Article
Chemistry, Physical
Yuchuan Feng, Minghui Wang, Lina Gao, Zhaoling He, Kai Chen, Zheng Li, Hongcai he, Yuanhua Lin
Summary: The use of fast ionic conductor ceramic composite separator as an alternative to traditional ceramic coated separators can further improve the performance of lithium-ion batteries by enhancing rate capability and cyclic performance.
JOURNAL OF MATERIOMICS
(2022)
Article
Materials Science, Ceramics
Lingjun Shu, Bo Liang, Liangliang Yu, Changgui Lin, Chengwei Gao, Xiang Shen, Yongxing Liu, Qing Jiao
Summary: In this study, we report the design and synthesis of a Na3SbS4-Na2W0.77S4I0.6 glass-ceramic electrolyte. By doping with iodine (I), a high room-temperature conductivity was achieved. The electrolyte also exhibited excellent air stability, making it a promising sulfide electrolyte for all solid-state sodium battery applications.
CERAMICS INTERNATIONAL
(2022)
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
Chemistry, Physical
Mehrzad Soleimany, M. H. Paydar, Shaorong Wang
Summary: The study found that NiO doping can improve the flash-sintering performance of the BZCY7 compound, reducing the onset temperature and enhancing sinterability. NiO doping leads to larger grain sizes without segregation or second-phase formation. Additionally, the conductivity and activation energy of NiO-doped samples were higher than undoped samples.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Ceramics
Thomas Herisson de Beauvoir, Pierre-Louis Taberna, Patrice Simon, Claude Estournes
Summary: This paper presents the application of in situ impedance analysis in the Cold Sintering Process (CSP), specifically focusing on the influence of acetic acid on the sintering of ZnO and the resulting ceramics. The results demonstrate that this in situ characterization technique has the potential to be applied to a wide range of materials.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Nanoscience & Nanotechnology
Gerrit Michael Overhoff, Md Yusuf Ali, Jan-Paul Brinkmann, Peter Lennartz, Hans Orthner, Mohaned Hammad, Hartmut Wiggers, Martin Winter, Gunther Brunklaus
Summary: Researchers have developed a ceramic-polymer hybrid electrolyte to enhance the performance of rechargeable lithium metal batteries. The hybrid electrolyte, featuring an oxide-rich layer, stabilizes the interface between lithium metal and the electrolyte, reducing polarization and lithium dendrite growth. Experimental results show that the hybrid electrolyte enables long-term single-side lithium deposition at high current densities and exhibits high ionic conductivities. In LiNi0.6Co0.2Mn0.2O2||Li metal cells, the electrolyte demonstrates impressive capacity retention.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Xiaoxuan Luo, Aditya Rawal, Muhammad Saad Salman, Kondo-Francois Aguey-Zinsou
Summary: This paper reports on a method to enhance the Na+ ionic conductivity in NaBH4 by engineering a conductive interface. By reacting with B2H6, the ionic conductivity of NaBH4 is increased by 5 orders of magnitude at room temperature. This enhancement is attributed to the formation of a Na2B12H12 layer on the surface of alpha-NaBH4 particles. The resulting NaBH4@ Na2B12H12 heterostructure exhibits a high ionic conductivity of 10(-4) S cm(-1) at 115 degrees C, surpassing pristine NaBH4, and shows potential as a solid-state electrolyte for all Na solid-state batteries.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
Dongyeon Kim, Kyung Taek Bae, Kyeong Joon Kim, Ha-Ni Im, Seungsoo Jang, Seeun Oh, Sang Won Lee, Tae Ho Shin, Kang Taek Lee
Summary: Protonic ceramic electrochemical cells (PCECs) have been attracting attention due to their ability to convert chemical fuels into electricity at low temperatures. However, conventional sintering conditions often result in nonstoichiometric electrolytes and electrode coarsening, leading to performance degradation. In this study, PCECs were fabricated through a microwave-assisted sintering process, which effectively suppressed undesirable diffusion and growth, thus producing PCECs with stoichiometric electrolytes and nanostructured fuel electrodes. The resulting PCECs demonstrated higher electrochemical performance compared to conventionally sintered PCECs, highlighting the effectiveness of the ultrafast sintering technique.
