Article
Chemistry, Physical
Xiaoqiong Du, Yao Gao, Zhen Hou, Xuyun Guo, Ye Zhu, Biao Zhang
Summary: This study investigates the stable cycling mechanism of ether-based electrolytes and reveals that the formation of thin yet strong solid electrolyte interphases (SEIs) improve the stability and rate capability of alloy anodes.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Multidisciplinary Sciences
Xing Shen, Quan Zhou, Miao Han, Xingguo Qi, Bo Li, Qiangqiang Zhang, Junmei Zhao, Chao Yang, Huizhou Liu, Yong-Sheng Hu
Summary: By employing a solvent-free mechanochemical protocol, sodium vanadium fluorophosphates have been successfully synthesized with improved electrochemical performance, demonstrating promise for industrial application in sodium-ion batteries.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Qiuyang Ma, Qiqi Liu, Zhongyuan Li, Jun Pu, Jawayria Mujtaba, Zhen Fang
Summary: This study presents GeOx/NC composites as sulfur hosts for room-temperature sodium-sulfur batteries. Experimental and theoretical studies demonstrate that the introduction of oxygen vacancies can effectively immobilize polysulfides and accelerate the redox kinetics. The micro-and mesoporous structure of the composites helps alleviate the expansion of sulfur during the charging/discharging process. This research provides a new approach for the rational design of metal oxides and promotes the application of room-temperature sodium-sulfur batteries.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Energy & Fuels
Young-Han Lee, In-Su Hwang, Jeong-Hee Choi, Cheol-Min Park
Summary: The electrochemical Li/Na/K-ion reaction pathways in Ga for high-performance Ga anodes in alkali-ion batteries are thoroughly elucidated using ex situ analytical tools. Ga exhibits a high Li-ion storage reaction, forming Li2Ga, but poor Na- and K-ion storage reactions, forming NaGa4 and K3Ga13, respectively. An amorphous Ga composite (Ga/C) is fabricated, showing high reversible capacity, long-term Li-ion storage stability, and high rate capability. Three-step confinement of amorphous Ga in the composite during cycling is demonstrated as an enhancement mechanism for high-performance Ga/C anodes for LIBs.
JOURNAL OF ENERGY STORAGE
(2023)
Review
Chemistry, Multidisciplinary
Fei Xie, Zhen Xu, Zhenyu Guo, Yaxiang Lu, Liquan Chen, Maria-Magdalena Titirici, Yong-Sheng Hu
Summary: Na-ion batteries are gaining attention as an alternative to lead-acid batteries and a supplement to Li-ion batteries due to abundant Na resources and cost-effectiveness. Disordered carbons are considered the most promising anode candidates for NIBs, but challenges and remaining problems in design and understanding still need to be addressed.
SCIENCE CHINA-CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Young-Hoon Kim, Jae-Hyun An, Sung-Yeob Kim, Xiangmei Li, Eun-Ji Song, Jae-Ho Park, Kyung Yoon Chung, Yong-Seok Choi, David O. Scanlon, Hyo-Jun Ahn, Jae-Chul Lee
Summary: A rational strategy is reported to design bulk Bi anodes for Na-ion batteries that feature ultrafast charging, long cyclability, and large energy storage. The bulk Bi particles gradually transform into a porous nanostructure during cycling, allowing for high Na diffusivity and unprecedented electrochemical properties. This study provides basic guidelines for developing battery anodes that simultaneously exhibit high capacities, fast kinetics, and long cycling stabilities.
