Article
Chemistry, Physical
Nair Afijith Ravindranath, P. C. Clinsha, Ramanathaswamy Pandian, Gomathi Natarajan, Ashok Bahuguna, S. Abhaya, N. Sivaraman, K. I. Gnanasekar
Summary: The polarization resistances at Pt/YSZ and ITO/YSZ interfaces were studied on thin film structures with a large surface area to volume ratio. The high polarization resistance of the Pt/YSZ interface at an operating temperature of 873 K is significantly reduced by at least three orders of magnitude in ITO/YSZ due to the partial solubility of ITO in YSZ, allowing for a temperature reduction to around 673 K. The conductivity of YSZ thin films with Pt and ITO electrodes in a sandwiched configuration was compared in the temperature range of 673 - 973 K for Pt|YSZ|Pt and ITO|YSZ|ITO multilayers. Textured thin films of Pt, ITO, and 8 mol% Yttria-stabilized zirconia (YSZ) with columnar growth were deposited on (100) SrTiO3.
SURFACES AND INTERFACES
(2023)
Article
Electrochemistry
Mirai Takeda, Keiji Yashiro, Riyan Achmad Budiman, Shinichi Hashimoto, Tatsuya Kawada
Summary: Electrochemical measurements are conducted on a Ni-dense electrode in a YSZ electrolyte to investigate the relationship between capacitance and double-phase boundary (DPB) of Ni-YSZ. By varying the electrode diameter, the capacitance is found to be proportional to the DPB area. This correlation is further confirmed in electrochemical measurements of the Ni-YSZ porous electrode using a transmission-line model.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Materials Science, Ceramics
Liya Cheng, Qiuqiu Lyu, Zongxun Li, Yang Liu, Chao Jin, Na Xu, Qin Zhong, Tenglong Zhu
Summary: Modifying the thin film electrolyte improves the performance, reliability, and durability of solid oxide fuel cells (SOFCs).
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Chemistry, Physical
Junya Ohyama, Hideto Ushijima, Takashi Yamashita, Akihiro Yamashita, Hiroshi Yoshida, Masato Machida
Summary: Improving the catalysts for hydrogen oxidation reaction (HOR) in alkaline conditions is crucial for the development of anion exchange membrane fuel cells. Previous studies have shown that Pt catalysts can be enhanced by forming coordinationally saturated surface sites and also by combining Pt with other metals. This study demonstrates the use of Pt-Ni alloy thin films as highly active structures in alkaline HOR, with improved activity compared to Pt monometal thin-film and nanoparticle catalysts.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Materials Science, Ceramics
Jier Qiu, Deping Yu, Yu Xiao, Ying Fan, Yiwen Chen, Dingjun Li
Summary: A novel method for preparing YSZ-STHS powder using a triple-cathode plasma torch with a hot-wall nozzle was proposed. Experimental results showed that YSZ-STHS with a high spheroidization ratio close to 100%, a high hollow powder ratio of 93.4%, a thin shell thickness with an average value of 3.63 μm, and fully tetragonal phase was successfully prepared, demonstrating the effectiveness of the proposed method.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Jeong Woo Shin, Seongkook Oh, Sungje Lee, Dohyun Go, Joonsuk Park, Hyong June Kim, Byung Chan Yang, Gu Young Cho, Jihwan An
Summary: Surface modification of electrodes is crucial for improving the performance of low-temperature solid oxide fuel cells. The ALD CeO2-coated Pt anode structure showed a significant improvement in anode kinetics, leading to a decrease in activation resistance and an increase in maximum power density.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Multidisciplinary
Ning Wang, Zhi-Yin Huang, Chun-Mei Tang, Li-Xin Xing, Ling Meng, Yoshitaka Aoki, Lei Du, Si-Yu Ye
Summary: Protonic ceramic fuel cells (PCFCs) have attracted attention due to their high-efficiency power generation in an intermediate-temperature range. The development of a triple H+/e(-)/O2- conductor for PCFC cathode remains challenging.
