Review
Energy & Fuels
Ersan Gurbuz, Elisa Grepin, Armelle Ringuede, Virginie Lair, Michel Cassir
Summary: Molten hydroxides are interesting electrolytes due to their low melting point and high conductivity, playing a significant role in high-temperature electrochemical devices. A thorough understanding of their behavior can lead to significant improvements and optimization of fuel cells and electrolyzers.
FRONTIERS IN ENERGY RESEARCH
(2021)
Article
Energy & Fuels
Muhammad Ahsan, Peifang Fu, Kang Bie, Muneeb Irshad, Yang Liu, Tianyao Xu
Summary: To improve the power density of MC-DCFC, a composite electrolyte of ceria-carbonate and ceria-coal/carbon anode are utilized. The addition of ceria in the electrolyte leads to a decrease in ohmic resistance and facilitates CO32- ionic transportation. Bituminous coal and graphite powders show the highest peak power density and current density among all the carbon fuels at 700 degrees C. The incorporation of ceria in graphite fuel reduces the activation energy and enhances the reactivity, resulting in a higher power density at 600 degrees C.
Article
Chemistry, Multidisciplinary
Xin Liu, Zi-Yu Liu, Yang-Hai Zheng, Yong-De Yan, Wen-Da Xu, Yun Xue, Yue-Lin Wang, Fu-Qiu Ma, Kai Zhu, Yu-Sheng Yang
Summary: The molten salt oxidation (MSO) method using ternary carbonate (Li2CO3-Na2CO3-K2CO3) as the molten salt system and mixed resin (MR) as the oxidation target can achieve a 99.99% oxidation efficiency for MR. The molten carbonate also has a good absorption capacity for harmful gases such as SO2 and can successfully convert them into sulfate compounds. This work has significant implications for reducing the potential environmental impact of radioactive waste resin.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Rui Yu, Junxiang Xiang, Kaifa Du, Bowen Deng, Di Chen, Huayi Yin, Ze Liu, Dihua Wang
Summary: A new molten salt electrolysis method is reported for growing carbon nanocoils without the use of metal catalysts. The alkalinity of the molten carbonate was found to selectively influence the growth of CNCs, with the electrolytic CNCs exhibiting significantly higher mechanical strength compared to traditional methods.
Article
Chemistry, Physical
Jae-Hwan Hyun, Min-Jeong Yi, Hyejin Jung, Si-Hwan Lee, Ji Hyun Um, Seung-Ho Yu
Summary: This study explores the processes that significantly impact Coulombic efficiency and overpotential, and provides a comprehensive understanding of these factors from the perspective of time, offering new insights into the performance of Li metal batteries.
ENERGY STORAGE MATERIALS
(2023)
Article
Chemistry, Physical
Yue Liu, Qintao Sun, Peiping Yu, Bingyun Ma, Hao Yang, Jiayi Zhang, Miao Xie, Tao Cheng
Summary: Developing advanced electrolytes is crucial for stabilizing the lithium metal anode, with the concept of localized high-concentration electrolyte emerging as an efficient strategy. The underlying reaction mechanism of SEI formation in LHCEs with the Li anode is still unclear, but simulations have provided insights into the basic chemical mechanism of SEI formation.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Physical
Yang Li, Yong Qian, Jie Zhou, Ning Lin, Yitai Qian
Summary: A molten-salt-induced thermochemical prelithiation strategy was utilized to enhance the initial Coulombic efficiency (ICE) of SiOx anode by regulating the Si/O ratio. The prelithiation degree can be adjusted by varying the coating amount of LiNH2 layer, leading to significant improvement in ICE. This approach shows potential for improving energy density and reducing interface impedance in lithium-ion batteries.
Article
Materials Science, Ceramics
Qinghua Zhang, Xiaoli Xi, Liwen Zhang, Zuoren Nie
Summary: This paper presents a novel method for rapid reconstruction of tungsten carbide (WC) using Na2CO3-containing molten salt. Experimental results show that the addition of Na2CO3 significantly enhances the dissolution efficiency of WC and transforms tungsten (W) into WC through a reduction process.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
K. Cwieka, A. Lysik, T. Wejrzanowski, T. Norby, W. Xing
Summary: This paper demonstrates the influence of modifications in microstructure and chemical composition on the electrochemical behavior of cathodes for molten carbonate fuel cells (MCFCs). By designing new three-layer cathode structures, combining porous silver, nickel oxide, and nickel foam layers, it is possible to enhance cell performance, decrease internal resistance, and improve charge transfer and mass transport efficiency.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Multidisciplinary
Zeyu Fan, Wei Xiao
Summary: Utilizing electrochemical splitting of methane in molten salts at 500 degrees C for hydrogen production offers an energy saving, emission-free and water-free approach. Compared to methane steam reforming, this method has lower equivalent carbon emissions and energy input.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Benrong Hai, Changsheng Liu
Summary: The use of reduced graphene oxide (rGO) as a skeleton improves the performance of bismuth oxide (Bi2O3) anode in sodium-ion batteries. The new Bi2O3@rGO heterostructure demonstrates high reversibility and stability, outperforming pure Bi2O3. This improvement can be attributed to the dual function of rGO in supporting Bi2O3 nanoparticles and providing conductive pathways.
