ENERGY STORAGE MATERIALS (2022)

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Review Chemistry, Applied

Specializing liquid electrolytes and carbon-based materials in EDLCs for low-temperature applications

Pui-yan Hung et al.

Summary: Electric double-layer capacitors (EDLCs) are emerging technologies that play a critical role in meeting the demand for sustainable energy storage devices. This article provides an overview of the performance and challenges of EDLCs at extremely low temperatures, including the selection of electrolytes and electrode materials, as well as strategies to improve their performance.

JOURNAL OF ENERGY CHEMISTRY (2022)

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Review Energy & Fuels

Today's progress in the synthesis of porous carbons from biomass and their application for organic electrolyte and ionic liquid based supercapacitors

Petr M. Yeletsky et al.

Summary: This review article focuses on the recent advances in the development of biomass-derived activated carbons and their application as electrode materials for electric double layer capacitors (EDLCs). The article discusses various approaches to production of activated carbons from biomass and highlights their performance as materials for EDLCs. The requirements and synthesis approaches to achieve EDLCs with high energy accumulation characteristics are also formulated.

JOURNAL OF ENERGY STORAGE (2022)

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Review Energy & Fuels

Recent trends in electrolytes for supercapacitors

T. S. Bhat et al.

Summary: This article discusses the latest types of electrolytes for supercapacitors and emphasizes the importance of understanding the electrode-electrolyte interaction in this field.

JOURNAL OF ENERGY STORAGE (2022)

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Article Forestry

Design of wood-derived anisotropic structural carbon electrode for high-performance supercapacitor

Feng Wang et al.

Summary: This study explores the development of thick carbon electrodes derived from basswood and their application in high energy density supercapacitors. The anisotropic structural carbon electrodes derived from wood exhibit different transfer kinetics of the electrolyte, which significantly impacts the electrochemical performance, especially at high current density. The results show that the cross-sectional wood-derived carbon with high specific surface area contributes to excellent electrochemical performance, attributed to its hierarchical porous structure that allows easy access for the electrolytes even at high current density. This work provides insights into the dynamic behaviors of electrolyte in different wood sections and can be extended to other wood species and wood-like structures for energy storage applications.

WOOD SCIENCE AND TECHNOLOGY (2022)

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Article Electrochemistry

MOF-derived hierarchical carbon network as an extremely-high-performance supercapacitor electrode

Jyotshna Pokharel et al.

Summary: A novel hierarchical porous carbon material with highly conductive electronic pathways and rich ionic storage units demonstrates high specific capacitance for EDLC, achieved through facile hydrothermal synthesis and carbonization. The material shows promising potential for high-performance energy devices, delivering a high energy density of 10.51 Wh kg(-1) and a power density of 5.454 kW kg(-1) at the current density of 10 A g(-1) in aqueous electrolyte.

ELECTROCHIMICA ACTA (2021)

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Review Energy & Fuels

A comprehensive review of lithium ion capacitor: development, modelling, thermal management and applications

Mahdi Soltani et al.

Summary: The article reviews the materials, electro-thermal model, lifetime model, thermal model, and thermal management system of the lithium ion capacitor (LIC). Various electro-chemical methods, equivalent circuit model, and fractional order model for LIC electro-thermal modeling are summarized. Different lifetime modeling methods and thermal management system design aspects are covered, along with potential applications of LIC technology with other high-energy devices for hybrid energy storage.

JOURNAL OF ENERGY STORAGE (2021)

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Article Energy & Fuels

Lignocellulose based Bio-waste Materials derived Activated Porous Carbon as Superior Electrode Materials for High-Performance Supercapacitor

Monojit Mondal et al.

Summary: The study focuses on synthesizing activated porous carbon using a high-temperature controlled heating process in an inert atmosphere with bio-waste materials' KOH activation process. The activated porous carbon exhibits high specific surface area, specific capacitance, and long cycle stability, making it a prospective candidate for new functional materials in energy storage applications.

JOURNAL OF ENERGY STORAGE (2021)

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Article Chemistry, Physical

Amide-based deep eutectic solvents containing LiFSI and NaFSI salts as superionic electrolytes for supercapacitor applications

Samia Amara et al.

Summary: This study introduces two deep eutectic solvents as electrolytes for activated carbon electrochemical double-layer capacitors, showing promising electrochemical performance at 25 degrees C. These electrolytes exhibit a large electrochemical window, good thermal stability, and moderate viscosity, surpassing standard organic electrolytes in terms of ionic conductivity.

JOURNAL OF CHEMICAL PHYSICS (2021)

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Review Nanoscience & Nanotechnology

The implementation of graphene-based aerogel in the field of supercapacitor

Jasmin S. Shaikh et al.

Summary: Graphene and graphene-based hybrid materials are excellent supercapacitor electrode materials due to their high surface area, electrical conductivity, and cycling stabilities. Aerogels, with their lightweight, high porosity and specific surface area, are pragmatic choices for supercapacitors. By combining graphene aerogels with pseudocapacitive materials, an efficient energy and power density performance can be achieved.

NANOTECHNOLOGY (2021)

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Article Multidisciplinary Sciences

High energy density and extremely stable supercapacitors based on carbon aerogels with 100% capacitance retention up to 65,000 cycles

Yu Ma et al.

Summary: A facile and sustainable strategy for scalable fabrication of carbon aerogels with high specific capacitance and remarkable stability was reported, demonstrating superior energy storage performance compared to state-of-the-art supercapacitors.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2021)

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Article Chemistry, Physical

Hierarchical porous carbon composite constructed with 1-D CNT and 2-D GNS anchored on 3-D carbon skeleton from spent coffee grounds for supercapacitor

Wenwei He et al.

Summary: Biomass-derived carbon electrode materials with a unique hierarchical porous carbon composite structure, featuring graphene nanosheets (GNS) and carbon nanotubes (CNT) anchored on a 3D carbon skeleton, exhibit high capacitance, energy density, and long-term stability for high-performance supercapacitor applications.

APPLIED SURFACE SCIENCE (2021)

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Article Engineering, Environmental

Phosphorus-doped thick carbon electrode for high-energy density and long-life supercapacitors

Feng Wang et al.

Summary: The high-phosphorus-doped wood-derived carbon thick electrode developed through phytic acid treatment exhibits outstanding electrochemical performance, especially in terms of energy density and cyclic stability.

CHEMICAL ENGINEERING JOURNAL (2021)

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Article Energy & Fuels

The effect of poly(vinylidene fluoride) binder on the electrochemical performance of graphitic electrodes

Sreelakshmi Rajeevan et al.

Summary: The addition of PVDF as a binder significantly enhances the electrochemical performance of graphite electrodes. PVDF provides a compact arrangement to bind the electrodes. The PVDF composite electrode with 5 g graphite exhibits good capacitance behavior and low internal resistance.

JOURNAL OF ENERGY STORAGE (2021)

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Article Chemistry, Multidisciplinary

Controlling the flake size of bifunctional 2D WSe2 nanosheets as flexible binders and supercapacitor materials

Pawin Iamprasertkun et al.

Summary: A new approach of using WSe2 nanoflakes as pseudo capacitive binders in electrical supercapacitors has shown outstanding electrochemical performance, expanding understanding of TMD materials and improving overall performance by enhancing capacitance, reducing charge transfer resistance, and improving self-discharge potential.

NANOSCALE ADVANCES (2021)

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Article Electrochemistry