Article
Chemistry, Physical
Guoyu Shi, Tetsuro Tano, Donald A. Tryk, Akihiro Iiyama, Makoto Uchida, Katsuyoshi Kakinuma
Summary: The study demonstrates that the activity of Pt/Nb-SnO2 catalyst increases with temperature and Pt loading, as the high Pt loading leads to the formation of a surface structure favorable for ORR. This enhancement is attributed to an increase in the pre-exponential factor of the Arrhenius equation, possibly linked to the increased exposure of (111)-like facets.
Article
Materials Science, Ceramics
Chan-ho Park, Yo Han Kim, Hyeongwon Jeong, Bo-Ram Won, Hyejin Jeon, Jae-ha Myung
Summary: In this study, a gas-tight YSZ thin-film electrolyte was successfully deposited on a Ni-YSZ anode support using RF sputtering. The thin-film electrolyte exhibited high ionic conductivity and gas tightness, achieving a high open-circuit voltage and maximum power density. The study provides guidelines for the practical application of thin films as electrolytes to lower the operating temperature of SOFCs.
CERAMICS INTERNATIONAL
(2023)
Article
Electrochemistry
Eva Marra, Henrik Grimler, Gerard Montserrat-Siso, Rakel Wreland Lindstrom, Bjorn Wickman, Goran Lindbergh, Carina Lagergren
Summary: This study utilized a Pt electrode with a thin film deposited on the gas diffusion layer to investigate the oxygen reduction reaction in an AEMFC. The experimental results showed that decreasing O2 partial pressure leads to a negative shift in cell voltage and maximum attainable current density, with a relatively constant Tafel slope observed at higher voltages.
ELECTROCHIMICA ACTA
(2022)
Article
Green & Sustainable Science & Technology
Yue Teng, Ho Yeon Lee, Haesu Lee, Yoon Ho Lee
Summary: This study aimed to lower the operating temperature of solid oxide fuel cells by reducing the thickness of the electrolyte via sputtering. The gas-tightness of the YSZ electrolytes was evaluated by observing the nanostructure and cell performance. The study successfully developed a room-temperature YSZ electrolyte fabrication process with excellent gas-tightness and performance, and proved a strong relationship between gas-tightness and residual stress.
Article
Chemistry, Multidisciplinary
Katherine Develos-Bagarinao, Toshiaki Yamaguchi, Haruo Kishimoto
Summary: In order to improve the performance and stability of solid oxide cells (SOCs), this study compares anode-supported cells with thin films to those with conventional screen-printed yttria-stabilized zirconia (YSZ). It is found that thin film structures can suppress nickel diffusion and reduce resistance, resulting in excellent performance and durability in fuel cell operation.
Article
Engineering, Chemical
Michele Gibelli, Giulio Cordaro, Alessandro Donazzi
Summary: In this study, symmetric electrolyte-supported YSZ cells infiltrated with LSF were prepared, characterized, and tested in the oxygen reduction reaction. The effects of calcination temperature and precursors load on the ORR activity were investigated, with optimal performance achieved at 750 degrees C and with LSF loads between 20% and 40%. Equivalent circuit analysis of the EIS results indicated that the reactivity at the LSF/gas interface is rate-determining.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Review
Engineering, Chemical
Ying Yang, Yanxiang Zhang, Mufu Yan
