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Surface Coating in Advanced Energy Storage Devices

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A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Surface Engineering for Energy Harvesting, Conversion, and Storage".

Deadline for manuscript submissions: closed (31 May 2022) | Viewed by 17376

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Special Issue Editors

Dr. Yifan Dong

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Guest Editor

Faculty of Materials Science and Chemistry, China University of Geosciences, No. 388 Lumo Road, Wuhan, China
Interests: 1. nano energy materials and devices, including lithium ion batteries, sodium ion batteries, zinc batteries, flow batteries, super capacitors, etc. 2. near-infrared and mid-infrared photodetectors, including photodetectors based on quantum dots, modified

Dr. Hao Shen

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Guest Editor

School of Materials Science and Engineering, Xi'an Jiaotong University, 28 West Xianning Road, Xi'an 710049, Shaanxi, China
Interests: synchrotron X-ray characteristic technologies; solid-state electrolytes; in situ experiment; microscopy and diffraction technologies

Special Issue Information

Dear Colleagues,

Surface coating is a typical topic related to advanced energy conversion and storage in electrochemical methods. A new emerging tendency in recent research and development should be highlighted by introducing coating materials and theories to describe and develop new knowledge and technologies for advanced batteries. To introduce bands, a built-in-field is used to describe the battery’s electrochemical performance and device physics; in particular, recent nanomaterials and their heterostructure have been developed as high ionic transport systems for novel batteries.

This Special Issue aims to cover the recent advances in designing nanostructured materials, and the functions of surfaces and heterostructures at various levels of materials and devices in relation to material properties and device performance. It also aims to cover semiconductor-based materials, nano-composite systems, and principles for electrochemical energy conversion and storage, describing their material properties, device functions with regard to solid interfaces and ionic correlative transport, fundamentals, and working principles, with an intention to advance the understanding of electrochemical devices for energy conversion and storage, as well as applications for emerging demands to promote the new generation of technologies.

Dr. Yifan Dong
Dr. Hao Shen
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

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. Coatings 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 2600 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

nanomaterials
surface coating
energy storage devices

Published Papers (3 papers)

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Research

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12 pages, 3418 KiB

Open AccessArticle

Reduction of Surface Residual Lithium Compounds for Single-Crystal LiNi_0.6Mn_0.2Co_0.2O₂ via Al₂O₃ Atomic Layer Deposition and Post-Annealing

by Jiawei Li, Junren Xiang, Ge Yi, Yuanting Tang, Huachen Shao, Xiao Liu, Bin Shan and Rong Chen

Coatings 2022, 12(1), 84; https://doi.org/10.3390/coatings12010084 - 12 Jan 2022

Cited by 8 | Viewed by 3704

Abstract

Surface residual lithium compounds of Ni-rich cathodes are tremendous obstacles to electrochemical performance due to blocking ion/electron transfer and arousing surface instability. Herein, ultrathin and uniform Al₂O₃ coating via atomic layer deposition (ALD) coupled with the post-annealing process is reported to reduce residual lithium compounds on single-crystal LiNi_0.6Mn_0.2Co_0.2O₂ (NCM622). Surface composition characterizations indicate that LiOH is obviously reduced after Al₂O₃ growth on NCM622. Subsequent post-annealing treatment causes the consumption of Li₂CO₃ along with the diffusion of Al atoms into the surface layer of NCM622. The NCM622 modified by Al₂O₃ coating and post-annealing exhibits excellent cycling stability, the capacity retention of which reaches 92.2% after 300 cycles at 1 C, much higher than that of pristine NCM622 (34.8%). Reduced residual lithium compounds on NCM622 can greatly decrease the formation of LiF and the degree of Li⁺/Ni²⁺ cation mixing after discharge–charge cycling, which is the key to the improvement of cycling stability. Full article

(This article belongs to the Special Issue Surface Coating in Advanced Energy Storage Devices)

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11 pages, 3431 KiB

Open AccessFeature PaperEditor’s ChoiceArticle

Three-Dimensional Carbon-Coated LiFePO₄ Cathode with Improved Li-Ion Battery Performance

by Can Wang, Xunlong Yuan, Huiyun Tan, Shuofeng Jian, Ziting Ma, Junjie Zhao, Xuewen Wang, Dapeng Chen and Yifan Dong

Coatings 2021, 11(9), 1137; https://doi.org/10.3390/coatings11091137 - 18 Sep 2021

Cited by 13 | Viewed by 4249

Abstract

LiFePO₄ (LFPO)has great potential as the cathode material for lithium-ion batteries; it has a high theoretical capacity (170 m·A·h·g⁻¹), high safety, low toxicity and good economic benefits. However, low conductivity and a low diffusion rate inhibit its future development. To overcome these weaknesses, three-dimensional carbon-coated LiFePO₄ that incorporates a high capacity, superior conductivity and low volume expansion enables faster electron transport channels. The use of Cetyltrimethyl Ammonium Bromid (CTAB) modification only requires a simple water bath and sintering, without the need to add a carbon source in the LFPO synthesis process. In this way, the electrode shows excellent reversible capacity, as high as 159.8 m·A·h·g⁻¹ at 2 C, superior rate capability with 97.3 m·A·h·g⁻¹ at 5 C and good cycling ability, preserving ~84.2% capacity after 500 cycles. By increasing the ion transport rate and enhancing the structural stability of LFPO nanoparticles, the LFPO-positive electrode achieves excellent initial capacity and cycle life through cost-effective and easy-to-implement carbon coating. This simple three-dimensional carbon-coated LiFePO₄ provides a new and simple idea for obtaining comprehensive and high-performance electrode materials in the field of lithium cathode materials. Full article

(This article belongs to the Special Issue Surface Coating in Advanced Energy Storage Devices)

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Review

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22 pages, 6269 KiB

Open AccessReview

A Comparative Review of Metal Oxide Surface Coatings on Three Families of Cathode Materials for Lithium Ion Batteries

by Thabang Ronny Somo, Tumiso Eminence Mabokela, Daniel Malesela Teffu, Tshepo Kgokane Sekgobela, Brian Ramogayana, Mpitloane Joseph Hato and Kwena Desmond Modibane

Coatings 2021, 11(7), 744; https://doi.org/10.3390/coatings11070744 - 22 Jun 2021

Cited by 26 | Viewed by 8019

Abstract

In the recent years, lithium-ion batteries have prevailed and dominated as the primary power sources for mobile electronic applications. Equally, their use in electric resources of transportation and other high-level applications is hindered to some certain extent. As a result, innovative fabrication of lithium-ion batteries based on best performing cathode materials should be developed as electrochemical performances of batteries depends largely on the electrode materials. Elemental doping and coating of cathode materials as a way of upgrading Li-ion batteries have gained interest and have modified most of the commonly used cathode materials. This has resulted in enhanced penetration of Li-ions, ionic mobility, electric conductivity and cyclability, with lesser capacity fading compared to traditional parent materials. The current paper reviews the role and effect of metal oxides as coatings for improvement of cathode materials in Li-ion batteries. For layered cathode materials, a clear evaluation of how metal oxide coatings sweep of metal ion dissolution, phase transitions and hydrofluoric acid attacks is detailed. Whereas the effective ways in which metal oxides suppress metal ion dissolution and capacity fading related to spinel cathode materials are explained. Lastly, challenges faced by olivine-type cathode materials, namely; low electronic conductivity and diffusion coefficient of Li⁺ ion, are discussed and recent findings on how metal oxide coatings could curb such limitations are outlined. Full article

(This article belongs to the Special Issue Surface Coating in Advanced Energy Storage Devices)

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