Article
Chemistry, Inorganic & Nuclear
Kei Saito, Kotaro Fujii, Masatomo Yashima
Summary: BaY1/3Ga2/3O2.5 is a new type of mixed oxide-ion and proton conductor, with a high chemical and electrical stability, belonging to a new structure family of oxide-ion and proton conductors.
JOURNAL OF SOLID STATE CHEMISTRY
(2022)
Article
Chemistry, Physical
Wenlong Huang, Yushi Ding, Ying Li, Zezhong Wang
Summary: The new double perovskite-type proton conductor BBT30 exhibits high conductivity at high temperatures, with protonic conduction being predominant. It also has a higher proton transport number in atmospheric conditions compared to other double perovskite-type proton conductors.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Takashi Hirose, Takuya Mishina, Naoki Matsui, Kota Suzuki, Takashi Saito, Takashi Kamiyama, Masaaki Hirayama, Ryoji Kanno
Summary: SrLiH3 exhibits high hydride-ion conductivity. Computational and experimental results show that the smaller the ionic radius of alkaline-earth metals, the lower the migration barrier and the higher the hydride-ion conductivity. Introducing hydrogen vacancies by replacing strontium with sodium further improves the ionic conductivity.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Electrochemistry
Ahmed Afif, Nikdalila Radenahmad, Seikh Mohammad Habibur Rahman, Nico Torino, Muhammad Saqib, Shahzad Hossain, Jun-Young Park, Abul Kalam Azad
Summary: Protonic ceramic fuel cells show high power output at intermediate temperature range, with electrolyte materials demonstrating high stability and conductivity. The new BCZYYbZn05 material exhibits high stability and conductivity, performing well at 700 degrees C.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2022)
Article
Physics, Applied
Chandra P. Neupane, Jeremy Sylvester, Xianghan Xu, Sang-Wook Cheong, Feruz Ganikhanov
Summary: Time-domain coherent Raman techniques were used to selectively measure the ultrafast decay rates of optical phonons in cubic BaSnO3 perovskite. The damping rates of the phonon modes were found to be within 1.27-1.59 ps(-1) at room temperature, with Raman linewidths within 6.7-8.4 cm(-1). The study of phonon decay mechanisms is crucial for understanding the limiting factors in achieving high carrier mobility in device applications of the material.
APPLIED PHYSICS LETTERS
(2022)
Article
Chemistry, Physical
Ashley Weiland, Matthew G. Frith, Saul H. Lapidus, Julia Y. Chan
Summary: Flux growth synthesis is an advantageous method for growing single crystals of both congruently melting and metastable phases. Determining synthetic parameters for new crystalline phases is complex, requiring consideration of factors such as starting material purity, morphology, and heating profile variables. In situ monitoring of crystallite growth can elucidate reaction intermediates and growth mechanisms.
CHEMISTRY OF MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
P. Ksoll, R. Mandal, C. Meyer, L. Schuler, V Roddatis, V Moshnyaga
Summary: The [(LaNiO3)(n)/(LaMnO3)(n)] M/SrTiO3(111) superlattices with varying number of unit cells were investigated as precursor structures for the double perovskite La2NiMnO6. Optical ellipsometry, magnetic and Raman measurements revealed charge transfer at the LaNiO3/LaMnO3 interfaces, formation of La2NiMnO6 with specific oxidation states, and complex magnetic behavior in the superlattices. Structural reconstruction into a monoclinic (P-12) structure of the ordered La2NiMnO6 at the interface was observed along with charge transfer and magnetic behavior.
Article
Chemistry, Physical
Shuangbin Li, John T. S. Irvine
Summary: The demand for clean and sustainable energy has led to a growing interest in high temperature proton-conducting perovskite oxides, which show promising applications in the intermediate temperature range for clean energy. The control of defect chemistry is crucial in fine tuning properties for these applications, with a focus on structure-property relations and non-stoichiometry of perovskites.