Summary: Solid oxide fuel cells (SOFCs) are attractive energy conversion devices due to their fuel flexibility, environmental friendliness, and promising energy conversion efficiency. However, the high operating temperature of SOFCs poses challenges in stability, sealing integrity, and safety. Lowering the operating temperature to 600°C or lower is an important research topic. Magnetron sputtering is gaining attention as a thin-film preparation technology for electrolyte thin films with high stability and performance at lower temperatures. This comprehensive review analyzes various electrolyte preparation methods, focusing on magnetron sputtering technology for oxygen-ion conducting electrolyte thin films. The effects of processing parameters on the microstructures and properties of the thin films, as well as the relevant interfaces and full SOFCs, are discussed. Perspectives and directions for developing high-performance SOFCs with thin-film electrolytes prepared by magnetron sputtering technology are presented.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Review
Chemistry, Analytical
Edmundo S. Valerio Neto, Caio V. S. Almeida, Flavio Colmati, Eduardo G. Ciapina, Giancarlo R. Salazar-Banda, Katlin I. B. Eguiluz
Summary: Pt nanoparticles are widely used as catalysts in low-temperature fuel cells. However, the high cost and limited supply of Pt have led to the search for alternative materials. Recent research has shown that Pt nanowires and their alloys offer a promising solution.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Acoustics
Andrea Lozzi, Ernest Ting-Ta Yen, Paul Muralt, Luis Guillermo Villanueva
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL
(2019)
Article
Materials Science, Multidisciplinary
Cosmin Silviu Sandu, Fazel Parsapour, Stefan Mertin, Vladimir Pashchenko, Ramin Matloub, Thomas LaGrange, Bernd Heinz, Paul Muralt
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2019)
Article
Materials Science, Coatings & Films
Kaitlin M. Howell, Waqas Bashir, Annalisa De Pastina, Ramin Matloub, Paul Muralt, Luis G. Villanueva
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2019)
Article
Nanoscience & Nanotechnology
Faze Parsapour, Vladimir Pashchenko, Nicolas Kurz, Cosmin Silviu Sandu, Thomas LaGrange, Kaoru Yamashita, Vadim Lebedev, Paul Muralt
ADVANCED ELECTRONIC MATERIALS
(2019)
Article
Physics, Applied
Fazel Parsapour, Vladimir Pashchenko, Hugo Chambon, Pascal Nicolay, Ingo Bleyl, Ulrike Roesler, Paul Muralt
APPLIED PHYSICS LETTERS
(2019)
Article
Materials Science, Multidisciplinary
Ahsanul Kabir, Simone Santucci, Ngo Van Nong, Maxim Varenik, Igor Lubomirsky, Robin Nigon, Paul Muralt, Vincenzo Esposito
Article
Materials Science, Multidisciplinary
C. S. Sandu, F. Parsapour, D. Xiao, R. Nigon, L. M. Riemer, T. LaGrange, P. Muralt
Editorial Material
Materials Science, Multidisciplinary
Paul Muralt
Article
Multidisciplinary Sciences
D-S Park, A. D. Rata, I. Maznichenko, S. Ostanin, Y. L. Gan, S. Agrestini, G. J. Rees, M. Walker, J. Li, J. Herrero-Martin, G. Singh, Z. Luo, A. Bhatnagar, Y. Z. Chen, V Tileli, P. Muralt, A. Kalaboukhov, I Mertig, K. Doerr, A. Ernst, N. Pryds
NATURE COMMUNICATIONS
(2020)
Article
Engineering, Electrical & Electronic
Adrien Piot, Jaka Pribosek, Jordan Maufay, Johannes Schicker, Andreas Tortschanoff, Ramin Matloub, Paul Muralt, Mohssen Moridi
Summary: The paper presents a systematic approach to transduction optimization of resonant piezo-based MEMS devices by utilizing inverse design and mechanical action to calculate the polarization map. The proposed method resulted in a 70% increase in optical scan angle and 47% reduction in power consumption.
JOURNAL OF MICROELECTROMECHANICAL SYSTEMS
(2021)
Article
Chemistry, Multidisciplinary
Quentin Micard, Giacomo Clementi, Ausrine Bartasyte, Paul Muralt, Guglielmo G. Condorelli, Graziella Malandrino
Summary: The impact of Dy doping on the ferroelectric, dielectric, and pyroelectric properties of BiFeO3 films was investigated. It was found that Dy doping significantly increases the dielectric response and pyroelectric coefficient, with the best performance achieved at a concentration of 8% Dy. The results show that Dy-doped lead-iron oxide films have high thermal energy harvesting efficiency.
