Article
Engineering, Environmental
Mobinul Islam, Muhammad Akbar, Daseul Han, Basit Ali, Yong Jeong Choi, Jaewoon Lee, Gwanghyeon Choi, Jae-Ho Park, Ji-Young Kim, Hun-Gi Jung, Kyung Yoon Chung, Duho Kim, Yong-Mook Kang, Kyung-Wan Nam
Summary: This study introduces vacancies into sodium manganese oxide cathode to oxidize manganese ion close to +4 oxidation state, overcoming the detrimental structural distortion and enabling oxygen redox reaction. The cathode with vacancies shows better cycling stability compared to the distorted pristine counterpart. Transition-metal vacancies play a critical role in triggering anionic redox reaction and manipulating phase transitions in layered cathodes.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Qin-Chao Wang, Zulipiya Shadike, Xun-Lu Li, Jian Bao, Qi-Qi Qiu, Enyuan Hu, Seong-Min Bak, Xianghui Xiao, Lu Ma, Xiao-Jing Wu, Xiao-Qing Yang, Yong-Ning Zhou
Summary: The study successfully improved the sodium ion transport and electrochemical performance by adjusting the occupancy ratio of two different sodium sites in P2 layered cathode materials. In situ X-ray absorption spectroscopy revealed charge compensation provided by Mn and Ni redox couples. Sb substitution suppressed phase transition in the high voltage region, ensuring structural stability.
ADVANCED ENERGY MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Svenja Senkale, Giannantonio Cibin, Alan Chadwick, Wolfgang Bensch
Summary: Bulk isocubanite (CuFe2S3) was synthesized and investigated as an anode material for sodium-ion batteries, showing excellent electrochemical performance. The complex reaction mechanism involves the conversion of CuFe2S3 to various crystalline and nanocrystalline phases during Na uptake, with CuxS phases playing a key role in maintaining constant specific capacity.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Liang Fang, Limin Zhou, Mihui Park, Daseul Han, Gi-Hyeok Lee, Seongkoo Kang, Suwon Lee, Mingzhe Chen, Zhe Hu, Kai Zhang, Kyung-Wan Nam, Yong-Mook Kang
Summary: This study identifies that voltage hysteresis in Li-rich layered oxide, Li1.2Ni0.4Mn0.4O2, is highly correlated to cationic reduction during discharge. The incomplete reduction of Ni during discharge is found to be associated with hysteresis. This suggests that oxygen redox is not the sole reason for the evolution of voltage hysteresis.
Article
Nanoscience & Nanotechnology
Tomooki Hosaka, Ayumi Noda, Kei Kubota, Kento Chiguchi, Yuki Matsuda, Kazuhiko Ida, Satoshi Yasuno, Shinichi Komaba
Summary: Superconcentrated aqueous electrolytes have been developed for 2 V-class aqueous batteries. By controlling the composition of the electrolyte, a wider potential window and good charge/discharge performance has been achieved. Two different battery configurations showed excellent performance using the electrolyte. The study proposes new sodium/potassium-ion batteries using the superconcentrated NaFSA-KFSA aqueous electrolytes.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Haolv Hu, Hung-Chieh He, Rue-Kun Xie, Chen Cheng, Tianran Yan, Chi Chen, Dan Sun, Ting-Shan Chan, Jinpeng Wu, Liang Zhang
Summary: In this study, we successfully introduced reversible Mn2+/Mn4+ double redox couple into P2-type Na0.6Mg0.3Mn0.7O2 cathode with suppressed Jahn-Teller (J-T) effect through F anion doping strategy. The introduction of F anions enlarged the interlayer spacing, reduced the band gap, improved charge transfer kinetics, suppressed Mn2+ dissolution, promoted reversible conversion, enhanced oxygen redox reaction, and ultimately enhanced the electrochemical performance.
