Article
Materials Science, Multidisciplinary
Jin Liu, Xingcheng Xiao, Daad Haddad, Qinglin Zhang, Mei Cai, Sherman Zeng
Summary: The study shows that using lithium-ion exchanged zeolite (Li-zeolite) as an additive to cathode electrodes can improve battery cycle life, especially performing better at high temperatures. Li-zeolite is envisioned as a low-cost and scalable path to enhance the performance of LMO and LMO blended electrodes.
ADVANCED MATERIALS TECHNOLOGIES
(2021)
Article
Nanoscience & Nanotechnology
Yuji Mahara, Naoyuki Nagasako, Hideaki Oka, Yasuhito Kondo, Satoru Kosaka, Hiroyuki Nakano, Takamasa Nonaka, Yoshinari Makimura
Summary: In this study, we found that Li1.12Mn0.74O1.60F0.40 positive electrodes with a loose-crystalline rock salt structure show stable and high capacity, with little change in the charge-discharge curve. The introduction of F-Mn bonds in the positive electrode suppresses the local spinel transition in Mn-based positive electrodes.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Chenxi Geng, Divya Rathore, Dylan Heino, Ning Zhang, Ines Hamam, Nafiseh Zaker, Gianluigi A. Botton, Roee Omessi, Nutthaphon Phattharasupakun, Toby Bond, Chongyin Yang, J. R. Dahn
Summary: The addition of tungsten has been found to greatly improve the capacity retention of Ni-rich layered oxide cathode materials in lithium-ion batteries by forming amorphous LixWyOz phases, restricting primary particle growth, and increasing resistance to microcracking, as confirmed through structural analysis and electron microscopy.
ADVANCED ENERGY MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Zahra Ahaliabadeh, Ville Miikkulainen, Miia Mantymaki, Seyedabolfazl Mousavihashemi, Jouko Lahtinen, Yao Lide, Hua Jiang, Kenichiro Mizohata, Timo Kankaanpaa, Tanja Kallio
Summary: Nickel-rich layered oxides like NMC622 suffer from poor durability at high voltages, but nanoscale coatings of TiOx and LixTiyOz have been found to enhance their electrochemical performance. The coatings reduce side reactions, suppress electrode degradation mechanisms, and improve cycle life and capacity. This study provides insight into enhancing the performance of Ni-rich positive electrode materials under high-voltage ranges.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Ravindra Kempaiah, Henry Chan, Srilok Srinivasan, Subramanian K. R. S. Sankaranarayanan, Badri Narayanan, Arunkumar Subramanian
Summary: This study used density functional theory calculations to examine the impact of stabilizing potassium cation concentration on tunneled manganese dioxide cathodes in lithium intercalation. Low K+ concentrations were found to result in partially cation-deficient tunnel structures with excellent thermodynamic stability and electronic conductivity, critical for achieving high capacity batteries with enhanced rate capability. These findings offer perspectives for designing low-cost transition metal oxide cathodes for high-performance Li-ion batteries with excellent cycle life.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Yuji Mahara, Yoshinari Makimura, Hideaki Oka, Hiroyuki Nakano, Shin Tajima, Takamasa Nonaka, Tsuyoshi Sasaki
Summary: Research on loose-crystalline rock-salt LiMnO2 synthesized via a mechanochemical method shows high capacity and characteristic signal similar to spinel Li-Mn oxide. In-situ measurements indicate that the lithium storage process of LCRS-LMO is related to spinel-related structure changes during charge/discharge cycles.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Zawar Alam Qureshi, Hanan Abdurehman Tariq, Hiba Mohammad Hafiz, Rana Abdul Shakoor, Siham AlQaradawi, Ramazan Kahraman
Summary: This study presents a novel cobalt-free LiNi0.5Mn1.5O4 cathode material with ceria coating and graphene wrapping. The material exhibits improved cyclability and capacity retention, thanks to the prevention of unwanted phases formation and morphology alteration by the ceria coating, as well as reduced adverse reactions and Mn3+ dissolution by the ceria coating and graphene wrapping. This innovative material design strategy can be applied to enhance the electrochemical performance of other lithium-ion battery cathode materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Tao Wang, Zhanjun Chen, Deliang Chen, Ruirui Zhao
