Article
Chemistry, Multidisciplinary
Kyeong Eun Song, Sung Hun Woo, Seung Wook Baek, Hyunil Kang, Won Seok Choi, Jun Young Park, Jung Hyun Kim
Summary: In the SmBa1-xCaxCo2O5+d oxide systems, different compositions exhibited various electrical conductivity and metal-insulator transition behaviors. Among them, SBCCO-0.8 showed the highest electrical conductivity, while SBCCO-0.9 demonstrated excellent ASR characteristic at high temperature. The crystal structures of SBCCO were identified as orthorhombic, with unique X-ray diffraction peaks.
FRONTIERS IN CHEMISTRY
(2021)
Article
Materials Science, Ceramics
Zhangfa Huang, Zhijun Liu, Hua Hu, Jianxin Wang, Ming Chen, Baohua Cao, Qin Wang, Jun Yang, Wanbing Guan, Tongxiang Liang
Summary: A Co-containing composite cathode material with low thermal expansion coefficient and good compatibility has been prepared by the solid-liquid method. The cathode exhibits low polarization resistance and high power density, making it a promising material for intermediate temperature solid oxide fuel cells.
CERAMICS INTERNATIONAL
(2022)
Article
Electrochemistry
Ying Zhang, Bingbing Niu, Xiaohui Hao, Yaowen Wang, Jincheng Liu, Panpan Jiang, Tianmin He
Summary: A novel material named GBFO was synthesized and demonstrated excellent structural stability and electrochemical performance for SSOFC electrodes. The material exhibited high power densities and stability under different fuel conditions, showing potential for use in SSOFCs running on hydrocarbon fuels.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Physical
Leyu Shen, Zhihong Du, Yang Zhang, Xu Dong, Hailei Zhao
Summary: The study shows that medium-entropy perovskites Sr(FeαTiβCoγMnζ)O3-δ (SFTCM) have potential as cathode materials for IT-SOFC, with lower thermal expansion coefficients, suppressed strontium surface segregation, and more stable polarization resistance while slightly reducing catalytic activity towards oxygen reduction reaction.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Quan Yang, Dong Tian, Rui Liu, Haodong Wu, Yonghong Chen, Yanzhi Ding, Xiaoyong Lu, Bin Lin
Summary: It is found that rare-earth-abundant layered perovskite cathodes show promising performance in solid oxide fuel cells, with high electrical conductivity and excellent power density. Particularly, the NdBa0.5Sr0.5Co1.5Fe0.5O5+delta (NBSCF) cathode demonstrates advantages in surface oxygen exchange rate.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Zhenwei Wang, Haibin Sun, Jiao Li, Xue Guo, Qiangqiang Hu, Zanzhong Yang, Fangyong Yu, Guochang Li
Summary: By infiltrating ESB, the polarization resistances and activation energy of LSCF cathodes were significantly reduced, improving the oxygen reduction reaction process and enhancing the performance of intermediate-temperature solid oxide fuel cells.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Ceramics
K. P. Padmasree, Ke-Yu Lai, Arumugam Manthiram
Summary: The calcium cobaltite Ca(3-x)La(x)Co(4-y)CuyO(9+delta) doped with x and y = 0 and 0.1 showed slightly affected electrical and thermal properties, with the undoped sample exhibiting improved symmetrical cell performance in intermediate-temperature solid oxide fuel cells.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Yang Zhang, Hailei Zhao, Min Zhang, Tianrang Yang, Zhihong Du
Summary: This study proposes a high-performance symmetric electrode material, SBMTi, which exhibits excellent structural stability and catalytic activity. The doping of titanium significantly enhances the material's performance, making it a promising candidate for fuel cells.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Materials Science, Ceramics
Wendi Yi, Yaopeng Tian, Chunling Lu, Biao Wang, Yaowei Liu, Shoushan Gao, Bingbing Niu
Summary: This study presents the development of a new perovskite oxide, BCZY, as a cathode material for SOFCs. The BCZY cathode demonstrates excellent stability, good ORR activity, and superior CO2 tolerance at intermediate temperatures. The results indicate that BCZY could be a potential cathode material for IT-SOFCs.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Engineering, Multidisciplinary
Hongxia Gu, Meigui Xu, Yufei Song, Chuan Zhou, Chao Su, Wei Wang, Ran Ran, Wei Zhou, Zongping Shao
Summary: A new perovskite SrCo0.8Ti0.1Ta0.1O3-delta (SCTT) with high electrical conductivities, appropriate oxygen vacancy concentrations, and high bulk diffusion capability has been developed, showing favorable oxygen reduction reaction (ORR) activity at intermediate temperatures. The SCTT material exhibits high peak power density and durability in solid oxide fuel cells and protonic ceramic fuel cells, potentially accelerating the commercialization of IT-SOFC technology.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Chemistry, Physical
Jinpeng Wang, Zhongbiao Li, Huaikuan Zang, Yanjun Sun, Yujun Zhao, Zhihao Wang, Zhiwen Zhu, Zhaoling Wei, Qiuju Zheng
