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A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "D1: Advanced Energy Materials".

Deadline for manuscript submissions: closed (25 June 2021) | Viewed by 25100

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Special Issue Editors

Prof. Dr. Jung Kyoo Lee

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Guest Editor

Department of Chemical Engineering, Dong-A University, Busan 49315, Korea
Interests: functional nanomaterials; batteries; catalysis; electrocatalysis; energy storage

Prof. Dr. Eun-Suok Oh

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Co-Guest Editor

School of Chemical Engineering, University of Ulsan, Ulsan 44610, Korea
Interests: lithium ion battery; supercapacitor; polymer

Special Issue Information

Dear Colleagues,

With the advances in four key components (electrode materials, electrolyte and separator and binder) for lithium ion battery (LIB) technology, LIB has become the dominating choice of energy storage devices for mobile electronics, many electrified vehicles, energy storage system (ESS) and etc. LIB market is expected to grow faster and larger than ever before in near future in line with environmental-friendly economic growth worldwide. Hence, there is growing interests in enhancing the energy density, safety, life time and reliability of LIBs, which strongly requires innovative basic research and development for advanced materials and technologies. This Special Issue is focused on to bring together the innovative ideas and key material science for advanced LIB technology of future.

Potential topics include, but are not limited to:

Advanced anode and cathode materials;
New electrolyte, binder and separator technologies;
Full LIB cell design, engineering and diagnosis;
Advanced electrochemical analysis and mechanism studies

Prof. Dr. Jung Kyoo Lee
Guest Editor
Prof. Dr. Eun-Suok Oh
Co-Guest Editor

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Keywords

Advance lithium batteries
Cathode and anode materials
New electrolytes and binders
New separator technologies

Published Papers (7 papers)

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Research

12 pages, 3952 KiB

Open AccessArticle

Enhanced Electrochemical Performances of Hollow-Structured N-Doped Carbon Derived from a Zeolitic Imidazole Framework (ZIF-8) Coated by Polydopamine as an Anode for Lithium-Ion Batteries

by Da-Won Lee, Achmad Yanuar Maulana, Chaeeun Lee, Jungwook Song, Cybelle M. Futalan and Jongsik Kim

Energies 2021, 14(9), 2436; https://doi.org/10.3390/en14092436 - 24 Apr 2021

Cited by 6 | Viewed by 3152

Abstract

Doping heteroatoms such as nitrogen (N) and boron (B) into the framework of carbon materials is one of the most efficient methods to improve the electrical performance of carbon-based electrodes. In this study, N-doped carbon has been facilely synthesized using a ZIF-8/polydopamine precursor. The polyhedral structure of ZIF-8 and the effective surface-coating capability of dopamine enabled the formation of N-doped carbon with a hollow structure. The ZIF-8 polyhedron served as a sacrificial template for hollow structures, and dopamine participated as a donor of the nitrogen element. When compared to ZIF-8-derived carbon, the HSNC electrode showed an improved reversible capacity of approximately 1398 mAh·g⁻¹ after 100 cycles, with excellent cycling retention at a voltage range of 0.01 to 3.0 V using a current density of 0.1 A·g⁻¹. Full article

(This article belongs to the Special Issue Advanced Materials and Technologies for Lithium-Ion Battery)

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12 pages, 21364 KiB

Open AccessArticle

Preparation and Characterization of Core-Shell Structure Hard Carbon/Si-Carbon Composites with Multiple Shell Structures as Anode Materials for Lithium-Ion Batteries

by Jong-Chan Kim, Kyung-Jin Kim and Sung-Man Lee

Energies 2021, 14(8), 2104; https://doi.org/10.3390/en14082104 - 9 Apr 2021

Cited by 9 | Viewed by 4004

Abstract

Novel core-shell structure hard carbon/Si-carbon composites are prepared, and their electrochemical performances as an anode material for lithium-ion batteries are reported. Three different types of shell coating are applied using Si-carbon, Si-carbon black-carbon and Si-carbon black-carbon/graphite nanosheets. It appears that the use of n-Si/carbon black/carbon composite particles in place of n-Si for the shell coating is of great importance to achieve enhanced electrochemical performances from the core-shell composite samples, and additional wrapping with graphite nanosheets leads to a more stable cycle performance of the core-shell composites. Full article