ADVANCED MATERIALS INTERFACES
(2022)
Editorial Material
Physics, Applied
Isaku Kanno, Jun Ouyang, Jun Akedo, Takeshi Yoshimura, Barbara Malic, Paul Muralt
APPLIED PHYSICS LETTERS
(2023)
Correction
Materials Science, Multidisciplinary
Paul Muralt
Proceedings Paper
Engineering, Electrical & Electronic
Stefan Mertin, Clemens Nyffeler, Tapani Makkonen, Bernd Heinz, Andrea Mazzalai, Thorsten Schmitz-Kempen, Stephan Tiedke, Tuomas Pensala, Paul Muralt
2019 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IUS)
(2019)
Proceedings Paper
Engineering, Electrical & Electronic
Paul Muralt, Vladimir Pashchenko, Fazel Parsapour, Stefan Mertin, Bernd Heinz, Pascal Nicolay
2019 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IUS)
(2019)
Article
Chemistry, Physical
Tianyu Chen, Zhibin Lu, Guangjin Zeng, Yongmin Xie, Jie Xiao, Zhifeng Xu
Summary: The study introduces a high-performance LSGM electrolyte-supported tubular DC-SOFC stack for portable applications, which shows great potential in developing into high-performing, efficient, and environmentally friendly portable power sources for distributed applications.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Wenbin Tong, Yili Chen, Shijie Gong, Shaokun Zhu, Jie Tian, Jiaqian Qin, Wenyong Chen, Shuanghong Chen
Summary: In this study, a three-dimensional porous NiO interface layer with enhanced anode dynamics is fabricated, forming a Schottky contact with the zinc substrate, allowing rapid and uniform zinc plating both inside and below the interface layer. The resulting NiO@Zn exhibits exceptional stability and high capacity retention.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yafeng Bai, Kaidi Li, Liying Wang, Yang Gao, Xuesong Li, Xijia Yang, Wei Lu
Summary: In this study, a flexible zinc ion supercapacitor with gel electrolytes, porous alpha-MnO2@reduced graphene oxide cathode, and activated carbon/carbon cloth anode was developed. The device exhibits excellent electrochemical performance and stability, even at low temperatures, with a high cycle retention rate after 5000 cycles.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Anmol Jnawali, Matt D. R. Kok, Francesco Iacoviello, Daniel J. L. Brett, Paul R. Shearing
Summary: This article presents the results of a systematic study on the electrochemical performance and mechanical changes in two types of commercial batteries with different anode chemistry. The study reveals that the swelling of anode layers in batteries with silicon-based components causes deformations in the jelly roll structure, but the presence of a small percentage of silicon does not significantly impact the cycling performance of the cells within the relevant state-of-health range for electric vehicles (EVs). The research suggests that there is room for improving the cell capacities by increasing the silicon loading in composite anodes to meet the increasing demands on EVs.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yohandys A. Zulueta, My Phuong Pham-Ho, Minh Tho Nguyen
Summary: Advanced atomistic simulations were used to study ion transport in the Na- and K-doped lithium disilicate Li2Si2O5. The results showed that Na and K doping significantly enhanced Li ion diffusion and conduction in the material.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Zongying Han, Hui Dong, Yanru Yang, Hao Yu, Zhibin Yang
Summary: An efficient phase inversion-impregnation approach is developed to fabricate BaO-decorated Ni8 mol% YSZ anode-supported tubular solid oxide fuel cells (SOFCs) with anti-coking properties. BaO nanoislands are successfully introduced inside the Ni-YSZ anode, leading to higher peak power densities and improved stability in methane fuel. Density functional theory calculations suggest that the loading of BaO nanoislands facilitates carbon elimination by capturing and dissociating H2O molecules to generate OH.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Suresh Mamidi, Dan Na, Baeksang Yoon, Henu Sharma, Anil D. Pathak, Kisor Kumar Sahu, Dae Young Lee, Cheul-Ro Lee, Inseok Seo
Summary: Li-CO2 batteries, which utilize CO2 and have a high energy density, are hindered in practical applications due to slow kinetics and safety hazards. This study introduces a stable and highly conductive ceramic-based solid electrolyte and a metal-organic framework catalyst to improve the safety and performance of Li-CO2 batteries. The optimized Li-CO2 cell shows outstanding specific capacity and cycle life, and the post-cycling analysis reveals the degradation mechanism of the electrodes. First-principles calculations based on density functional theory are also performed to understand the interactions between the catalyst and the host electrode. This research demonstrates the potential of MOF cathode catalyst for stable operation in Li-CO2 batteries.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Ganghua Xiang, Zhihuan Qiu, Huilong Fei, Zhigang Liu, Shuangfeng Yin, Yuen Wu