Summary: A novel porous MnO-SiOx @C composite with a mesoporous structure and carbon coating has been successfully prepared as an anode material for lithium-ion batteries. The enhanced electrochemical performance is attributed to the segregation of MnO and SiOx during delithiation, the presence of uniform carbon layers and abundant nanopores, and the formation of Mn2SiO4 phase as a joint to relieve strain force.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Mehrdad Dorri, Cyrus Zamani, Alireza Babaei
Summary: The mechanism of non-stoichiometric MnCo2O4+delta to stoichiometric MnCo2O4 structural transformation in the calcination temperature range of 350-650 degrees C and its morphology evolution from nanoplates with {112} facets to quasi nanoplates with {110} facets in the preferential orientation of [220] direction is investigated. By understanding this mechanism, MnCo2O4 with controlled structure and morphology was synthesized as the anode for Li-ion batteries to overcome capacity fading issue. The optimized electrode exhibited high initial discharge capacity, excellent rate capability, and outstanding cycling performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Chunliu Li, Banglei Zhao, Junfeng Yang, Linchao Zhang, Qianfeng Fang, Xianping Wang
Summary: Li2ZrO3-coated and Al-doped micro-sized monocrystalline LiMn2O4 powder shows superior cycling and rate performance, attributed to the synergistic effect of Al-doping and Li2ZrO3-coating.
Article
Chemistry, Multidisciplinary
Yuming Shu, Jingyao Zeng, Jiangnan Huang, Guorong Hu, Ke Du, Zhongdong Peng, Yanbing B. Cao
Summary: The Sr-modified LMO cathodes, enriched with strontium at grain boundaries, show improved structural stability, reduced migration of Mn ions, and enhanced cycling performance. The incorporation of Sr ions presents a promising strategy for developing long-lasting cathodes.
Review
Electrochemistry
Tumiso E. Mabokela, Assumpta C. Nwanya, Miranda M. Ndipingwi, Sinethemba Kaba, Precious Ekwere, Shane T. Werry, Chinwe O. Ikpo, Kwena D. Modibane, Emmanuel I. Iwuoha
Summary: This article discusses various advances in addressing the drawbacks of LRMO, improving their performance in battery applications. It further explores surface modification techniques and the future development prospects.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
Gyeongbin Ko, Seongdeock Jeong, Sanghyuk Park, Jimin Lee, Seoa Kim, Youngjun Shin, Wooseok Kim, Kyungjung Kwon
Summary: Lithium-ion batteries (LIBs) are crucial for the electric vehicle (EV) industry, and LiNi1-x-yCoxMnyO2 (NCM) is the dominant cathode material used in EV LIBs. Due to the need for increased driving range, Ni content in NCM is maximized, but the resulting Ni-rich NCM is unstable. Doping with foreign elements has been explored as a strategy to overcome this instability, with over 46 elements considered and their effects on LIB performance investigated in numerous research articles. This comprehensive analysis of various doping elements and their impact on LIB performance provides valuable insights for the LIB industry and academia.
ENERGY STORAGE MATERIALS
(2023)
Article
Environmental Sciences
Jie Wang, Yongcan Jiang, Musheng Xu, Cong Han, Lichao Zhang, Guanglong Liu
Summary: Adsorption technology is effective in removing phosphorus from water and recovering phosphorus resources. This study developed an iron-manganese oxide-modified resin composite adsorbent based on the nanoconfinement theory to address the competitive adsorption and pore blockage issues during phosphorus removal. The adsorbent showed good stability, high adsorption capacity, and selectivity for phosphorus even in the presence of coexisting ions and humic acid.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Physical
Kazuhiko Mukai, Takamasa Nonaka, Takeshi Uyama
Summary: Research revealed a two-phase reaction scheme in lithium titanium oxide during lithium-ion battery operation, with distinct structural transformations observed at different scales. Linear, reversible changes in bond distance between titanium and oxygen atoms were observed at the atomic scale, while hysteresis in lattice parameter between discharge and charge reactions was noted at the microscale. These differences in structural changes were attributed to variances in spatial resolutions between XAS and XRD techniques.