Article
Chemistry, Multidisciplinary
Na Jiang, Qiunan Liu, Jiawei Wang, Wanfeng Yang, Wensheng Ma, Liqiang Zhang, Zhangquan Peng, Zhonghua Zhang
Summary: The P2/P3-Na0.67Mn0.64Co0.30Al0.06O2 cathode with tunable biphase structures shows excellent rate capability and cycling stability for sodium-ion batteries, attributed to stable crystal structures and fast Na+ diffusion. The study highlights the importance of precisely tailoring phase composition in designing advanced cathode materials.
Article
Chemistry, Physical
Andreas Siebert, Xinwei Dou, Raul Garcia-Diez, Daniel Buchholz, Roberto Felix, Evelyn Handick, Giorgia Greco, Ivana Hasa, Regan G. Wilks, Stefano Passerini, Marcus Baer
Summary: This study utilizes operando X-ray absorption near-edge structure spectroscopy (XANES) to investigate the sodium insertion and extraction process in anatase TiO2 nanoparticles, revealing the reversible and irreversible sodium insertion as well as the change in titanium coordination. These results provide crucial insights for a more comprehensive understanding of the sodiation mechanism of TiO2-based anodes under realistic operating conditions.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Jonas van Dinter, Sylvio Indris, Alexander Bitter, David Grantz, Giannantonio Cibin, Martin Etter, Wolfgang Bensch
Summary: The layered compound CrPS4 shows exceptional reversible long-term capacity and capacity retention as an anode material in sodium-ion batteries, with investigations revealing a complex reaction pathway and detailed evaluation suggesting a change in the electrochemical reaction upon cycling. Further research into the reaction mechanism of the first cycle using complementary techniques indicates unexpected complexity in the reaction pathway.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Review
Chemistry, Physical
Xin Wang, Hu Zhou, Zongha Chen, Xiangbo Meng
Summary: NMC cathode materials offer higher capacity and lower cost, yet face challenges that require exploring mechanisms using in situ and operando X-ray techniques for rational design guidance. XRD and XAS techniques play a crucial role in battery development.
ENERGY STORAGE MATERIALS
(2022)
Article
Engineering, Environmental
Zhengbo Liu, Chaojin Zhou, Jun Liu, Lichun Yang, Jiangwen Liu, Min Zhu
Summary: Element doping is a common method for improving the performance of cathode materials in batteries. This study successfully transformed an O3-type cathode into a P2-type cathode using a simple Li/F co-doping route. The modified P2-type cathode showed higher Na content, solid solution reaction in a high-voltage range, and a stronger TM-F bond. This research provides a new idea and reference for synthesizing high-performance P2-type layered oxide cathode materials for sodium-ion batteries.
CHEMICAL ENGINEERING JOURNAL
(2022)
Review
Chemistry, Multidisciplinary
Yu-Xin Chang, Lianzheng Yu, Xuanxuan Xing, Yu-Jie Guo, Zhi-Yu Xie, Sailong Xu
Summary: This review summarizes the progress and mechanism of ion-substituted Mn-based oxides, establishes a composition-crystal structure-electrochemical performance relationship, and offers perspectives for guiding the design of high-performance Mn-based oxides for SIBs.
Article
Chemistry, Applied
Dong Zhou, De Ning, Jun Wang, Jiahua Liu, Gaoyuan Zhang, Yinguo Xiao, Jiaxin Zheng, Yongli Li, Jie Li, Xinzhi Liu
Summary: The O3-type NaFe0.5Mn0.5O2 layered oxide is a promising cathode for sodium ion batteries due to its low cost and high energy density. However, its structural stability and cycle life need improvement. In this study, the phase evolution and charge compensation mechanism of the cathode were investigated, revealing a phase transition and the formation of an inert ramsdellite phase during the sodiation/desodiation process. The study also highlighted the importance of suppressing Fe migration in the design of high energy O3-type cathodes for sodium ion batteries.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Lisa Djuandhi, Vaibhav Gaikwad, Bruce C. C. Cowie, Veena Sahajwalla, Neeraj Sharma
Summary: This study investigates the use of waste rubber tires to generate electrode components and the influence of treatment factors on electrochemical performance. Results show that higher pyrolyzation temperatures lead to increased graphitic character in carbon materials, with different priorities and performance observed in different cell systems using the pyrolyzed rubber tires.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Physical
Ding-Ren Shi, Zulipiya Shadike, Tian Wang, Si-Yu Yang, He-Yi Xia, Yu-Ke Wang, Ji-Li Yue, Enyuan Hu, Seong-Min Bak, Xin-Yang Yue, Yong-Ning Zhou, Lu Ma, Sanjit Ghose, Tianpin Wu, Qing-Hua Zhang, Zhe Xing, Yan-Ning Zhang, Lei Zheng, Lin Gu, Xiao-Qing Yang, Zheng-Wen Fu
Summary: This paper introduces a new layered chalcogenide, NaCrSSe, based on dual anionic-redox reaction, which exhibits high capacity and fast kinetics. The material shows low polarization and high energy efficiencies of around 92%, with a superior high-rate charge capacity even at 4000 mA g(-1).