ACS ENERGY LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Zheng Sun, Yang Li, Mingquan Liu, Haibo Jin, Yongjie Zhao
Summary: In this study, an efficient method to select sintering aids for oxide materials is developed. Na2B4O7, NaF, and CuO are selected as sintering aids for Na3Zr2Si2PO12 ceramic, leading to improved sinterability and densification. The modified ceramic electrolyte shows enhanced room temperature ionic conductivity and stability, resulting in superior cycling stability and rate capability of solid-state sodium batteries.
Article
Nanoscience & Nanotechnology
Yasser Ashraf Gandomi, Irina Krasnikova, Nikita O. Akhmetov, Nikolay A. Ovsyannikov, Mariam A. Pogosova, Nicholas J. Matteucci, Christopher T. Mallia, Bertrand J. Neyhouse, Alexis M. Fenton, Fikile R. Brushett, Keith J. Stevenson
Summary: A study on composite polymer-inorganic binder-filler membranes for redox flow batteries was conducted, focusing on the performance of different ceramic compounds blended with a polymeric matrix. The results showed that mechanically robust and chemically stable composite membranes can support high current density, but further improvements are needed in terms of selectivity.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
S. Balakrishnan, A. Sree Rama Murthy, A. S. Suneesh, B. Robert Selvan, S. Sriram, Manish Chand, N. Ramanathan, V. Jayaraman
Summary: The rising interest in sodium-ion batteries is due to the widespread availability of sodium and the requirement for materials with structural stability and high ion conductivity. This study investigates the feasibility of using strontium substituted sodium iron titanate as a potential sodium-ion conductor.
SOLID STATE IONICS
(2023)
Article
Chemistry, Physical
Grazia Accardo, Ander Orue, Dimitrios Chatzogiannakis, Pawel Gluchowski, Montserrat Casas-Cabanas, Pedro Lopez-Aranguren
Summary: In this study, a two-step process to fabricate LLZO electrolytes with a high relative density under low temperature was proposed. The high-pressure low-temperature method was used to achieve high ionic conductivity, and the practical application was demonstrated through experiments on lithium stripping and plating. This research provides guidelines for controlling the microstructure of LLZO and contributes to the understanding of the correlations between microstructure and conductivity.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Bo Keun Park, Kyoung Ho Kim, Yong Gab Kwon, Jin Hyeok Yang, Yong Min Kim, Dae-Woong Nam, Ki Jae Kim
Summary: Sodium-ion batteries (SIBs) have gained attention as alternatives to lithium-ion batteries (LIBs) due to the abundance of sodium resources and similar electrochemical properties. However, current separators used in LIBs have poor compatibility with SIBs, necessitating the development of a separator with the advantages of a thin polyethylene (PE) separator and the open-pore structure and polar properties of a glass fiber (GF) separator. In this study, a custom-made separator, PAN-AlOOH separator, was proposed for SIBs, integrating highly polar boehmite (AlOOH) particles into a polyacrylonitrile (PAN) separator using electrospinning. The PAN-AlOOH separator exhibited excellent thermal stability, dimensional stability, wettability, and ionic conductivity, outperforming Na full cells employing a GF separator.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
G. M. M. M. Lustosa, M. G. S. Franchetti, A. de Souza, F. A. B. Goulart, L. da Conceicao, M. A. C. Berton
Summary: The research proposes a novel synthesis method to obtain a Li5La3Nb2O12 Garnet structure as a solid state electrolyte for next generation Li-Battery. Through unique processing, the ceramic powder exhibits high conductivity, showing potential for widespread application in battery technology.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Chemistry, Physical
Dazhe Li, Hui Wang, Longbo Luo, Jiadeng Zhu, Junfeng Li, Pengqing Liu, Yuanyuan Yu, Mengjin Jiang
