Article
Chemistry, Inorganic & Nuclear
Tianyuan Wang, Liang Lu, Chunwen Sun
Summary: A durable composite electrolyte membrane was prepared using oxygen vacancies to improve the degradation and safety of Li-O-2 batteries. The composite electrolyte demonstrated a wide electrochemical window, high ionic conductivity, and ionic transference number, resulting in long cycle stability and high coulombic efficiency.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Physical
A. A. A. da Silva, M. C. Steil, F. N. Tabuti, R. C. Rabelo-Neto, F. B. Noronha, L. Mattos, F. C. Fonseca
Summary: Research showed that ceria dopant has a significant impact on the stability and catalytic activity of direct ethanol solid oxide fuel cells, demonstrating stability in ethanol steam reforming. The Ni/doped-ceria anodic catalytic layer can provide the steam needed for internal reforming, resulting in stable fuel cell operation.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Martinus Dewa, Mohamed A. Elharati, A. Mohammed Hussain, Yohei Miura, Dong Song, Yosuke Fukuyama, Yoshihisa Furuya, Nilesh Dale, Xianghui Zhang, Oscar G. Marin-Flores, Di Wu, M. Grant Norton, Su Ha
Summary: In this study, a Rhodium-Ceria-Zirconia (Rh/CZ) internal reforming catalyst layer was introduced to a high-performance metal-supported solid oxide fuel cell (MS-SOFC). The catalyst layer improved the performance and stability of the ethanol fuel cell by enhancing internal reforming activity.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Physical
Leticia P. R. Moraes, Marina Machado, Lays N. Rodrigues, Ziqi Sun, Debora Marani, Fabio C. Fonseca
Summary: A novel method for synthesizing two-dimensional gadolinium-doped cerium oxide nanosheets as interdiffusion barrier layers in solid oxide fuel cells is developed. The shape of the nanosheets is controlled using a low-cost wet-chemical method, allowing for the fabrication of a dense barrier layer. The electrochemical properties of the fuel cells confirm the efficiency of the cerium oxide nanosheets in preventing the formation of resistive phases at the interface.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Chemical
Wenxuan Li, Xingxing Li, Chen Wang, Yansheng Gong, Rui Wang, Huanwen Wang, Jun Jin, Ling Zhao, Beibei He
Summary: Reasonable design of perovskite electrodes via surface engineering is an attractive strategy for advanced symmetrical solid oxide fuel cells (S-SOFCs) to achieve high activity and good durability. This study demonstrates that decorating PrBaMn0.5Fe1.5O5+delta perovskite with uniformly distributed iron doped CeO2 nanoparticles using atomic layer deposition (ALD) enhances both oxygen reduction and fuel oxidation kinetics, resulting in high electrochemical performance.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Physical
Zhenxin Lin, Kai Zhao, Gang Cheng, Shuozhen Hu, Min Chen, Jun Li, Dongchu Chen, Qing Xu, Menglei Chang, Ogenko Volodymyr
Summary: A novel NiMo-Yttira-stabilized zirconia (YSZ) catalyst-layer supported tubular single cell is developed for solid oxide fuel cells running on methane. The NiMo-YSZ layer shows excellent reforming performance with high methane conversion, H2 and CO yield. The single cell demonstrates good electrochemical performance and stability, making it a promising option for direct operation in CH4/Air environments.
JOURNAL OF POWER SOURCES
(2021)
Article
Physics, Condensed Matter
Giulia Righi, Sara Benedetti, Rita Magri
Summary: Using the density functional theory (DFT), the effects of Ag and Cu atoms substitution in ceria (CeO2) on the ceria lattice, the oxidation states of metal atoms, and the oxygen vacancy formation energies have been investigated. It has been found that noble metal atoms prefer to be located in the cation layer closer to the surface, and Cu causes a strong lattice distortion contrary to Ag. Ag causes stronger reduction (oxygen loss) than Cu, and Ag atoms tend towards +1 oxidation state, while Cu tends to stay in the +2 oxidation state.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2022)
Article
Engineering, Environmental
Tian Gan, Hexuan Song, Xinqiang Fan, Ye Liu, Shouqing Liu, Yicheng Zhao, Yongdan Li
Summary: A Sn-doped Ce0.8Sm0.2O2_delta (SDC) supported Sn-Ni alloy anode was designed and prepared through a dual-modification strategy. The substitution of Sn improved the mobility of lattice oxygen in SDC, and Sn exsolves from the oxide phase to form intermetallic compounds with Ni after reduction. The composite anode showed unprecedented activity in the electrochemical oxidation of H2 and CH3OH, with high power densities achieved using these fuels. This work opens a new path for the design of high-performance SOFC anodes.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Hyong June Kim, Min Jong Kil, Jemin Lee, Byung Chan Yang, Dohyun Go, Yonghyun Lim, Young-Beom Kim, Jihwan An
Summary: The study introduces a gradient cermet anode for DM-SOFCs operated at 450 degrees C using co-sputtering method, which shows higher voltage and power density, better thermal stability, and improved coking resistance compared to homogeneous anode. The combination of high triple phase boundary density and percolating ceria network in the gradient cermet anode contributes to these enhancements in cell performance.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Panpan Zhang, Ze Lei, Xing Zhang, Zhibin Yang, Yihan Ling, Suping Peng
Summary: This study investigates the performance of reduced La0.4Sr0.6Co0.2Fe0.7Nb0.1O3-delta (LSCFN) with anchored Co-Fe nanoparticles as an electrode in low concentration ethanol for power generation from ethanol by solid oxide fuel cells (SOFCs). The results show that the LSCFN electrode exhibits considerable peak power density and excellent durability. Furthermore, when used as a catalyst layer, the LSCFN significantly improves the coking resistance and stability of the Ni-YSZ anode-supported cell in ethanol fuel.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
Hojae Lee, Junghum Park, Yonghyun Lim, Young-Beom Kim
Summary: The study develops a method for fabricating a dense gadolinia-doped ceria (GDC) functional layer using a sacrificial bismuth oxide, Bi2O3, sintering aid layer above the GDC layer, even under constrained sintering conditions. This approach improves the solid oxide fuel cell performance significantly.
