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Special Issue Editors

Dr. Tianming Li

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Guest Editor

Material Systems for Nanoelectronics, Chemnitz University of Technology, 09107 Chemnitz, Germany
Interests: on-chip energy storage devices

Dr. Shuoqing Zhao

E-Mail Website
Guest Editor

School of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, China
Interests: energy storage devices

Special Issue Information

Dear Colleagues,

Tiny robots and sensors require tiny energy storage systems. The rapid development of portable, wearable, integratable, and implantable electronics has greatly stimulated a huge demand for miniaturized energy storage devices. With their high-power density and long-term cycle lifetime, micro-supercapacitors (MSCs) have attracted considerable attention in integrated microsystems. This Special Issue focuses on the recent advances, challenges, and outlooks on micro-supercapacitors. For example, the improvement of charge storage capability and transfer efficiency; the versatile physicochemical properties of supercapacitors at the microscopic scale; clever architectures to shrink MSCs and integrate them with other functional components; and the potential applications of these integrated MSCs in modern society.

This edition discusses the suitability of micro-supercapacitors for applications and pushes the current performance limitations of device configurations.

Potential topics include but are not limited to:

Material selection: electrodes, electrolytes and current collectors;
The compatibility between materials and the microfabrication process;
Deposition technology for electrodes and electrolytes;
The architecture design;
Packaging techniques;
Integration and multifunctionality;
Performance evaluation and degradation mechanism studies;
Modeling and simulation.

Dr. Tianming Li
Dr. Shuoqing Zhao
Guest Editors

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Batteries is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

micro supercapacitors
micro fabrication
material development
packaging technology

Published Papers (2 papers)

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Research

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13 pages, 3941 KiB

Open AccessArticle

Overcoming Challenges in Development of Manganese Oxide Supercapacitor Cathodes by Alkali-Free Hydrothermal Synthesis

by Mahmoud Awad, Mohamed Nawwar and Igor Zhitomirsky

Batteries 2023, 9(7), 365; https://doi.org/10.3390/batteries9070365 - 8 Jul 2023

Cited by 1 | Viewed by 1207

Abstract

This investigation is motivated by the need in the development of manganese oxide cathodes for supercapacitors with high capacitance at high charge–discharge rates and enhanced capacitance retention in a wide range of charge–discharge rates. It also addresses the challenge of eliminating the time-consuming activation procedure, which limits the applications of Mn₃O₄ cathodes. The new approach is based on the use of environmentally friendly and biocompatible pH modifiers–dispersants, such as polyethylenimine (PEI) and meglumine (MG) for hydrothermal synthesis. In this approach, the use of inorganic alkalis is avoided. We demonstrate the benefits of this approach for the fabrication of manganese oxide nanoparticles, such as Mn-PEI and Mn-MG. Electrodes with a high active mass of 40 mg cm⁻² are fabricated and electrochemically tested in 0.5 M Na₂SO₄ electrolyte. The method of electrode material fabrication offers benefits for the accelerated electrode activation procedure, which is practically eliminated for Mn-MG electrodes. The Mn-MG electrodes showed a remarkably high capacitance of 3.68 F cm⁻² (93.19 F g⁻¹) at a sweep rate of 100 mV s⁻¹ and a high capacitance retention of 90.6% in the CV sweep range of 1–100 mV s⁻¹. Full article

(This article belongs to the Special Issue Micro Supercapacitors: Recent Advance, Challenge and Outlook)

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Graphical abstract

Review

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24 pages, 7316 KiB

Open AccessReview

A Review on Recent Progress Achieved in Boron Carbon Nitride Nanomaterials for Supercapacitor Applications

by Feng Liu, Xiang Zhao, Ping Shi, Laishi Li, Qidi Dong, Mi Tian, Yusheng Wu and Xudong Sun

Batteries 2023, 9(8), 396; https://doi.org/10.3390/batteries9080396 - 30 Jul 2023

Cited by 3 | Viewed by 1686

Abstract

Supercapacitors are regarded as reliable energy storage devices to alleviate the energy crisis and environmental pollution. However, the relatively low capacitance and low energy density limit the practical application of supercapacitors. In this context, boron carbon nitride (BCN) nanomaterials have been extensively studied in the past decade due to their chemical and thermal stability, high mechanical strength, as well as tunable bandgap. The specific capacitance and energy density of supercapacitors can be significantly improved by fabricating nanostructured BCN-based electrode materials. In this review, the recent advances in the application of BCN-based materials in supercapacitors is presented. Strategies such as structure design, porosity/defect engineering, and hybrid nanostructure construction to boost the electrochemical performance of BCN-based materials are provided and, finally, promising research directions for novel energy storage materials are proposed. Full article

(This article belongs to the Special Issue Micro Supercapacitors: Recent Advance, Challenge and Outlook)

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