Article
Chemistry, Physical
Guillaume Jeanmonod, Stefan Diethelm, Jan Van Herle
Summary: The effects of HCl on the Ni-YSZ electrode of a solid oxide electrolysis cell operated in co-electrolysis mode were investigated through short-term experiments and a durability test. Exposure to HCl led to significant degradation, with resistance associated with charge-transfer processes increasing. Prolonged exposure caused a >10-fold degradation due to polarization resistance increases, highlighting the importance of extended poisoning tests.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Hirofumi Sumi, Hiroyuki Shimada, Konosuke Watanabe, Yuki Yamaguchi, Katsuhiro Nomura, Yasunobu Mizutani, Yuji Okuyama
Summary: This study investigates the effect of polarization resistances on current leakage and the distribution of relaxation times (DRT) analysis of electrochemical impedance spectra (EIS) for solid oxide cells (SOCs) with GDC electrolyte and protonic ceramic cells (PCCs) with BZYb electrolyte. The results show that the polarization resistances increase with increasing current density in SOC with GDC electrolyte, but exhibit the opposite tendency in PCC with BZYb electrolyte. This suggests that the effect of current leakage on polarization resistance is related to the conductivity of the electrolyte.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Thermodynamics
Haolong Li, Wei Wei, Fengxia Liu, Xiaofei Xu, Zhiyi Li, Zhijun Liu
Summary: The translation introduces the reliability and durability issues in the industrial applications of Solid Oxide Fuel Cells (SOFCs) and emphasizes the importance of understanding the internal operation mechanism of SOFC for long-term stability.
Article
Chemistry, Physical
Yatir Sadia, Stephen J. Skinner
Summary: Solid oxide fuel cells are a promising alternative to fossil-fuel based energy. Improving the performance of mixed ionic-electronic conducting cathodes at lower temperatures is a major challenge. This study focuses on a cathode based on La2NiO4 with Sr and Mn replacements, and uses electrochemical impedance spectroscopy and distribution of relaxation time analysis to identify and study different processes. Three processes – oxygen diffusion, oxygen surface exchange and charge transfer, and oxygen transfer through the electrode/electrolyte interface – were identified and analyzed.
SOLID STATE IONICS
(2023)
Article
Chemistry, Analytical
Jia Wang, Qiu-An Huang, Weiheng Li, Juan Wang, Yuxuan Bai, Yufeng Zhao, Xifei Li, Jiujun Zhang
Summary: EIS is an important diagnostic tool, but identifying pseudo peaks decoded by the DRT/DDC method remains a challenge. This study presents new insights from the perspective of symmetry, categorizing pseudo peaks into three types and quantitatively evaluating the decoded peaks. The solution to pseudo peaks decoded by the DRT/DDC method was validated through simulated impedance spectra.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Physical
Michael Braig, Roswitha Zeis
Summary: Polybenzimidazole-based electrochemical hydrogen pumps (EHPs) can separate hydrogen from gas mixtures at low cell overpotential. They have robustness towards catalyst poisoning by common impurities in steam reformate and can operate at temperatures up to 180 degrees C. The physico-chemical processes in EHPs supplied with H2 contaminated with N2, CO2, and CO were investigated using electrochemical impedance spectroscopy (EIS) and distribution of relaxation times (DRT) analysis. Five different processes were identified in the DRT spectrum, including proton transport, hydrogen evolution and oxidation reactions, mass transport in the anode gas diffusion electrode, and movement of phosphoric acid anions.
JOURNAL OF POWER SOURCES
(2023)
Article
Electrochemistry
Jihao Zhang, Libin Lei, Hangyue Li, Fanglin Chen, Minfang Han
Summary: In this study, a systematic and practical approach was utilized to investigate the elementary reaction processes and rate-limiting steps of redox-stable electrodes in symmetrical solid oxide fuel cells, with the application of electrochemical impedance spectroscopy technology. The results showed that the rate-limiting steps of the cathode are associated with the formation of adsorbed oxygen ions and the combination of oxygen ions and oxygen vacancies, while the rate-limiting steps of the anode are attributed to the processes of hydrogen dissociated adsorption and steam desorption.
ELECTROCHIMICA ACTA
(2021)
Article
Energy & Fuels
Arianna Baldinelli, Antunes Staffolani, Francesco Nobili, Linda Barelli
Summary: Energy storage systems are crucial for achieving a net-zero carbon society. Solid Oxide Cells, as a type of electrochemical energy conversion technology, can store renewable electricity in a chemical energy vector. However, frequent switching between fuel cell and electrolyser modes may lead to reduced efficiency. This study analyzes the impact of process variables on the performance of Solid Oxide Cells.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Davood Peyrow Hedayati, Gita Singh, Michael Kucher, Tony D. Keene, Robert Boehm
Summary: This study aims to improve the performance of solid-state supercapacitors (SSCs) by simulating their impedance using a defined equivalent circuit (EC) model. Two models, a mathematical model and a physicochemical model, were used and the impedance was measured using electrochemical impedance spectroscopy (EIS). The physicochemical model showed higher approximation ability due to its more complex circuit design, but also required more modeling and optimization effort.