ADVANCED MATERIALS
(2022)
Article
Engineering, Environmental
Seongjoon So, Jaewook Ko, Yong Nam Ahn, Il Tae Kim, Jaehyun Hur
Summary: The introduction of TiO2-C matrix can improve the electrochemical performance of In2Te3-based active materials by enhancing Li-ion diffusion dynamics, reducing internal resistance, and volume change.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Peiyuan Ma, Priyadarshini Mirmira, Peter J. Eng, Seoung-Bum Son, Ira D. Bloom, Alexander S. Filatov, Chibueze Amanchukwu
Summary: The research demonstrates that using fluoroethers as electrolyte solvents can support reversible lithium-ion intercalation into graphite without solvent co-intercalation, providing higher energy density and a wider working temperature window for next-generation lithium-ion batteries.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Long-Long Ren, Lin-Hui Wang, Yu-Feng Qin, Qiang Li
Summary: Amorphous cobalt sulfide electrodes prepared by solvothermal synthesis exhibited superior electrochemical performance, including high capacity, good cycle stability, and rate capability. The unique characteristics of amorphous nanostructures, such as more defects, isotropic nature, and absence of grain boundaries, contribute to the outstanding electrochemical performance.
FRONTIERS IN CHEMISTRY
(2022)
Article
Polymer Science
Orynbassar Mukhan, Ji-Su Yun, Eun Kyung Kim, Sang-Gu Ji, Nurzhan Umirov, Byoung-Min Lee, Chang-Uk Jeong, Sung-Soo Kim, Jae-Hak Choi
Summary: This study evaluates the electrochemical performance of Si alloy-based anodes with poly (ether imide) (PEI) binder after thermal treatment at various temperatures. The results show that thermal treatment at above 500 degrees C partially carbonizes the PEI binder and significantly enhances electrochemical performance such as cycle life and high rate capabilities. The partially carbonized PEI acts as a binder and conductive additive, maintaining good electrical contacts between active materials, electronic conductors, and current collector during cycling. This partial carbonization strategy offers a new approach for developing next-generation high-capacity batteries.
Article
Electrochemistry
Saul Said Montiel Guerrero, Yasin Emre Durmus, Krzysztof Dzieciol, Shibabrata Basak, Hermann Tempel, Stefan van Waasen, Hans Kungl, Rudiger-A. Eichel
Summary: The performance of Zn-air batteries can be enhanced by adding EDTA electrolyte additive, which results in higher discharge voltages and energies, lower overpotentials, and increased cycle life.
BATTERIES & SUPERCAPS
(2021)
Article
Electrochemistry
Ting Liu, Li Li, Tianhao Yao, Yanni Li, Lei Zhu, Fang Li, Xiaogang Han, Yonghong Cheng, Hongkang Wang
Summary: A hybrid material of amorphous vanadium oxide uniformly embedded into highly defective carbon nanofibers (VOx@CNFs) was fabricated and demonstrated excellent alkaline ion storage performances. It provides abundant active sites for ion storage, multiple channels for ion diffusion, and can accommodate structural changes effectively.
ELECTROCHIMICA ACTA
(2021)
Article
Thermodynamics
Mikolaj Nowak, Wojciech Zajac, Janina Molenda
Summary: In this study, the electrochemical performance of NaFeTiO4, Na0.9Fe0.9Ti1.1O4, and Na0.8Fe0.8Ti1.1O4 tunneled structured anodes for Na-ion batteries was investigated. The sol-gel synthesis method was employed to obtain anode materials with improved morphology, resulting in enhanced electrochemical behavior in Na-ion batteries. Impedance spectroscopy and UV-VIS measurements showed that the electronic component dominated the total electrical conductivity, which was one order of magnitude higher for Na0.9Fe0.9Ti1.1O4 and Na0.9Fe0.9Ti1.1O4 compared to NaFeTiO4. Among the studied materials, Na0.9Fe0.9Ti1.1O4 exhibited the highest charge capacity of 180 mAh g(-1) during the first cycle at C/20 and retained 80% of the initial capacity after 30 cycles with an average charging voltage of 1.3 V vs. Na+/Na. Experimental results at temperatures ranging from -20 degrees C to +60 degrees C showed that Na0.9Fe0.9Ti1.1O4 maintained a significant portion of its capacity, with 70 mAh g(-1) at -20 degrees C and 177 mAh g(-1) at 60 degrees C. The use of ether-based diglyme solvents instead of ester-based solvents reduced irreversible reactions during the initial discharge-charge cycle, improved performance under higher loads, and decreased charge transfer and solid electrolyte interface resistance. These findings demonstrate that Na0.9Fe0.9Ti1.1O4 is a promising material for future low-cost Na-ion batteries with stable performance over a wide temperature range.
