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
Construction & Building Technology
Mariana O. G. P. Braganca, Nicole P. Hasparyk, Jeferson L. Bronholo, Anelize Seniski Silva, Kleber F. Portella, Selmo C. Kuperman
Summary: This study proposes a non-destructive methodology to monitor the formation of products from expansive and deleterious reactions in concrete structures. The combination of various testing methods can effectively evaluate the signs of issues before they visually appear.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Tithi Sen, Amrita Biswas, Rajalingam Thangavel, Udayabhanu Gopalakrishnan Nair, Tapan Kumar Rout
Summary: The study analyzed the impact of a lower concentration of Fe3+ ions on the properties of FexNi1-xO thin films and compared it with higher Fe3+ ion concentration. Structural analysis using X-ray diffraction showed higher degradation of the crystal lattice even with a small amount of Fe3+ substitution. Optical properties were studied using UV-visible absorption spectra and Raman spectra, showing that both unsubstituted and Fe substituted NiO ITO thin films exhibited photoluminescence properties. Electrochemical impedance spectroscopy revealed that lower molar concentration of Fe3+ ions resulted in better electrochemical performance. This finding was further supported by current-voltage and cyclic-voltammetry studies.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Nanoscience & Nanotechnology
Ruiyun Huang, Connor G. Carr, Chirranjeevi Balaji Gopal, Sossina M. Haile
Summary: In this study, a general electrochemical method for determining nonstoichiometry in thin film MIECs was demonstrated via measurement of the chemical capacitance. Impedance spectra measurements were conducted on ceria and ceria-zirconia materials under different oxygen partial pressures and temperatures. The results showed that nonstoichiometry values can be accurately determined from the chemical capacitance.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Zengsheng Liu, Lingjun Li, Jie Chen, Huiping Yang, Lingfeng Xia, Jiaxin Chen, Junfei Duan, Zhaoyong Chen
Summary: The synthesis of layered cathode material for sodium ion batteries using sol-gel method is hindered by unclear selection criteria for complexing agents. In this study, Na0.9Ni0.45Mn0.55O2 cathode is successfully prepared using different chelating agents, with citric acid showing the best electrochemical performance. The XRD and HRTEM analysis confirm that the optimized sample maintains better phase and interfacial stability, making it significant for understanding the selection criteria for cathode chelators in sodium-ion batteries synthesis.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Bin Shen, Xing Xu, Wanmin Liu, Mulan Qin, Weigang Wang
Summary: Surface modification of LiCoO2 with the lithium ionic conductor LiAlSiO4 enhances its electrochemical performance at a high cutoff voltage of 4.55 V, resulting in higher reversible specific capacity and excellent rate capability. This improvement is attributed to the effective stabilization of the surface and bulk structure by LiAlSiO4 coating, making it a promising strategy to enhance the electrochemical performance of high-voltage LiCoO2.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
S. U. Costilla-Aguilar, M. Pech-Canul, M. J. Escudero, R. F. Cienfuegos-Pelaes, J. A. Aguilar-Martinez
Summary: The study investigated the effect of complexing agent/transition metal ratio on GDC powders, revealing that higher temperatures and R ratios led to larger grain sizes, with GDC-R1 showing a larger specific surface area. The GDC-R1 sample sintered at lower temperatures exhibited the lowest average grain size and the highest ionic conductivity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Semih Engun, Kamil Burak Dermenci, Umut Savaci, Cemal Can Erdogan, Servet Turan
Summary: The LiNi0.5Mn0.3Co0.2O2 (NMC532) cathode surface was coated with LLZO using the citric acid-aided sol-gel technique. A thin coating layer was obtained and the formation of LaMO3 was observed during high-temperature annealing. The electrochemical performance of the coated samples was improved, with higher capacity retention and lower interface resistance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Ceramics
Hari Narayanan Vasavan, Manish Badole, Sushmita Dwivedi, Sunil Kumar
Summary: This work investigates the structural, electrical, and electrochemical properties of P2-type Na0.70Ni0.20Cu0.15Mn0.65O2 as a cathode material for Na-ion batteries. The study confirms the formation of a single P2-type phase and the dominant conduction mechanism of Na-ions. The material exhibits good cyclability and high specific capacity, making it a promising candidate for Na-ion battery applications.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Yulei Sui, Yueying Hao, Xiaoping Zhang, Jiangpeng Li, Gongyu Wen, Shengkui Zhong, Ziwei Zhang, Ling Wu
Summary: This study successfully synthesized V-substituted Na0.67Fe0.5Mn0.5O2 cathode material with improved electrochemical performance, and investigated the effects of V-substitution on its chemical composition, crystal structure and morphology, as well as the modification mechanisms on the enhanced electrochemical properties. The results showed that introducing V ions into the lattice of Na0.67Fe0.5Mn0.5O2 crystals significantly improved its rate capability and cycle stability, mainly due to the enhanced Na+ diffusion rate and structural reversibility.