Summary: The novel separator es-Li-SPEOD, synthesized from Li-SPEOD, demonstrates excellent mechanical and fire-resistance properties, with the ability to maintain dimensional stability at up to 400 degrees C in air. Compared to the traditional Celgard-2500, es-Li-SPEOD shows significantly improved ionic conductivity and lithium-ion transference number in lithium-ion batteries, leading to enhanced rate capability and cycle performance of LiFePO4-Li half-cells, as well as outstanding dendrite-suppressing effect for lithium metal anodes.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
George Hasegawa, Yuto Akiyama, Moeko Tanaka, Ryo Ishikawa, Hirofumi Akamatsu, Yuichi Ikuhara, Katsuro Hayashi
ACS APPLIED ENERGY MATERIALS
(2020)
Article
Chemistry, Inorganic & Nuclear
Naoya Haraguchi, Tomoki Okunaga, Yuto Shimoyama, Naoki Ogiwara, Soichi Kikkawa, Seiji Yamazoe, Miki Inada, Takashi Tachikawa, Sayaka Uchida
Summary: In this study, a redox-active ionic crystal based on a Dawson-type polyoxometalate was utilized to form and stabilize small mixed-valence luminescent silver clusters without the aid of protecting ligands at room temperature. Through ion-exchange and electron-transfer reactions, silver ions were introduced to form mixed-valence luminescent clusters, which were found to exist in a tetrahedral geometry based on photoluminescence and X-ray absorption fine structure analysis.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Physical
Masashi Nakamura, Hiroshi Watanabe, Hirofumi Akamatsu, Kotaro Fujii, Masatomo Yashima, George Hasegawa, Miki Inada, Katsuro Hayashi, Kazuhiko Maeda
Summary: A new Pb-free perovskite material with a wide range of visible-light absorption was successfully synthesized via hydride (H-) ion doping. The material showed a significant reduction in optical band gap and a clear anodic photoresponse when used as a photoelectrode material, demonstrating its potential for photofunctional applications. The utilization of stereoactive lone pair of electrons in combination with H- doping may provide another approach to the band gap reduction of Sn(IV)-based oxides, which are nontoxic and less expensive, but generally wide-gap semiconductors.
CHEMISTRY OF MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Naoto Toyomura, George Hasegawa, Kazuma Nishimi, Miki Inada, Naoya Enomoto, Katsuro Hayashi
Summary: Dense ceramics of Na3xLa2/3-xZrO3-delta with orthorhombic perovskite structure were prepared by spark plasma sintering to investigate their Na+ ion conducting behaviors. Despite suppressed Na volatilization, the Na component tends to be partially lost during sintering, limiting the chemical composition of the perovskite. Samples with specific compositions showed enhanced bulk conductivity and lower activation energy compared to isostructural titanate-derivative materials.
SCRIPTA MATERIALIA
(2021)
Article
Engineering, Chemical
Wojciech Klich, Miki Inada, Hongy Gao, Hikaru Saito, Michitaka Ohtaki
Summary: This study reported the synthesis of novel asymmetric micron-sized ZnO single crystals using microwave irradiation, demonstrating unique morphological features. The investigation of zinc ion concentration on size and shape led to the discovery of the nearly mono-dispersed ZnO single crystals with truncated hexagonal pyramid morphology. Advanced imaging techniques revealed the crystallographic orientation and polarity relationship in the obtained ZnO microcrystals.
ADVANCED POWDER TECHNOLOGY
(2021)
Article
Physics, Multidisciplinary
Suguru Yoshida, Hirofumi Akamatsu, Katsuro Hayashi
Summary: The study proposes that the bonding interaction between Bloch states leads to atomic displacements of unstable zone-boundary phonon modes via the pseudo- or second-order Jahn-Teller effect. It is shown that rotations of anion coordinated octahedra are induced by this bonding mechanism. The proposed mechanism could offer a general approach to understanding the origin of structural phase transitions in crystals.