Article
Chemistry, Physical
Lei Chai, Xingyu Wang, Chuangji Bi, Ben Su, Chao Zhang, Xiaogan Li, Wendong Xue
Summary: Silicon has great potential as an anode material for lithium-ion batteries due to its high capacity and low voltage. However, previous research has not fully addressed the issues with silicon-based anodes, limiting their commercial applications. Further scientific investigation is needed to understand the lithiation/delithiation process in silicon materials and how electrode potential and charge state affect the kinetic process. This understanding will help improve the performance of silicon materials.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Ruiqi Dong, Lumin Zheng, Ying Bai, Qiao Ni, Yu Li, Feng Wu, Haixia Ren, Chuan Wu
Summary: The sodium storage performance of hard carbon in ether electrolytes is superior, attributed to a unique solvated Na+ and Na+ co-intercalation mechanism in designed monodispersed HC nanospheres. Additionally, a thin solid electrolyte interphase film formed in ether electrolytes facilitates Na+ transportation and results in a high initial Coulombic efficiency.
ADVANCED MATERIALS
(2021)
Article
Physics, Applied
Tetsuya Kajita, Takayuki Kawamata, Takashi Noji, Takehiro Hatakeda, Masatsune Kato, Yoji Koike, Takashi Itoh
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
(2015)
Article
Electrochemistry
Tetsuya Kajita, Takashi Itoh
ELECTROCHIMICA ACTA
(2016)
Article
Chemistry, Multidisciplinary
Mukkannan Azhagurajan, Tetsuya Kajita, Takashi Itoh, Youn-Geun Kim, Kingo Itaya
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2016)
Article
Electrochemistry
Tetsuya Kajita, Takashi Itoh
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2016)
Article
Electrochemistry
Mukkannan Azhagurajan, Akiyoshi Nakata, Hajime Arai, Zempachi Ogumi, Tetsuya Kajita, Takashi Itoh, Kingo Itaya
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2017)
Article
Chemistry, Physical
Tetsuya Kajita, Takashi Itoh
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2018)
Article
Electrochemistry
Takashi Itoh, Tetsuya Kajita, Toshiteru Maeda, Atsuo Kasuya
Article
Electrochemistry
Tetsuya Kajita, Ryota Yuge, Kentaro Nakahara, Jiro Iriyama, Hiroo Takahashi, Ryuich Kasahara, Tatsuji Numata, Shin Serizawa, Koji Utsugi
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2013)
Article
Electrochemistry
Tetsuya Kajita, Ryota Yuge, Kentaro Nakahara, Jiro Iriyama, Hiroo Takahashi, Ryuich Kasahara, Tatsuji Nurnata, Shin Serizawa, Koji Utsugi
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2014)
Article
Materials Science, Multidisciplinary
Masatsune Kato, Yoshinori Imai, Tetsuya Kajita, Yuichiro Takarabe, Takefumi Minakawa, Ken-ichi Nemoto, Hiroto Tezuka, Takashi Noji, Yoji Koike
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2008)
Article
Physics, Applied
H. Tezuka, M. Kato, T. Kajita, T. Noji, Y. Koike
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
(2008)
Article
Chemistry, Multidisciplinary
T. Kajita, T. Itoh
Article
Physics, Applied
M. Kato, T. Kajita, R. Hanakago, Y. Koike
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
(2006)
Article
Electrochemistry
Tetsuya Kajita, Takashi Noji, Yoshinori Imai, Takayuki Kawamata, Masatsune Kato, Yoji Koike
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2018)
Article
Chemistry, Physical
Sergey Yu. Ketkov, Sheng-Yuan Tzeng, Elena A. Rychagova, Anton N. Lukoyanov, Wen-Bih Tzeng
Summary: Metallocenes, including methylcobaltocene, play important roles in various fields of chemistry. The ionization energy and vibrational structure of (Cp ')(Cp)Co can be influenced by introducing methyl substituents. The mass-analyzed threshold ionization spectrum and DFT calculations provide accurate information about the properties and transformations of (Cp ')(Cp)Co.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Review
Chemistry, Physical
Qifeng Mu, Jian Hu
Summary: Polymer mechanochemistry has experienced a renaissance due to the rapid development of mechanophores and principles governing mechanochemical transduction or material strengthening. It has not only provided fundamental guidelines for converting mechanical energy into chemical output, but also found applications in engineering and smart devices.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Da Hye Yang, Francesco Ricci, Fredrik L. Nordstrom, Na Li