ENERGY STORAGE MATERIALS
(2022)
Article
Electrochemistry
Naoya Ishida, Kotaro Kawagoe, Naoto Kitamura, Junji Akimoto, Yasushi Idemoto
Summary: Synthesis of Mn-rich layered Li-x(Mn,Ni,Ti)O-2 was achieved through Na/Li ion exchange, where the presence of tetrahedral Li and TM vacancies were confirmed in the average structure analysis. The electrochemical properties of the compound showed high capacity and cyclability, with the co-substitution of Ni2+ and Ti4+ playing a crucial role in stabilizing the structure and maintaining high capacity during cycles.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2021)
Article
Chemistry, Physical
Hiroshi Nagata, Junji Akimoto
Summary: An all-inorganic oxide solid lithium-ion battery was successfully prepared in this study, employing a 50Li(2)SO(4)-50Li(2)CO(3) glass electrolyte to improve interparticle contact between electrode materials and electrolyte. The battery achieved a high capacity and energy density, with stable cycle performance and no short circuits caused by lithium dendrite growth.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Inorganic & Nuclear
Kunimitsu Kataoka, Junji Akimoto
Summary: In this study, single crystals of Li3.957Sr1.957La0.043ZrO6 with a new crystal structure were successfully grown using the floating zone crystallization method in air. The obtained crystals exhibited excellent lithium-ion conductivity and showed potential as solid electrolytes for lithium-ion batteries at low temperatures.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Physical
Hiroshi Nagata, Junji Akimoto
Summary: This study focuses on improving the performance of the NCM positive composite electrodes in all-solid-state lithium-ion batteries using highly deformable oxide glass electrolytes. Cold pressing the NCM positive composite electrode significantly enhances its capacity, and the LSCB material used as the electrolyte demonstrates excellent suitability.
SOLID STATE IONICS
(2022)
Article
Chemistry, Physical
Hiroshi Nagata, Junji Akimoto
Summary: Oxide solid electrolytes (SEs) are promising materials for all-solid-state lithium-ion batteries. This study combines the advantages of crystalline oxide SEs with high ionic conductivity and deformable oxide glass SEs with good particle contact. The hybrid SEs show higher ionic conductivity and are used in all-solid-state lithium-ion batteries, which exhibit higher area capacity and specific energy density.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Multidisciplinary
Mikito Mamiya, Junji Akimoto
Summary: A stacking layer electrode with a carbon black layer on a silicon monoxide (SiO) film has been developed for lithium-ion batteries. The electrode consists of a dense amorphous SiO film and a layer of carbon black particles. The electro-chemical properties exhibit reversible charge-discharge curves, and the capacity retention rate and Coulomb efficiency are high for 500 cycles. The as-deposited SiO film electrode shows lower capacity and slightly degraded cycle performance.
RESULTS IN CHEMISTRY
(2023)
Article
Nanoscience & Nanotechnology
Tadayoshi Akao, Hideaki Nagai, Kunimitsu Kataoka, Junji Akimoto
Summary: Garnet-type Ta-substituted Li7La3Zr2O12 materials have attracted attention as solid electrolytes for future oxide-based all-solid-state lithium-ion batteries due to their superior ionic conductivity and stabilities. However, high-temperature sintering needed for high lithium-ion conductivity leads to the formation of insulating interface impurities. In this study, low-temperature sintering of submicrometer-sized garnet-type LLZT fine powder at 400 degrees C was demonstrated, achieving high lithium-ion conductivity without interface impurities.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Junji Akimoto, Tadayoshi Akao, Kunimitsu Kataoka
Summary: Nanosized Ta-substituted Li6.5La3Zr1.5Ta0.5O12 (LLZT) samples were successfully prepared at a low temperature of 400 degrees C and showed high room-temperature Li-ion conductivity. The LLZT fine particles were used to fabricate a bulk-type NCM-graphite full battery cell, which exhibited good charge-discharge performance at room temperature. This study provides a new approach for the fabrication of oxide-based all-solid-state batteries through low-temperature sintering.
