Recent Advances in Electrode Interface Microstructure of Battery

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Materials for Energy Applications".

Deadline for manuscript submissions: closed (15 July 2024) | Viewed by 697

Special Issue Editors


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Guest Editor
Department of Physics, University of Puerto-Rico, P. O. Box 70377, San Juan, PR 00936-8377, USA
Interests: oxide ceramics; ferroelectrics; semiconductor materials; Li-ion/Li-S battery materials; thin films and nanotechnology; nano-structured materials and films; Raman spectroscopy

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Guest Editor
Graduate School of Pure and Applied Science, University of Tsukuba, Tsukuba 305-8577, Japan
Interests: cathode material; annode material; crystal structure; local structure; phase transition; electronic state; in situ experiment; themal effect on voltage; pressure effect on voltage; calculation/simulation; phenomenological model; other topics on sodium-ion battery material
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Special Issue Information

Dear Colleagues,

Batteries are devices that store and deliver electrical energy for a wide variety of applications. Among different types of batteries, lithium-ion batteries (LIBs) are currently the most promising technology; however, there are still many challenges and limitations that hinder the further improvement and widespread adoption of LIBs. These include safety issues, capacity fading, rate performance, and cost. To address these challenges, it is crucial to understand and optimize the structure and properties of battery components, especially the electrodes and the interfaces.

The microstructure of the electrodes determines the transport and reaction processes of lithium ions and electrons within the electrodes, as well as the mechanical stability and durability of the electrodes themselves. Therefore, close study of the electrode microstructure can unravel relationships between the structure and the electrochemical performance of LIBs, and provide guidance in terms of designing and fabricating enhanced electrodes exhibiting the desired characteristics.

The interfaces of LIBs are where different phases or components meet and interact with one another, such as solid–solid interfaces (i.e., active material–conductive additive, active material–binder, and electrode–current collector) and solid–liquid interfaces (i.e., electrode–electrolyte). The interfaces play a vital role in determining the kinetics of charge transfer, interfacial resistance, side reactions, interface stability, and the overall safety of LIBs. Therefore, studying the interfaces of LIBs can help us to understand and control the interfacial phenomena that dictate battery performance.

This Special Issue is dedicated to the latest innovations in battery technology. More specifically, it includes studies aiming to improve battery performance by investigating the microstructural, interfacial, and mechanical factors that control battery processes such as transport, reaction, degradation, and safety. It also includes studies reporting strategies designed to produce batteries with higher energy densities and capacities, longer cycle lives, and enhanced safety.

Prof. Dr. Ram S. Katiyar
Prof. Dr. Yutaka Moritomo
Guest Editors

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Keywords

  • battery microstructure
  • battery interfaces
  • li-ion battery
  • structural characterization
  • microscopy
  • nano materials

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Published Papers (1 paper)

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Research

11 pages, 2653 KiB  
Article
An Electrochemical-Cycling-Induced Capacitive Component on the Surface of an Electrophoretic-Deposited Lithium Iron Phosphate Cathode
by Byoung-Nam Park
Crystals 2024, 14(7), 658; https://doi.org/10.3390/cryst14070658 - 18 Jul 2024
Viewed by 494
Abstract
In our research, we apply electrophoretic deposition (EPD) using AC voltage to investigate how high-C-rate electrochemical reactions affect pseudocapacitive charge storage in lithium iron phosphate (LFP) Li-ion batteries. This method significantly raises the battery’s specific capacity, achieving ~90 mAh/g at a 1 C-rate, [...] Read more.
In our research, we apply electrophoretic deposition (EPD) using AC voltage to investigate how high-C-rate electrochemical reactions affect pseudocapacitive charge storage in lithium iron phosphate (LFP) Li-ion batteries. This method significantly raises the battery’s specific capacity, achieving ~90 mAh/g at a 1 C-rate, along with outstanding cycle stability. Although we observe some capacity reduction over numerous cycles, there is a notable increase in the pseudocapacitive contribution to the battery’s charge storage. This is demonstrated by the consistent peak positions and currents during CV and a stable diffusion constant maintained at 9.6 × 10−9 cm2∙s−1. These findings highlight the battery’s durability, especially in high-demand scenarios. After an extended cycling period of ~500 cycles, the redox peaks related to the Fe2+/Fe3+ redox processes remain unchanged in terms of magnitude and position, indicating the battery’s excellent reversibility. Full article
(This article belongs to the Special Issue Recent Advances in Electrode Interface Microstructure of Battery)
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