CERAMICS INTERNATIONAL
(2022)
Article
Energy & Fuels
Panpan Zhang, Liang Hu, Bin Zhao, Ze Lei, Ben Ge, Zhibin Yang, Xinfang Jin, Suping Peng
Summary: In this study, the protective catalyst layer of LSCFN with anchored nanoscale Co-Fe alloy was evaluated for ethanol-fueled SOFCs. The addition of the LSCFN catalyst layer can protect the fuel cells from thermal-mechanical stress-induced cracking and severe coking in ethanol fuel.
Article
Chemistry, Physical
Shuqian Xie, Jinbing Shu, Hui Huang, Junhong Li, Ruirui Yue, Jingkun Xu
Summary: Modulating the surface and interface electronic structure of noble metals is a hot topic in electrocatalysis to improve electrocatalytic performance. In this study, a heterogeneous catalyst (PdCu/N-Ti3C2Tx) based on well-dispersed PdCu nanoalloy and N-doped Ti3C2Tx MXene support was prepared. The optimized composition of Pd1Cu1/N-Ti3C2Tx showed higher mass activity, specific activity, and intrinsic activity for ethanol oxidation reaction compared to other catalysts. The improved performance can be attributed to the modified surface electronic features of Pd and the metal-carrier effect between PdCu nanoalloy and N-Ti3C2Tx heterogeneous interface.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Yue Wang, Qing Shen, Yongcheng Tong, Zhongliang Zhan
Summary: Tailoring the surface chemistry of oxides is effective in adjusting their catalytic behavior. In this study, nickel-doped cerium oxide nanorods were synthesized and evaluated as anode catalysts for solid oxide fuel cells. The results show that the incorporation of nickel significantly enhances the catalytic activity, which is attributed to the presence of nanoparticles and increased surface active oxygen.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Jincheng Wang, Kai Zhao, Jishi Zhao, Jun Li, Yihui Liu, Dongchu Chen, Qing Xu, Min Chen
Summary: A catalyst-layer supported single cell is developed for solid oxide fuel cells, which can efficiently catalyze the partial oxidation of isooctane and improve the electrochemical performance and stability. In-situ catalyst regeneration by redox treatment can eliminate carbon deposits. This design achieves good results in in-situ catalyst regeneration.