Article
Chemistry, Multidisciplinary
Hiroshi Nagata, Junji Akimoto, Kunimitsu Kataoka
Summary: This study investigates the relationship between interface reaction and battery performance for the Si-composite electrode, as sulfide electrolytes and Si react under compositing conditions to achieve good interparticle contact.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Hiroshi Nagata, Junji Akimoto, Kunimitsu Kataoka
Summary: Polyanion-type positive electrode active materials, such as LiFePO4, are considered promising for high-safety lithium-ion batteries due to their highly stable anion structure. However, there is a demand for polyanion-based positive electrode active materials with high energy densities and good safety features. In this study, a simple and environmentally friendly method for the aqueous synthesis of Li(2)MAO(4) via an acid-base reaction is proposed. The results show that the method can effectively fabricate polyanion-type positive electrode active materials.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Physical
Tianyu Chen, Zhibin Lu, Guangjin Zeng, Yongmin Xie, Jie Xiao, Zhifeng Xu
Summary: The study introduces a high-performance LSGM electrolyte-supported tubular DC-SOFC stack for portable applications, which shows great potential in developing into high-performing, efficient, and environmentally friendly portable power sources for distributed applications.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Wenbin Tong, Yili Chen, Shijie Gong, Shaokun Zhu, Jie Tian, Jiaqian Qin, Wenyong Chen, Shuanghong Chen
Summary: In this study, a three-dimensional porous NiO interface layer with enhanced anode dynamics is fabricated, forming a Schottky contact with the zinc substrate, allowing rapid and uniform zinc plating both inside and below the interface layer. The resulting NiO@Zn exhibits exceptional stability and high capacity retention.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yafeng Bai, Kaidi Li, Liying Wang, Yang Gao, Xuesong Li, Xijia Yang, Wei Lu
Summary: In this study, a flexible zinc ion supercapacitor with gel electrolytes, porous alpha-MnO2@reduced graphene oxide cathode, and activated carbon/carbon cloth anode was developed. The device exhibits excellent electrochemical performance and stability, even at low temperatures, with a high cycle retention rate after 5000 cycles.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Anmol Jnawali, Matt D. R. Kok, Francesco Iacoviello, Daniel J. L. Brett, Paul R. Shearing
Summary: This article presents the results of a systematic study on the electrochemical performance and mechanical changes in two types of commercial batteries with different anode chemistry. The study reveals that the swelling of anode layers in batteries with silicon-based components causes deformations in the jelly roll structure, but the presence of a small percentage of silicon does not significantly impact the cycling performance of the cells within the relevant state-of-health range for electric vehicles (EVs). The research suggests that there is room for improving the cell capacities by increasing the silicon loading in composite anodes to meet the increasing demands on EVs.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yohandys A. Zulueta, My Phuong Pham-Ho, Minh Tho Nguyen
Summary: Advanced atomistic simulations were used to study ion transport in the Na- and K-doped lithium disilicate Li2Si2O5. The results showed that Na and K doping significantly enhanced Li ion diffusion and conduction in the material.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Zongying Han, Hui Dong, Yanru Yang, Hao Yu, Zhibin Yang
Summary: An efficient phase inversion-impregnation approach is developed to fabricate BaO-decorated Ni8 mol% YSZ anode-supported tubular solid oxide fuel cells (SOFCs) with anti-coking properties. BaO nanoislands are successfully introduced inside the Ni-YSZ anode, leading to higher peak power densities and improved stability in methane fuel. Density functional theory calculations suggest that the loading of BaO nanoislands facilitates carbon elimination by capturing and dissociating H2O molecules to generate OH.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Suresh Mamidi, Dan Na, Baeksang Yoon, Henu Sharma, Anil D. Pathak, Kisor Kumar Sahu, Dae Young Lee, Cheul-Ro Lee, Inseok Seo
Summary: Li-CO2 batteries, which utilize CO2 and have a high energy density, are hindered in practical applications due to slow kinetics and safety hazards. This study introduces a stable and highly conductive ceramic-based solid electrolyte and a metal-organic framework catalyst to improve the safety and performance of Li-CO2 batteries. The optimized Li-CO2 cell shows outstanding specific capacity and cycle life, and the post-cycling analysis reveals the degradation mechanism of the electrodes. First-principles calculations based on density functional theory are also performed to understand the interactions between the catalyst and the host electrode. This research demonstrates the potential of MOF cathode catalyst for stable operation in Li-CO2 batteries.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Ganghua Xiang, Zhihuan Qiu, Huilong Fei, Zhigang Liu, Shuangfeng Yin, Yuen Wu