Article
Chemistry, Analytical
Arsalan Zare, Hirad Salari, Alireza Babaei, Hamid Abdoli, Hamed Aslannejad
Summary: The electrochemical characteristics of the SFM/GDC air electrode were studied, and it was found that the SFM/GDC composite electrode sintered at 1050 degrees C exhibited the lowest polarization resistance at 800 degrees C. The distribution of relaxation time (DRT) technique was used to identify three peaks, and an LRΩ(QR(H))G equivalent circuit model was proposed. The results showed that the surface exchange kinetics of the SFM/GDC composite electrode can be improved at higher temperatures without surface modification.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Computer Science, Software Engineering
Emanuele Buchicchio, Alessio De Angelis, Francesco Santoni, Paolo Carbone
Summary: This paper presents the software tool EasyEIS for performing electrochemical impedance spectroscopy (EIS) on lithium-ion batteries. It validates the results obtained from a custom impedance measurement system and provides a software-based sinusoidal waveform generator function.
Article
Electrochemistry
Rosario Suarez Anzorena, Lucia M. Toscani, Susana A. Larrondo
Summary: In this study, Ce0.9Zr0.1-xSmxO2-delta (0 <= x <= 0.1) mixed oxides were synthesized for the first time via the citrate-nitrate self-combustion method and studied as metal-free anode materials for Intermediate Temperature Solid Oxide Fuel Cells (IT-SOFCs). The effects of Sm2O3 incorporation on the electrocatalytic properties of Ce0.9Zr0.1O2 anodes were investigated under wet H-2 and wet CH4 conditions. A new anode material with optimized composition (Ce0.9Zr0.04Sm0.06O2-delta) was obtained, exhibiting extremely low polarization resistance without the need for a metallic phase.
ELECTROCHIMICA ACTA
(2023)
Article
Electrochemistry
Luca Bottoni, Hamideh Darjazi, Leonardo Sbrascini, Antunes Staffolani, Serena Gabrielli, Genny Pastore, Alessia Tombesi, Francesco Nobili
Summary: Corncobs are used as raw materials for the preparation of hard carbon and synthesis of carboxymethyl cellulose (CMC) binder in sodium-ion batteries (SIBs). The corncob-derived electrodes exhibit high discharge capacity, good capacity retention, and promising rate capability. The study also provides new insights into the sodium storage behavior of Hard Carbons, revealing a capacitive process in the sloping voltage region and a diffusion-controlled intercalation in the low-voltage plateau.
Article
Chemistry, Physical
Xinhua Zhu, Noel Hallemans, Benny Wouters, Raf Claessens, John Lataire, Annick Hubin
Summary: This work investigates the electrochemical impedance spectroscopy (EIS) characteristics of lithium-ion batteries (LIBs) under practical usage conditions. The validity of the EIS data is quantitatively assessed based on the theoretical framework of operando odd random phase EIS (ORP-EIS). The results reveal the continuous evolution of charge-transfer phenomena along changes of state-of-charge (SoC) and the extracted parameters exhibit consistent behavior under various charging conditions. The operando ORP-EIS provides unique physical insights and could be a powerful technique for monitoring the state-of-charge (SoC) of batteries during fast charging.
JOURNAL OF POWER SOURCES
(2022)
Article
Electrochemistry
Emanuele Quattrocchi, Ting Hei Wan, Alessio Belotti, Dohyung Kim, Simona Pepe, Sergei Kalinin, Mahshid Ahmadi, Francesco Ciucci
Summary: Electrochemical impedance spectroscopy (EIS) is widely used to study electrochemical systems, but interpreting the data is challenging. The distribution of relaxation times (DRT) has emerged as a complementary approach to resolve these issues. A novel deconvolution method based on deep neural networks (DNNs) has been proposed to analyze multidimensional EIS spectra effectively.
ELECTROCHIMICA ACTA
(2021)
Article
Thermodynamics
Juliana Q. Albarelli, Sandro Onorati, Priscilla Caliandro, Emanuela Peduzzi, M. Angela A. Meireles, Francois Marechal, Adriano V. Ensinas
Article
Electrochemistry
P. Caliandro, S. Diethelm, J. Van Herle
Article
Thermodynamics
Priscilla Caliandro, Laurence Tock, Adriano V. Ensinas, Francois Marechal
ENERGY CONVERSION AND MANAGEMENT
(2014)
Article
Engineering, Aerospace
Valerio Marciello, Mario Di Stasio, Manuela Ruocco, Vittorio Trifari, Fabrizio Nicolosi, Markus Meindl, Bruno Lemoine, Priscilla Caliandro
Summary: This study aims to support the development of a technology roadmap for sustainable and competitive electric aircraft systems by considering the environmental sustainability of a 50-passenger hybrid-electric aircraft from a life-cycle perspective. The exploration of three major technology streams for energy storage, including batteries, fuel cells, and turbine internal combustion engine generators, was conducted to identify the most promising solutions for different time horizons. The results show a significant reduction in fuel consumption and emissions, with the potential for zero direct emissions by 2050.
Article
Energy & Fuels
D. Lauinger, P. Caliandro, J. Van Herle, D. Kuhn
JOURNAL OF ENERGY STORAGE
(2016)
Proceedings Paper
Engineering, Environmental
Juliana Q. Albarelli, Sandro Onorati, Priscilla Caliandro, Emanuela Peduzzi, Francois Marechal, Adriano V. Ensinas
PRES 2014, 17TH CONFERENCE ON PROCESS INTEGRATION, MODELLING AND OPTIMISATION FOR ENERGY SAVING AND POLLUTION REDUCTION, PTS 1-3
(2014)
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)