Summary: In this study, a CeFeOx-supported Pt single atoms and subnanometric clusters catalyst was developed, which exhibits enhanced catalytic activity and stability for the preferential oxidation of CO in H2-rich stream through synergistic effect.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Dimitrios Chatzogiannakis, Marcus Fehse, Maria Angeles Cabanero, Natalia Romano, Ashley Black, Damien Saurel, M. Rosa Palacin, Montse Casas-Cabanas
Summary: By coupling electrochemical testing to operando synchrotron based X-ray absorption and powder diffraction experiments, blended positive electrodes consisting of LiMn2O4 spinel (LMO) and layered LiNi0.5Mn0.3Co0.2O2 (NMC) were studied to understand their redox mechanism. It was found that blending NMC with LMO can enhance energy density at high rates, with the blend containing 25% LMO showing the best performance. Testing with a special electrochemical setup revealed that the effective current load on each blend component can vary significantly from the nominal rate and also changes with SoC. Operando studies allowed monitoring of the oxidation state evolution and changes in crystal structure, in line with the expected behavior of individual components considering their electrochemical current loads.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Chiara Cementon, Daniel Dewar, Thrinathreddy Ramireddy, Michael Brennan, Alexey M. Glushenkov
Summary: This Perspective discusses the specific power and power density of lithium-ion capacitors, highlighting the fact that their power characteristics are often underestimated. Through analysis, it is found that lithium-ion capacitors can usually achieve power densities superior to electrochemical supercapacitors, making them excellent alternatives to supercapacitors.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Weihao Wang, Hao Yu, Li Ma, Youquan Zhang, Yuejiao Chen, Libao Chen, Guichao Kuang, Liangjun Zhou, Weifeng Wei
Summary: This study achieved an improved electrolyte with excellent low-temperature and high-voltage performance by regulating the Li+ solvation structure and highly concentrating it. The electrolyte exhibited outstanding oxidation potential and high ionic conductivity under low temperature and high voltage conditions, providing a promising approach for the practical application of high-voltage LIBs.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Martin Bures, Dan Gotz, Jiri Charvat, Milos Svoboda, Jaromir Pocedic, Juraj Kosek, Alexandr Zubov, Petr Mazur
Summary: Vanadium redox flow battery is a promising energy storage solution with long-term durability, non-flammability, and high overall efficiency. Researchers have developed a mathematical model to simulate the charge-discharge cycling of the battery, and found that hydraulic connection of electrolyte tanks is the most effective strategy to reduce capacity losses, achieving a 69% reduction.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
M. Rodriguez-Gomez, J. Campo, A. Orera, F. de La Fuente, J. Valenciano, H. Fricke, D. S. Hussey, Y. Chen, D. Yu, K. An, A. Larrea
Summary: In this study, we analysed the operando performance of industrial lead cells using neutron diffraction experiments. The experiments revealed the evolution of different phases in the positive electrode, showed significant inhomogeneity of phase distribution inside the electrode, and estimated the energy efficiency of the cells.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Jiawei Liu, Chenpeng Wang, Yue Yao, Hao Ye, Yinglong Liu, Yingli Liu, Xiaoru Xu, Zhicong Chen, Huazheng Yang, Gang Wu, Libin Lei, Chao Wang, Bo Liang
Summary: The study focuses on utilizing double conductive Ni-pads as anode collectors in micro-tubular solid oxide fuel cells. The simulation results show excellent performance and stability of DCNPs, and also highlight the potential applications in various fields.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yang Wang, Kangjie Zhou, Lang Cui, Jiabing Mei, Shengnan Li, Le Li, Wei Fan, Longsheng Zhang, Tianxi Liu
Summary: This study presents a polyimide sandwiched separator (s-PIF) for improving the cycling stability of Li-metal batteries. The s-PIF separator exhibits superior mechanical property, electrolyte adsorption/retention and ion conductivity, and enables dendrite-free Li plating/stripping process.
JOURNAL OF POWER SOURCES
(2024)