SOLID STATE IONICS
(2021)
Article
Chemistry, Physical
Tomohiro Kuroha, Yoshiki Niina, Mizuki Shudo, Go Sakai, Naoki Matsunaga, Takehito Goto, Kosuke Yamauchi, Yuichi Mikami, Yuji Okuyama
Summary: This study investigates ceramic tape-casting and anode electrolyte co-firing for large-scale manufacturing of protonic ceramic fuel cells. It confirms the reactivity of certain metal elements with the anode material and reveals that NiO doping decreases the proton conductivity of all materials. The research identifies the suitable material BZYb20 for this fabrication technique.
JOURNAL OF POWER SOURCES
(2021)
Article
Materials Science, Ceramics
Zezhong Wang, Ying Li, Wenlong Huang, Yushi Ding
Summary: Ba3Ba1+xTa2-xO9-delta oxides demonstrate excellent proton conductivity within a certain temperature range.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Philippe Colomban
Summary: A didactic review of vibrational spectroscopy procedures for studying mobile protonic species in solid hydrates, crystals and ceramics is proposed. Representative examples of materials are given, and the advantages of isotopic substitution and dilution measurements are discussed. The vibrational signatures of different proton species and the characterization of protonic species without or with weak vibrational signatures are presented. The presence of a strong incoherent inelastic neutron scattering background appears to be characteristic of proton conductors.
SOLID STATE IONICS
(2023)
Article
Chemistry, Multidisciplinary
Shanshan Liu, Xue Han, Yuchao Chai, Guangjun Wu, Weiyao Li, Jiangnan Li, Ivan da Silva, Pascal Manuel, Yongqiang Cheng, Luke L. Daemen, Anibal J. Ramirez-Cuesta, Wei Shi, Naijia Guan, Sihai Yang, Landong Li
Summary: Efficient separation of acetylene and carbon dioxide was achieved under ambient conditions using faujasite zeolites decorated with atomically-dispersed copper(II) sites. The system displayed an unprecedented separation factor and effective dynamic uptake of acetylene, offering high purity acetylene recovery.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Nanoscience & Nanotechnology
Yaqiong Guo, Wenbin Guo, Libin Lei, Jungu Xu
Summary: This study reports a new oxide ion conductor, Sr2Nb2O7, in which oxide ion conduction is originated from the slight reduction of Nb5+ ions during the high-temperature synthesis process. The bond-valence-based method was used to investigate the oxide ion migration mechanism and revealed a two-dimensional pathway within the perovskite slabs.
SCRIPTA MATERIALIA
(2022)
Article
Engineering, Chemical
Adelya Khaliullina, Anastasia Meshcherskikh, Liliya Dunyushkina
Summary: The effect of Sr deficiency on the hydration process and conductivity of SrZrO3 proton conductors was investigated. Sr deficiency was found to enhance hydration ability and the ceramics with certain Sr deficiency showed purely protonic conductivity in humid atmospheres. The highest conductivity was achieved at a Sr content of 0.98.
Article
Chemistry, Physical
Donglin Han, Lulu Jiang, Peng Zhong
Summary: This study improved the phase compatibility between BaZrO3-based electrolyte and NiO electrode substrate by adjusting the electrolyte composition and selecting proper dopants. However, high temperature heat treatment during co-sintering led to Ni diffusion into the electrolyte layer, negatively impacting performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Ceramics
Liliana Gianni, Helene Renel, Aleksandar Kremenovic, Philippe Colomban
Summary: Representative 'Blue speckled' and 'Brown speckled' wares from Qalhat and Bahla in Oman were analyzed using various techniques. The study revealed differences in composition, firing temperatures, and glaze types and compositions. It is suggested that the wares were locally produced, but the origin of the glazes used in the 'Blue speckled' wares remains uncertain.