Summary: The potential of BaZr0.1Fe0.9-xNixO3-delta as a cobalt-free and low-cost cathode for protonic ceramic fuel cells (PCFCs) was investigated. The study found that the material maintains a pure cubic perovskite structure within the doping concentration range of 15 to 20% and exhibits good chemical compatibility and high oxygen conductivity.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Wanfeng Zhu, Haocong Wang, Lanlan Xu, Jianguang Yuan, Jian Gong, Xiaojuan Liu
Summary: The development of triple-conductivity durable cathode with effective oxygen reduction reaction (ORR) activity is significant for proton-conducting solid oxide fuel cell (H-SOFC) at intermediate-to-low-temperature. In this study, a Pr0.7Ba0.3Co0.8-xFe0.2NixO3-delta (x = 0, 0.1, 0.2, 0.3) cathode material with triple-conductivity was developed. Nickel doping was found to enhance the surface exchange kinetics and boost bulk charge transfer, resulting in better ORR activity and durability for H-SOFC.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Materials Science, Ceramics
Ki Sang Baek, Seung-Wook Baek, Hyunil Kang, Wonseok Choi, Jun-Young Park, Stefan Saxin, Shin Ku Lee, Jung Hyun Kim
Summary: This study reports the electrical conductivity characteristics of SmBa0.5Sr0.5Co2O5+delta (SBSCO) and finds that sintering temperature and current range have an impact on its conductivity. Higher sintering temperature and lower current range result in higher electrical conductivity.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Sea-Fue Wang, Yung-Fu Hsu, Yi-Le Liao, Shih-Ting Huang, Piotr Jasinski
Summary: The perovskite NdSrCo2O5+delta (NSCO) shows high electrical conductivity and is used as the cathode material for Ce0.8Gd0.2O2-delta (GDC)-supported microtubular solid oxide fuel cells (MT-SOFCs). By varying design parameters, the MT-SOFC with an outer tube diameter of 1.86 mm, an electrolyte thickness of 180 um, and a 5NSCO-5GDC composite cathode exhibits the best performance, with high power density and mechanical integrity. The results demonstrate the high electrochemical activity of the NSCO-GDC composite and exceed existing MT-SOFCs in terms of power density.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Caterina Sanna, Wenjing Zhang, Paola Costamagna, Peter Holtappels
Summary: The study reports the synthesis and electrochemical characterization of composite cathodes made from a mixture of LSCF and GDC nanofibers. The electrodes showed low polarization resistance at 650 degrees C, indicating promising potential for practical applications.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Electrochemistry
Chaehyun Lim, Changmin Kim, Ohhun Gwon, Hu Young Jeong, Hyun-Kon Song, Young-Wan Ju, Jeeyoung Shin, Guntae Kim
ELECTROCHIMICA ACTA
(2018)
Article
Chemistry, Multidisciplinary
Seok-Jin Kim, Javeed Mahmood, Changmin Kim, Gao-Feng Han, Seong-Wook Kim, Sun-Min Jung, Guomin Zhu, James J. De Yoreo, Guntae Kim, Jong-Beom Baek
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2018)
Article
Chemistry, Physical
Ohhun Kwon, Kyeounghak Kim, Sangwook Joo, Hu Young Jeong, Jeeyoung Shin, Jeong Woo Han, Sivaprakash Sengodan, Guntae Kim
JOURNAL OF MATERIALS CHEMISTRY A
(2018)
Article
Chemistry, Physical
Chaehyun Lim, Sivaprakash Sengodan, Donghwi Jeong, Jeeyoung Shin, Guntae Kim
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2019)
Article
Multidisciplinary Sciences
Sangwook Joo, Ohhun Kwon, Kyeounghak Kim, Seona Kim, Hyunmin Kim, Jeeyoung Shin, Hu Young Jeong, Sivaprakash Sengodan, Jeong Woo Han, Guntae Kim
NATURE COMMUNICATIONS
(2019)
Article
Chemistry, Physical
Ishfaq Ahmad, Feng Li, Changmin Kim, Jeong-Min Seo, Guntae Kim, Javeed Mahmood, Hu Young Jeong, Jong-Beom Baek
Article
Electrochemistry
Arunchander Asokan, Hansol Lee, Ohhun Gwon, Jeongwon Kim, Ohhun Kwon, Guntae Kim
Article
Electrochemistry
Yunfei Bu, Seona Kim, Ohhun Kwon, Qin Zhong, Guntae Kim
Article
Chemistry, Multidisciplinary
Jeongwon Kim, Ohhun Gwon, Ohhun Kwon, Javeed Mahmood, Changmin Kim, Yejin Yang, Hansol Lee, Jong Hoon Lee, Hu Young Jeong, Jong-Beom Baek, Guntae Kim
Review
Green & Sustainable Science & Technology
J. Kim, S. Sengodan, S. Kim, O. Kwon, Y. Bu, G. Kim
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2019)
Article
Green & Sustainable Science & Technology
Hansol Lee, Timothy Alexander Listyawan, Nokeun Park, Guntae Kim, Ikwhang Chang
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING-GREEN TECHNOLOGY
(2020)
Article
Chemistry, Physical
Junghyun Lee, Changmin Kim, KeunSu Choi, Jihyung Seo, Yunseong Choi, Wooseon Choi, Young-MM Kim, Hu Young Jeong, Jun Hee Lee, Guntae Kim, Hyesung Park
Article
Chemistry, Physical
Donggue Lee, Hansol Lee, Ohhun Gwon, Ohhun Kwon, Hu Young Jeong, Guntae Kim, Sang-Young Lee
JOURNAL OF MATERIALS CHEMISTRY A
(2019)
Article
Chemistry, Physical
Yunfei Bu, Haeseong Jang, Ohhun Gwon, Su Hwan Kim, Se Hun Joo, Gyutae Nam, Seona Kim, Yong Qin, Qin Zhong, Sang Kyu Kwak, Jaephil Cho, Guntae Kim
JOURNAL OF MATERIALS CHEMISTRY A
(2019)
Article
Multidisciplinary Sciences
Changmin Kim, Jeongwon Kim, Sangwook Joo, Yunfei Bu, Meilin Liu, Jaephil Cho, Guntae Kim
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)