Article
Energy & Fuels
Alejandro Calderon, Camila Barreneche, Karla Hernandez-Valle, Esther Galindo, Merce Segarra, A. Ines Fernandez
Article
Energy & Fuels
Anabel Palacios, Alejandro Calderon, Camila Barreneche, Joan Bertomeu, Merce Segarra, A. Ines Fernandez
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2019)
Article
Chemistry, Multidisciplinary
Jaume Calvo-de la Rosa, Merce Segarra
Article
Green & Sustainable Science & Technology
Julian Fernando Ordonez Duran, Josep M. Chimenos, Merce Segarra, Paola Andrea de Antonio Boadal, Joao Carlos Espindola Ferreira
CLEAN TECHNOLOGIES AND ENVIRONMENTAL POLICY
(2020)
Article
Green & Sustainable Science & Technology
Dieter Boer, Merce Segarra, A. Ines Fernandez, Manel Valles, Carles Mateu, Luisa F. Cabeza
Article
Chemistry, Inorganic & Nuclear
Jaume Calvo-de la Rosa, Merce Segarra Rubi
INORGANIC CHEMISTRY
(2020)
Article
Energy & Fuels
Alejandro Calderon, Camila Barreneche, A. Ines Fernandez, Merce Segarra
Summary: The durability and reliability of solid particles in concentrating solar power tower plants are crucial for project viability. The study compares the thermal aging and cycling effects on two solid particle materials - silicon carbide (SiC) and CarboHSP (R) 30/60, with SiC being more affected by thermal cycling and CarboHSP (R) by temperature aging.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2021)
Article
Materials Science, Ceramics
M. Morales, M. A. Laguna-Bercero, E. Jimenez-Pique
Summary: This study investigates the processing of the anode support and the anode deactivation caused by carbon deposition in Direct Methane Solid Oxide Fuel Cells (SOFCs) operated under catalytic partial oxidation (CPOX) conditions. Anode-supported SOFCs based on gadolinium-doped ceria (GDC) electrolyte and NiO-GDC anode support were fabricated by the gel-casting method. The suitable support material was found to be 550 +/- 50 μm thick with 10 wt% pore former, and it showed good performance under stoichiometric conditions of CPOX. The best electrochemical stability was achieved at a CH4/O-2 ratio of 2.5, with no carbon deposition and reduced nickel re-oxidation.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Miguel Morales, Sandra Gordon, Oscar Fernandez-Arana, Fernando Garcia-Marro, Antonio Mateo, Luis Llanes, Gemma Fargas
Summary: This study evaluated the compatibility of two different duplex stainless steels with a molten salt mixture at high temperatures. The results showed that DS2507 exhibited better corrosion resistance than DS2205, with thinner and more compact oxide layers that adhered better to the metallic substrate.
Article
Materials Science, Multidisciplinary
Miguel Morales, Laura Cabezas, Manuel Castro-Alloca, Gemma Fargas, Luis Llanes, Antonio Mateo
Summary: The corrosion behavior of three stainless steels in a molten eutectic ternary salt mixture was studied, and it was found that super duplex stainless steel 2507 showed the best corrosion resistance.
Article
Materials Science, Ceramics
Andrea Bartoletti, Alex Sangiorgi, Angela Gondolini, Elisa Mercadelli, Simone Casadio, Sandra Garcia-Gonzalez, Miguel Morales, Emilio Jimenez-Pique, Alessandra Sanson
Summary: Proton-conducting ceramic membranes with asymmetric configuration have been increasingly studied due to their 100% H2 selectivity, high thermo-chemical stability, and lower cost compared to Pd-based membranes. In this study, porous BaCe0.65Zr0.20Y0.15O3-delta (BCZY) supports were fabricated for the first time using UV-assisted micro-extrusion. Different preparation methods of BCZY-based inks were evaluated to obtain eco-friendly formulations with high solid loading (>40 vol%). Printable inks with optimal shear thinning behavior were successfully extruded, allowing for deposition of up to three stacked layers without defects.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
M. Morales, S. Garcia-Gonzalez, J. Rieux, E. Jimenez-Pique
Summary: An effective strategy to reduce cathode polarization in a SOFC is to enlarge the cathode-electrolyte interface by corrugating the surface of the electrolyte, and this study analyzes the microstructural and phase changes as well as collateral damage caused by laser machining of the 8YSZ electrolyte surface. The results show the presence of a limited heat affected zone with microcracking and directional recrystallization, larger in 8YSZ than in 3Y-TZP, but no significant changes in the mechanical response and chemical composition of the machined surface.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Crystallography
Miguel Morales, Sandra Garcia-Gonzalez, Michaela Plch, Dario Montinaro, Emilio Jimenez-Pique
Summary: Laser machining of NiO-YSZ composite in SOFCs can enlarge the electrode-electrolyte interface and improve cell performance, but it can also cause thermal damage. This study evaluated the microstructure changes and collateral damage caused by laser machining on sintered NiO-YSZ. By varying laser parameters, laser patterns were processed on sintered NiO-YSZ, revealing a limited heat-affected zone with microcracking, porosity reduction, and recrystallization. Chemical composition, phase transformation, and mechanical properties changes were minimal at the machined surface.
Article
Chemistry, Physical
Miguel Morales, Miguel Angel Laguna-Bercero, Emilio Jimenez-Pique
Summary: In this study, the catalytic properties of La0.6Sr0.4CoO3-δ (LSC) perovskite were investigated for hydrogen-rich production from methanol via steam reforming and oxidative steam reforming. The LSC catalyst was synthesized using the citrate sol-gel method and characterized using various analytical techniques. The results showed that the catalyst exhibited improved methanol conversion and H-2 selectivity when subjected to repeated redox cycles, and could be regenerated to its initial perovskite structure with specific thermal treatment, minimizing catalyst degradation.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Education & Educational Research
Lidon Moliner, Luis Cabedo, Marta Royo, Jose Gamez-Perez, Pablo Lopez-Crespo, Merce Segarra, Teresa Guraya
EUROPEAN JOURNAL OF ENGINEERING EDUCATION
(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)