Summary: Through systematic evaluation of the oiling-out behavior of procaine, we identified both stable and metastable liquid-liquid phase separation, and established phase diagrams to assist in rational selection of crystallization strategies.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Vikki Anand Varma, Simmie Jaglan, Mohd Yasir Khan, Sujin B. Babu
Summary: Designing engineering structures like nanocages, shells, and containers through self-assembly of colloids is a challenging problem. This work proposes a simple model for the subunit, which leads to the formation of monodispersed spherical cages or containers. The model with only one control parameter can be used to design cages with the desired radius.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Hainan Jiang, Yaolong He, Xiaolin Li, Zhiyao Jin, Huijie Yu, Dawei Li
Summary: The cycling lifespan and coulombic efficiency of lithium-ion batteries are crucial for high C-rate applications. The Li-ion concentration plays a crucial role in determining the mechanical integrity and structural stability of electrodes. This study focuses on graphite as the working electrode and establishes an experimental system to investigate the mechanical properties of composite graphite electrode at different C-rates. Considering the effect of Li-ion concentration in stress analysis is found to be significant.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Zhiye Wang, Yunchuan Li, Mingjun Sun
Summary: This study investigates the influence of intramolecular pi-pi interactions on the electronic transport capabilities of molecules. By designing and analyzing three pi-conjugated molecules, the researchers observe that different pi-conjugated structures have varying effects on electron transport. The findings provide a theoretical foundation for designing single-molecule electronic devices with multiple electron channels based on intramolecular pi-pi interactions.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Yuandong Xu, Haoyang Feng, Chaoyang Dong, Yuqing Yang, Meng Zhou, Yajun Wei, Hui Guo, Yaqing Wei, Jishan Su, Yingying Ben, Xia Zhang
Summary: Hollow MoS2 cubes and spheres were successfully synthesized using a one-step hydrothermal method with the hard template method. The hollow MoS2 cubes exhibited higher specific capacitance and energy density compared to the hollow MoS2 spheres. The symmetrical supercapacitors assembled with these hollow structures showed good performance and high capacity retention after multiple cycles. These findings suggest that controlling the pore structure and surface characteristics of MoS2 is crucial for enhancing its electrochemical properties.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Ainhoa Oliden-Sanchez, Rebeca Sola-Llano, Joaquin Perez-Pariente, Luis Gomez-Hortiguela, Virginia Martinez-Martinez
Summary: The combination of photoactive molecules and inorganic structures is important for the development of advanced materials in optics. In this study, bulky dyes were successfully encapsulated in a zeolitic framework, resulting in emission throughout the visible spectrum.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Miaomiao Zhang, Cunyuan Pei, Qiqi Xiang, Lintao Liu, Zhongxu Dai, Huijuan Ma, Shibing Ni
Summary: The design of a solid electrolyte interphase (SEI) plays a crucial role in improving the electrochemical performance of anode materials. In this study, lithium difluoro(oxalate)borate (LiDFOB) is used as an electrolyte additive to form a protective SEI film on Li3VO4 (LVO) anodes. The addition of LiDFOB results in a dense, uniform, stable, and LiF-richer SEI, which enhances the Li-ion storage kinetics. The generated SEI also prevents further decomposition of the electrolyte and maintains the morphology of LVO anodes during charge/discharge processes. This work demonstrates the effectiveness of LiDFOB as a multi-functional additive for LiPF6 electrolytes and provides insights into SEI construction for high-performance LVO anodes.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