(This article belongs to the Special Issue Advanced Materials and Technologies for Lithium-Ion Battery)

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14 pages, 2778 KiB

Open AccessArticle

Achieving High-Performance Spherical Natural Graphite Anode through a Modified Carbon Coating for Lithium-Ion Batteries

by Hae-Jun Kwon, Sang-Wook Woo, Yong-Ju Lee, Je-Young Kim and Sung-Man Lee

Energies 2021, 14(7), 1946; https://doi.org/10.3390/en14071946 - 1 Apr 2021

Cited by 10 | Viewed by 6385

Abstract

The electrochemical performance of modified natural graphite (MNG) and artificial graphite (AG) was investigated as a function of electrode density ranging from 1.55 to 1.7 g∙cm⁻³. The best performance was obtained at 1.55 g∙cm⁻³ and 1.60 g∙cm⁻³ for the AG and MNG electrodes, respectively. Both AG, at a density of 1.55 g∙cm⁻³, and MNG, at a density of 1.60 g∙cm⁻³, showed quite similar performance with regard to cycling stability and coulombic efficiency during cycling at 30 and 45 °C, while the MNG electrodes at a density of 1.60 g∙cm⁻³ and 1.7 g∙cm⁻³ showed better rate performance than the AG electrodes at a density of 1.55 g∙cm⁻³. The superior rate capability of MNG electrodes can be explained by the following effects: first, their spherical morphology and higher electrode density led to enhanced electrical conductivity. Second, for the MNG sample, favorable electrode tortuosity was retained and thus Li+ transport in the electrode pore was not significantly affected, even at high electrode densities of 1.60 g∙cm⁻³ and 1.7 g∙cm⁻³. MNG electrodes also exhibited a similar electrochemical swelling behavior to the AG electrodes. Full article

(This article belongs to the Special Issue Advanced Materials and Technologies for Lithium-Ion Battery)

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10 pages, 16097 KiB

Open AccessArticle

Application of a Polyacrylate Latex to a Lithium Iron Phosphate Cathode as a Binder Material

by Mi Tian, Yanchunxiao Qi and Eun-Suok Oh

Energies 2021, 14(7), 1902; https://doi.org/10.3390/en14071902 - 30 Mar 2021

Cited by 10 | Viewed by 3950

Abstract

In the manufacturing process of lithium-ion batteries, the current organic solvent-based processes will inevitably be replaced with eco-friendly water-based processes. For this purpose, the current organic-soluble binder should be replaced with a water-soluble or water-dispersed binder. In this study, a new polyacrylate latex dispersed in water was successfully applied as a binder of lithium-ion battery cathodes for the first time. One of the biggest advantages of the polyacrylate binder is that it is electrochemically stable at the working voltage of typical cathodes, unlike a conventional water-dispersed styrene-butadiene binder. This implies that the water-dispersed polyacrylate has no limitations for the usage of a cathodic binder. The performance of the polyacrylate binder for lithium iron phosphate cathodes was compared with those of a conventional organic-based polyvinylidene fluoride binder as well as a water-dispersed styrene-butadiene binder. The polyacrylate binder exhibited an electrochemical performance that was comparable to that of an existing styrene-butadiene binder and much better than that of the polyvinylidene fluoride binder. This superior performance of the polyacrylate binder is attributed to the point-to-point bonding mechanism of an emulsified binder, which leads to a strong adhesion strength as well as the low electrical and charge transfer resistances of the cathodes. Full article

(This article belongs to the Special Issue Advanced Materials and Technologies for Lithium-Ion Battery)