BOLETIN DE LA SOCIEDAD ESPANOLA DE CERAMICA Y VIDRIO
(2022)
Article
Geochemistry & Geophysics
Hao Li, Joan Andujar, Aneta Slodczyk, Domingos De Sousa Meneses, Bruno Scaillet, Patrick Echegut, Jonas Biren, Clive Oppenheimer
Summary: This study investigates the relationship between the spectral emissivity of lava and temperature, filling a knowledge gap through laboratory spectral measurements and revealing the complexity and contrasting behavior of radiative properties of two magma compositions. The results highlight the significant variations in spectral emissivity due to temperature, composition, crystallinity, thickness, and thermal history, challenging previous assumptions about lava emissivity. Additionally, the laboratory-measured spectral emissivity values were used to refine the temperature estimation of Erebus lava lake based on remote-sensing methods.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2022)
Article
Chemistry, Physical
Philippe Colomban
Summary: This study compares the Raman signatures of different colored enamels used in European, Chinese, and Japanese porcelains and enameled metalworks. The results show that Raman microspectroscopy can identify fingerprint spectra of milestone technologies and is a useful tool for detecting copies.
Article
Nanoscience & Nanotechnology
Cyrille Neto, Hien T. T. Pham, Rachelle Omnee, Aurelien Canizares, Aneta Slodczyk, Michael Deschamps, Encarnacion Raymundo-Pinero
Summary: This article discusses the importance of developing new electrolytes like WISEs for environmentally friendly and nonflammable batteries and supercapacitors based on aqueous electrolytes. Studying the charging mechanism is essential for optimizing the performance of WISE-based supercapacitors. By investigating the carbon/electrolyte interface in detail, crucial information about the electrolyte structure and its impact on charge storage mechanism is provided.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Geosciences, Multidisciplinary
Jonas Biren, Aneta Slodczyk, Joan Andujar, Leire del Campo, Lionel Cosson, Hao Li, Emmanuel Veron, Cecile Genevois, Sandra Ory, Muhammad Aufaristama
Summary: Temperature is a key parameter controlling the rheology of lava flows. However, the temperature of lava products is mostly retrieved by remote sensing techniques which are subjected to important errors related to spectral emissivity. This study explores the emissivity-temperature relationship of three different basalts and provides new insights to reduce uncertainties in temperature estimates based on IR technology.
JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
(2022)
Article
Chemistry, Physical
Ivette Aguilar, Pierre Lemaire, Nawfel Ayouni, Ezzoubair Bendadesse, Anatolii Morozov, Ozlem Sel, Veronique Balland, Benoit Limoges, Artem M. Abakumov, Encarnacion Raymundo-Pinero, Aneta Slodczyk, Aurelien Canizares, Dominique Larcher, Jean-Marie Tarascon
Summary: In this study, the chemistry of rechargeable zinc-manganese dioxide batteries was revisited through a combination of solution chemistry considerations and analytical techniques. The role of electrolyte and its pH in the electrochemical response of the system was confirmed. Experimental evidence for the occurrence of electrodissolution and electrodeposition of MnO2, as well as the formation of soluble zinc hydroxides and chemical precipitation, was provided. The presence of a specific phase was shown to be essential in buffering the system's pH and enhancing the capacity retention.
ENERGY STORAGE MATERIALS
(2022)
Article
Chemistry, Physical
Philippe Colomban
Summary: A didactic review of vibrational spectroscopy procedures for studying mobile protonic species in solid hydrates, crystals and ceramics is proposed. Representative examples of materials are given, and the advantages of isotopic substitution and dilution measurements are discussed. The vibrational signatures of different proton species and the characterization of protonic species without or with weak vibrational signatures are presented. The presence of a strong incoherent inelastic neutron scattering background appears to be characteristic of proton conductors.