CERAMICS INTERNATIONAL
(2021)
Article
Electrochemistry
K. A. Yasakau, M. Starykevich, M. G. S. Ferreira, M. L. Zheludkevich
Summary: Proper assignment of time constants is crucial for interpreting impedance spectra accurately. Hierarchical models with R-C elements were used to describe the properties of sol-gel coatings, aluminium oxide layers, and corrosion processes in coated aluminium samples. The results provided valuable insights into the adhesion behavior of sol-gel coatings and proposed a degradation model for anodized aluminium.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Inorganic & Nuclear
Guoliang Bai, Wei Wei, Benqiu Wang, Chunhua Wang, Na Liu, Jihu Jiang, Pengpeng Li
Summary: Monoclinic Li1+xV3O8 cathode materials synthesized by sol-gel method exhibit good electrochemical properties, including high initial discharge/charge specific capacities and cycle performance under 50 mA g(-1) current, along with good rate performance.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
Article
Electrochemistry
Caterina Sanna, Enrico Squizzato, Paola Costamagna, Peter Holtappels, Antonella Glisenti
Summary: This study investigates the application of La0.6Sr0.4MnO3 (LSM) as an anode in direct methane intermediate temperature solid oxide fuel cells (IT-SOFCs). Composite electrodes with different configurations are prepared and tested in air and direct methane conditions. It is found that LSM exhibits reversible modification of the crystal structure in methane, and the presence of CGO in the composite electrode contributes to its stability in reducing conditions.
ELECTROCHIMICA ACTA
(2022)
Article
Materials Science, Multidisciplinary
K. S. Duran, C. A. Hernandez-Barrios, A. E. Coy, F. Viejo
Summary: Fluoride-based pretreatment of the WE54 magnesium alloy can improve the corrosion resistance of the sol-gel coatings and alloy, but long pretreatment times may lead to structural defects that accelerate corrosive attack in saline environments.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Metallurgy & Metallurgical Engineering
K. S. Duran, N. Hernandez, L. M. Rueda, C. A. Hernandez-Barrios, A. E. Coy, F. Viejo
Summary: This study developed multilayer barrier-bioactive coatings to enhance the corrosion resistance of magnesium alloy and promote the growth of apatite-like phases. However, an increase in salt content led to the formation of porous coatings, affecting the corrosion resistance of magnesium alloy.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Physics, Multidisciplinary
Namrata I. Jain, Shyamsunder S. Bhoga
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS
(2015)
Article
Chemistry, Physical
A. P. Khandale, M. G. Bansod, S. S. Bhoga
SOLID STATE IONICS
(2015)
Correction
Chemistry, Physical
Namrata Jain, Shyamsunder S. Bhoga, Gowardhan S. Khadekar
ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES
(2015)
Article
Chemistry, Physical
M. Bansod, A. P. Khandale, S. S. Bhoga
Article
Chemistry, Physical
V. N. Chaudhari, A. P. Khandale, S. S. Bhoga
Article
Chemistry, Physical
M. B. Bansod, A. P. Khandale, R. V. Kumar, S. S. Bhoga
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2018)
Article
Chemistry, Physical
A. P. Khandale, R. P. Lajurkar, S. S. Bhoga
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2014)
Article
Chemistry, Physical
A. P. Khandale, S. S. Bhoga
SOLID STATE IONICS
(2014)
Article
Chemistry, Physical
A. P. Khandale, B. S. Pahune, S. S. Bhoga, R. V. Kumar, R. Tomov
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2019)
Article
Chemistry, Physical
A. P. Khandale, S. S. Bhoga
Summary: The dispersion of nanocrystalline Ce0.9Gd0.1O2-delta in superfine Sm1.5Sr0.5NiO4+delta is achieved using a modified precipitation technique, inhibiting grain growth and providing morphological stability. The concentration-dependent behaviors of ionic conductivity, surface exchange rate, and electrode polarization resistance are comprehended using a percolation model. Improvement in electrochemical performance is correlated to the nano crystallite size of Ce0.9Gd0.1O2-delta.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Review
Green & Sustainable Science & Technology
R. Vinoth Kumar, A. P. Khandale
Summary: This review focuses on the potential cobalt-based cathodes for low-temperature solid oxide fuel cells (LT-SOFC). The combination of novel elements and new materials in the architecture of LT-SOFC can increase its efficiency. Decoration of metal nanoparticles or thin films on cathodes can enhance their performance and stability.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