Article
Electrochemistry
Charles Cougnon
Summary: This study investigates the charge hysteresis in electrochemical capacitors at full charge voltage, and proposes a method to define the operating potential window (OPW) and correct the faradaic fraction sensitivity to the initial potential.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Physical
Bishnu P. Thapaliya, Alexander S. Ivanov, Hsin-Yun Chao, Meghan Lamm, Miaofang Chi, Harry M. Meyer III, Xiao-Guang Sun, Tolga Aytug, Sheng Dai, Shannon M. Mahurin
Summary: The efficient conversion of CO2 into value-added graphite is a potential strategy to mitigate climate effects caused by CO2 emissions. In this study, CO2 was electrochemically converted into highly crystalline nano-graphite with controlled microstructure in a carbonate molten salt at 780 degrees C. The CO2-converted graphite exhibited high reversible capacity, long cycle life, and excellent rate capability when used as an anode material for LIBs.
Article
Chemistry, Physical
Arunavo Chakraborty, Richard Bock, Roger Green, Kyle Luker, Gabriel Menard, Lior Sepunaru
Summary: This study demonstrates the feasibility of replacing ion-selective membranes with an immiscible electrolyte solution in redox flow batteries, which eliminates self-discharge caused by direct contact between the anolyte and catholyte in biphasic cells.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Gang Wen, Liang Tan, Xuexia Lan, Hanyin Zhang, Renzong Hu, Bin Yuan, Jun Liu, Min Zhu
Summary: Modifying the solid electrolyte interface (SEI) with materials like Li2CO3 can enhance the interfacial stability and lithium storage reversibility of SnO2, resulting in composite anodes with high Coulombic efficiencies, large capacities, and long cycle lives. This strategy can also greatly promote the cycling stability of other alloying-type and conversion reaction anodes, offering a universal and simple approach for achieving highly reversible and stable electrodes for large-capacity lithium storage.
SCIENCE CHINA-MATERIALS
(2021)
Article
Energy & Fuels
Hirotatsu Watanabe, Tomoaki Furuyama, Ken Okazaki
Article
Energy & Fuels
Hirotatsu Watanabe, Akihiro Kimura, Ken Okazaki
Article
Thermodynamics
Hirotatsu Watanabe, Santosh J. Shanbhogue, Soufien Taamallah, Nadim Walid Chakroun, Ahmed F. Ghoniem
COMBUSTION AND FLAME
(2016)
Article
Energy & Fuels
Hirotatsu Watanabe, Yutaka Shoji, Takuma Yamagaki, Jun Hayashi, Fumiteru Akamatsu, Ken Okazaki
Article
Engineering, Chemical
Hirotatsu Watanabe, Tomoaki Furuyama, Ken Okazaki
JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
(2016)
Article
Chemistry, Physical
Hirotatsu Watanabe, Daisuke Umehara, Katsunori Hanamura
JOURNAL OF POWER SOURCES
(2016)
Article
Thermodynamics
Soufien Taamallah, Nadim W. Chakroun, Hirotatsu Watanabe, Santosh J. Shanbhogue, Ahmed F. Ghoniem
PROCEEDINGS OF THE COMBUSTION INSTITUTE
(2017)
Article
Energy & Fuels
Hirotatsu Watanabe
Article
Electrochemistry
Hirotatsu Watanabe, Minori Nakanouchi, Katsunori Hanamura
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2018)
Article
Chemistry, Physical
Hirotatsu Watanabe, Ryota Okino, Katsunori Hanamura
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2019)
Article
Energy & Fuels
Hirotatsu Watanabe, Takashi Shimada, Minori Nakanouchi, Katsunori Hanamura
Article
Chemistry, Physical
Hirotatsu Watanabe, Teppei Ogura
Summary: The carbon deposition mechanisms at the Ni/YSZ interface were investigated through observation and calculation, revealing the influence of vacancy configuration and CH-CH bonding barrier on the occurrence and stability of carbon deposition.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Proceedings Paper
Electrochemistry
H. Watanabe, M. Kanie, M. Chanthanumataporn, T. Nagasawa, K. Hanamura
SOLID OXIDE FUEL CELLS 15 (SOFC-XV)
(2017)
Proceedings Paper
Electrochemistry
H. Watanabe, D. Umehara
MOLTEN SALTS AND IONIC LIQUIDS 20
(2016)
Proceedings Paper
Engineering, Mechanical
Hirotatsu Watanabe, Santosh J. Shanbhogue, Ahmed F. Ghoniem
ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2015, VOL 4B
(2015)
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)