SOLID STATE IONICS
(2023)
Article
Materials Science, Ceramics
Philippe Colomban, Gulsu Simsek Franci, Jacques Burlot, Xavier Gallet, Bing Zhao, Jean-Baptiste Clais
Summary: On-site pXRF analysis is conducted on French collections of decorated porcelains from the Qing Dynasty to identify enamel types, ions and coloring phases, as well as differentiate between Chinese/Asian raw materials and those imported by European missionaries. The study focuses on cobalt-associated elements, impurities in the silicate matrix, and the use of gold or copper nanoparticles. Comparisons are made with previous measurements on Qing imperial porcelains, Cantonese productions, and blue-and-white wares from different museums and collections.
CERAMICS-SWITZERLAND
(2023)
Article
Spectroscopy
Jacques Burlot, Divine Vangu, Ludovic Bellot-Gurlet, Philippe Colomban
Summary: This study analyzes the yellow pigments of enameled objects from 18th century French and Chinese productions and identifies different types of Raman signatures. The combination of spectral decomposition parameters and PCA analysis proves effective in categorizing the pigments.
JOURNAL OF RAMAN SPECTROSCOPY
(2023)
Article
Spectroscopy
Jacques Burlot, Divine Vangu, Ludovic Bellot-Gurlet, Philippe Colomban
Summary: Raman analysis is utilized to study the phases observed in the different colored enamels of French and Chinese objects from the 18th century. The effectiveness of a solid-state spectroscopic approach and a multivariate chemometric approach is compared. The incorporation of spectra from similar phases in the literature is crucial for obtaining quality results. The combination of visual observation and multivariate analysis reveals that different production techniques result in variations in the peaks associated with the main As-O stretching vibration. Arsenic-based opacifiers are detected in the enamelled artifacts, both in French and Chinese objects.
JOURNAL OF RAMAN SPECTROSCOPY
(2023)
Article
Geochemistry & Geophysics
Philippe Colomban, Gulsu Simsek Franci
Summary: Raw materials play a significant role in determining the composition and properties of fired ceramics. Raman analysis was used to characterize the micro- and nanostructures of glazes from various regions, revealing three different types of glazes and identifying specific color compositions. Different pigments and opacifiers were also identified. The results provide insights into the production and connection between different ceramic artifacts.
Article
Chemistry, Analytical
Armin Mozhdehei, Aneta Slodczyk, Eirik Almklov Magnussen, Achim Kohler, Christophe Sandt, Ferenc Borondics, Lionel Mercury
Summary: Mid-infrared microspectroscopy is a non-invasive technique that can identify molecular structure and chemical composition at a small scale. High-resolution measurements are required for investigating small objects, and different protocols and machines were tested in this study.
Article
Humanities, Multidisciplinary
Philippe Colomban, Gulsu Simsek Franci, Michele Gironda, Pauline d'Abrigeon, Anne-Claire Schumacher
Summary: Raman and XRF analyses have shown that it is possible to identify specific phases and elements used in ceramics made with European recipes and ingredients. The study focused on ceramics produced in the Forbidden City during the Qing Dynasty and in Guangzhou, and found that they used the same raw materials. The study also observed some artifacts with anachronistic characteristics that suggest they were produced around 1850.
Article
Chemistry, Physical
Philippe Colomban, Michele Gironda, Gulsu Simsek Franci, Pauline D'Abrigeon
Summary: This study applies non-invasive on-site portable techniques, Raman microscopy, and X-ray fluorescence spectroscopy to analyze imperial bowls and decorated dishes from the Qing Dynasty. The findings reveal variations in coloring agents and glaze compositions, highlighting the uniqueness of each object instead of small-scale production.
Article
Humanities, Multidisciplinary
Gulsu Simsek Franci, Philippe Colomban
Summary: The invention of European hard porcelain, which imitates Chinese porcelain, began with the development of red porcelain technology by Johann Friedrich Bottger in Meissen, Saxony. This study compares the chemical characteristics of European and Chinese red stoneware using on-site characterization techniques. The results show significant differences between Dutch objects and others, and provide a methodology for distinguishing the provenance and authenticity of artifacts.