PHYSICAL REVIEW LETTERS
(2021)
Article
Materials Science, Ceramics
Shufan Jia, Hirofumi Akamatsu, George Hasegawa, Saneyuki Ohno, Katsuro Hayashi
Summary: This study investigates the glass-ceramic processes to prepare NASICON-type NaxTi(2)(PO4)(3) as an anode candidate for sodium-ion batteries under different atmospheric conditions. The formation of NASICON-type NaTi2(PO4)(3) or Na3Ti2(PO4)(3) is observed depending on the inert or reducing atmosphere. The electrochemical properties and Na+ -storage capabilities of the glass-ceramic electrodes are correlated with the phase composition and fractions.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Inorganic & Nuclear
Masashi Nakamura, Hirofumi Akamatsu, Kotaro Fujii, Yusuke Nambu, Yoichi Ikeda, Tomoki Kanazawa, Shunsuke Nozawa, Masatomo Yashima, Katsuro Hayashi, Kazuhiko Maeda
Summary: The study reveals that H-doped ASn0.7Y0.3O3-delta have almost identical bandgaps regardless of the A-site cation. Appropriate preparation conditions are essential for obtaining H-doped products with low defect densities.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Kenji Arai, Miwa Saito, Kyohei Suganami, Miki Inada, Katsuro Hayashi, Teruki Motohashi
Summary: The proton-conductive behaviors of oxy-hydroxide perovskites Ba(ZnxNb1-x)O3-delta-y(OH)(2y) (BZN) were investigated using Fourier transform infrared spectroscopy (FT-IR), revealing the existence of site preference of protons in the crystal lattice.
JOURNAL OF SOLID STATE CHEMISTRY
(2022)
Article
Chemistry, Physical
Masaki Shimoda, Mayu Maegawa, Suguru Yoshida, Hirofumi Akamatsu, Katsuro Hayashi, Prashun Gorai, Saneyuki Ohno
Summary: This study discusses the thermodynamic origin of sample-dependent variations in highly conductive solid electrolytes (SEs) using Na3SbS4 as a model SE. The impact of uncontrolled variations in elemental chemical potentials on ionic conductivity is investigated with theory and experiments. It is shown that by controlling the chemical potentials through phase boundary mapping, the sample-dependent variation is reduced and reproducibly high ionic conductivity is achieved.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Physical
Shufan Jia, Saneyuki Ohno, Jian Wang, George Hasegawa, Hirofumi Akamatsu, Katsuro Hayashi
Summary: By investigating the impacts of an electrode active material with a thickness of 1 μm on the performance of an oxide-based all-solid-state battery, this study presents a rapid method for evaluating electrode material compatibility and electrode design.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Aierxiding Abulikemu, Toshiyuki Matsunaga, Xian Shi, Mukesh Kumar, Neha Thakur, Tsuyoshi Takami, Kentaro Yamamoto, Tomoki Uchiyama, Toshiki Watanabe, Miki Inada, Yoshiharu Uchimoto
Summary: Layered-type Li-rich cathode materials have high capacity but poor reversibility. Researchers used a combination of oxygen vacancy introduction and surface fluorination to modify the materials, improving reversible capacity and slowing down capacity decay. This study reveals a new strategy to enhance the performance of cathode materials for lithium-ion batteries.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Ceramics
Shingo Hirata, Aya Inoue, Miki Inada, Junichi Hojo
Summary: In this study, a mesoporous SiO2-TiO2/WO3 composite was prepared by the sol-gel method for removing acetaldehyde in the gas phase. The adsorption-photodecomposition properties of the composite material were evaluated through a three-step kinetic analysis, with the addition of WO3 enhancing the affinity between the photocatalyst and acetaldehyde. The presence of WO3 improved the initial removal rate of acetaldehyde, highlighting its potential for environmental pollutant removal.
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN
(2021)