Summary: In this study, a CeFeOx-supported Pt single atoms and subnanometric clusters catalyst was developed, which exhibits enhanced catalytic activity and stability for the preferential oxidation of CO in H2-rich stream through synergistic effect.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Dimitrios Chatzogiannakis, Marcus Fehse, Maria Angeles Cabanero, Natalia Romano, Ashley Black, Damien Saurel, M. Rosa Palacin, Montse Casas-Cabanas
Summary: By coupling electrochemical testing to operando synchrotron based X-ray absorption and powder diffraction experiments, blended positive electrodes consisting of LiMn2O4 spinel (LMO) and layered LiNi0.5Mn0.3Co0.2O2 (NMC) were studied to understand their redox mechanism. It was found that blending NMC with LMO can enhance energy density at high rates, with the blend containing 25% LMO showing the best performance. Testing with a special electrochemical setup revealed that the effective current load on each blend component can vary significantly from the nominal rate and also changes with SoC. Operando studies allowed monitoring of the oxidation state evolution and changes in crystal structure, in line with the expected behavior of individual components considering their electrochemical current loads.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Chiara Cementon, Daniel Dewar, Thrinathreddy Ramireddy, Michael Brennan, Alexey M. Glushenkov
Summary: This Perspective discusses the specific power and power density of lithium-ion capacitors, highlighting the fact that their power characteristics are often underestimated. Through analysis, it is found that lithium-ion capacitors can usually achieve power densities superior to electrochemical supercapacitors, making them excellent alternatives to supercapacitors.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Weihao Wang, Hao Yu, Li Ma, Youquan Zhang, Yuejiao Chen, Libao Chen, Guichao Kuang, Liangjun Zhou, Weifeng Wei
Summary: This study achieved an improved electrolyte with excellent low-temperature and high-voltage performance by regulating the Li+ solvation structure and highly concentrating it. The electrolyte exhibited outstanding oxidation potential and high ionic conductivity under low temperature and high voltage conditions, providing a promising approach for the practical application of high-voltage LIBs.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Martin Bures, Dan Gotz, Jiri Charvat, Milos Svoboda, Jaromir Pocedic, Juraj Kosek, Alexandr Zubov, Petr Mazur
Summary: Vanadium redox flow battery is a promising energy storage solution with long-term durability, non-flammability, and high overall efficiency. Researchers have developed a mathematical model to simulate the charge-discharge cycling of the battery, and found that hydraulic connection of electrolyte tanks is the most effective strategy to reduce capacity losses, achieving a 69% reduction.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
M. Rodriguez-Gomez, J. Campo, A. Orera, F. de La Fuente, J. Valenciano, H. Fricke, D. S. Hussey, Y. Chen, D. Yu, K. An, A. Larrea
Summary: In this study, we analysed the operando performance of industrial lead cells using neutron diffraction experiments. The experiments revealed the evolution of different phases in the positive electrode, showed significant inhomogeneity of phase distribution inside the electrode, and estimated the energy efficiency of the cells.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Jiawei Liu, Chenpeng Wang, Yue Yao, Hao Ye, Yinglong Liu, Yingli Liu, Xiaoru Xu, Zhicong Chen, Huazheng Yang, Gang Wu, Libin Lei, Chao Wang, Bo Liang
Summary: The study focuses on utilizing double conductive Ni-pads as anode collectors in micro-tubular solid oxide fuel cells. The simulation results show excellent performance and stability of DCNPs, and also highlight the potential applications in various fields.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yang Wang, Kangjie Zhou, Lang Cui, Jiabing Mei, Shengnan Li, Le Li, Wei Fan, Longsheng Zhang, Tianxi Liu
Summary: This study presents a polyimide sandwiched separator (s-PIF) for improving the cycling stability of Li-metal batteries. The s-PIF separator exhibits superior mechanical property, electrolyte adsorption/retention and ion conductivity, and enables dendrite-free Li plating/stripping process.
JOURNAL OF POWER SOURCES
(2024)