JOURNAL OF POWER SOURCES
(2021)
Article
Physics, Applied
Hideharu Niwa, Kazuyuki Higashiyama, Kaoru Amaha, Wataru Kobayashi, Kenji Ishii, Yutaka Moritomo
APPLIED PHYSICS EXPRESS
(2019)
Article
Chemistry, Physical
Kosuke Yamazoe, Jun Miyawaki, Hideharu Niwa, Anders Nilsson, Yoshihisa Harada
JOURNAL OF CHEMICAL PHYSICS
(2019)
Article
Physics, Multidisciplinary
Dai Inoue, Hideharu Niwa, Hiroaki Nitani, Yutaka Moritomo
Summary: The study revealed significant variability in the temperature coefficient of the redox potential among 16 organic solvents, with a proportional relation to solvent viscosity. This relationship can be explained by the configuration entropy of the solvent molecules.
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
(2021)
Article
Physics, Applied
Yutaka Moritomo, Hiroki Tachihara, Hiroki Iwaizumi, Takayuki Shibata, Hideharu Niwa
Summary: In this study, we systematically investigated thin films of NaxCo[Fe(CN)(6)](0.82) and observed first-order phase transition triggered by cooperative charge transfer (CT) within a certain range. The extended CT model reproduced the experimentally observed behaviors well, except for some anomalies in the high-x region.
JAPANESE JOURNAL OF APPLIED PHYSICS
(2021)
Article
Physics, Multidisciplinary
Dai Inoue, Toshiki Komatsu, Hideharu Niwa, Toshiaki Ina, Hiroaki Nitani, Hitoshi Abe, Yutaka Moritomo
Summary: In this study, the coordination states of Fe2+ and Fe3+ in organic solvents were investigated using spectroscopic techniques. The results showed that Fe3+ formed [FeCl4](-) complex in all the solutions, while Fe2+ formed different coordination structures in different solvents.
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
(2022)
Article
Chemistry, Physical
Daisuke Asakura, Yusuke Nanba, Hideharu Niwa, Hisao Kiuchi, Jun Miyawaki, Masashi Okubo, Hirofumi Matsuda, Yoshihisa Harada, Eiji Hosono
Summary: The Mn 3d electronic structure change of the LiMn2O4 cathode during Li-ion extraction/insertion in an aqueous electrolyte solution was studied using operando resonant soft X-ray emission spectroscopy. The results showed that the degree of charge transfer varied significantly between the Mn3+ and Mn4+ states, indicating that the redox reaction occurs on the strongly-hybridized Mn 3d-O 2p orbital rather than the localized Mn 3d orbital.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
Daisuke Asakura, Yusuke Nanba, Masashi Okubo, Hideharu Niwa, Hisao Kiuchi, Jun Miyawaki, Masaharu Oshima, Eiji Hosono, Yoshihisa Harada
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2019)
Article
Chemistry, Physical
Daisuke Asakura, Yusuke Nanba, Eiji Hosono, Masashi Okubo, Hideharu Niwa, Hisao Kiuchi, Jun Miyawaki, Yoshihisa Harada
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2019)
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)