B. V. Andryushechkin, T. V. Pavlova, V. M. Shevlyuga
Summary: The atomic structure of the Ag(111)-p(4 x 4)-O phase was reexamined and two phases with the same periodicity were discovered. It was demonstrated that the accepted Ag6 model is incompatible with high-resolution oxygen-sensitive STM images.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
S. L. Romo-Avila, D. Marquez-Ruiz, R. A. Guirado-Lopez
Summary: In this study, we used density functional theory (DFT) calculations to investigate the interaction between model graphene oxide (GO) nanostructures and chlorine monoxide ClO. We aimed to understand the role of this highly oxidizing species in breaking C-C bonds and forming significant holes on GO sheets. Our results showed that C-C bonds in a single graphene oxide sheet can be broken through a simple mechanism involving the dissociation of two chemically attached ClO molecules. The formation of carbonyl groups and holes on the GO surface was also observed. This study provides important insights into the degradation of carbon nanotubes and the stability of GO during the myeloperoxidase (MPO) catalytic cycle.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Alberto Garcia-Fernandez, Birgit Kammlander, Stefania Riva, Hakan Rensmo, Ute B. Cappel
Summary: In this study, the X-ray stability of five different lead halide perovskite compositions (MAPbI3, MAPbCl3, MAPbBr3, FAPbBr3, CsPbBr3) was investigated using photoelectron spectroscopy. Different degradation mechanisms and resistance to X-ray were observed depending on the crystal composition. Overall, perovskite compositions based on the MA+ cation were found to be less stable than those based on FA+ or Cs+. Metallic lead formation was most easily observed in the chloride perovskite, followed by bromide, and very little in MAPbI3. Multiple degradation processes were identified for the bromide compositions, including ion migration, formation of volatile and solid products, as well as metallic lead. CsBr was formed as a solid degradation product on the surface of CsPbBr3.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Timofei Rostilov, Vadim Ziborov, Alexander Dolgoborodov, Mikhail Kuskov
Summary: The shock-loading behavior of nanomaterials is investigated in this study. It is found that shock compaction waves exhibit a distinct two-step structure, with the formation of faster precursor waves that travel ahead of the main compaction waves. The complexity of the shock Hugoniot curve of the tested nanomaterial is described, and the effect of initial porosity on the compressed states is demonstrated.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Sergey S. Nikitin, Alexander D. Koryakov, Elizaveta A. Antipinskaya, Alexey A. Markov, Mikhail V. Patrakeev
Summary: The stability of La1/3Sr2/3Fe1-xMnxO3-delta, a perovskite-type oxide, under reducing conditions is dependent on the manganese content. Increasing the manganese content leads to a decrease in stability. The behavior of iron and manganese in the oxide shows distinct differences, which can be attributed to the difference in the enthalpy of oxidation reactions. Additionally, the change in the La/Sr ratio affects the concentration of iron and manganese ions.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Mosayeb Naseri, Shirin Amirian, Mehrdad Faraji, Mohammad Abdur Rashid, Maicon Pierre Lourenco, Venkataraman Thangadurai, D. R. Salahub
Summary: Inspired by the successful transfer of freestanding ultrathin films of SrTiO3 and BiFeO3, this study assessed the structural stability and investigated the electronic, optical, and thermoelectric properties of a group of two-dimensional perovskite-type materials called perovskenes. The findings revealed that these materials are wide bandgap semiconductors with potential application in UV shielding. Moreover, they exhibit better electrical and thermal conductivity at high temperatures, enabling efficient power generation in thermoelectric devices.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)