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17 pages, 4754 KiB

Open AccessArticle

An Active Cascaded Battery Voltage Balancing Circuit Based on Multi-Winding Transformer with Small Magnetizing Inductance

by Young-Hwa Park, Rae-Young Kim and Yeong-Jun Choi

Energies 2021, 14(5), 1302; https://doi.org/10.3390/en14051302 - 27 Feb 2021

Cited by 5 | Viewed by 1970

Abstract

This paper covers the active voltage balancing method of secondary batteries. The number of applications using secondary batteries is increasing, and the batteries are normally connected in series/parallel to increase discharge cycle and power. The problem is that when there is a voltage imbalance between the cells or modules of a battery, there is a risk of an accident in the near-sighted way, shortening the life of the battery cells. Although this risk was prevented through passive balancing, this approach has limitations, including heat generation, long balancing time, and in the case of a battery that needs to be balanced between modules (or between stacks), its effectiveness decreases. Therefore, in this paper, an active cell balancing method that can overcome the limitations mentioned before is proposed. The proposed method uses a multi-winding transformer, and to increase the power density, the magnetizing inductance is decreased, and an auxiliary circuit is added. The validity of the proposed circuit was verified through mode analysis and simulation. In addition, waveforms showing the balancing performance under various conditions and the comparison results between conventional and proposed methods are given. Full article

(This article belongs to the Special Issue Advanced Materials and Technologies for Lithium-Ion Battery)

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11 pages, 4551 KiB

Open AccessArticle

Porous Manganese Oxide Networks as High-Capacity and High-Rate Anodes for Lithium-Ion Batteries

by Jaeho Choi, Woo Jin Byun, DongHwan Kang and Jung Kyoo Lee

Energies 2021, 14(5), 1299; https://doi.org/10.3390/en14051299 - 26 Feb 2021

Cited by 1 | Viewed by 2167

Abstract

A mesoporous MnO_x network (MMN) structure and MMN/C composites were prepared and evaluated as anodes for high-energy and high-rate lithium-ion batteries (LIB) in comparison to typical manganese oxide nanoparticle (MnNP) and graphite anodes, not only in a half-cell but also in a full-cell configuration (assembled with an NCM523, LiNi_0.5Co_0.2Mn_0.3O₂, cathode). With the mesoporous features of the MMN, the MMN/C exhibited a high capacity (approximately 720 mAh g⁻¹ at 100 mA g⁻¹) and an excellent cycling stability at low electrode resistance compared to the MnNP/C composite. The MMN/C composite also showed much greater rate responses than the graphite anode. Owing to the inherent high discharge (de-lithiation) voltage of the MMN/C than graphite as anodes, however, the MMN‖NCM523 full cell showed approximately 87.4% of the specific energy density of the Gr‖NCM523 at 0.2 C. At high current density above 0.2 C, the MMN‖NCM523 cell delivered much higher energy than the Gr‖NCM523 mainly due to the excellent rate capability of the MMN/C anode. Therefore, we have demonstrated that the stabilized and high-capacity MMN/C composite can be successfully employed as anodes in LIB cells for high-rate applications. Full article

(This article belongs to the Special Issue Advanced Materials and Technologies for Lithium-Ion Battery)

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24 pages, 6754 KiB

Open AccessArticle

The Comparative Study on the Li-S and Li-ion Batteries Cooperating with the Photovoltaic Array

by Krystian Siczek, Krzysztof Siczek, Piotr Piersa, Łukasz Adrian, Szymon Szufa, Andrzej Obraniak, Przemysław Kubiak, Wojciech Zakrzewicz and Grzegorz Bogusławski

Energies 2020, 13(19), 5109; https://doi.org/10.3390/en13195109 - 1 Oct 2020

Cited by 6 | Viewed by 2379

Abstract

The stationary photovoltaic array can be used to charge the different vehicle batteries and, in parallel, be used as a power source for the utility grid or standalone devices placed such as in campers. The main objective of the study was to compare chosen electrical characteristics of two assemblies with each containing the same PV array, boost converter and inverter, and a different battery, such as the Li-S one and the Li-ion one, respectively. Differences occurring during modelling of Li-ion and Li-S batteries were discussed. The model of the chosen photovoltaic array was used during analysis. The models based on electrical equivalent circuits for Li-ion battery and of Li-S battery were utilized during calculations. The models of the boost converter and boost inverter of known topology parameters were utilized during simulations. In the chosen performances (courses of voltages and currents versus time) obtained from the simulation of the sets composed of the Li-S battery cooperating with the boost inverter or the boost converter, only small differences or no differences occurred when compared to the case of the Li-ion battery. Full article

(This article belongs to the Special Issue Advanced Materials and Technologies for Lithium-Ion Battery)

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