Article
Energy & Fuels
Guvenc Umur Alpaydin, Gizem Nur Bulanik Durmus, C. Ozgur Colpan, Yilser Devrim
Summary: In this study, a mathematical model of a direct dimethyl ether fuel cell (DDMEFC) was developed to investigate the impact of operating conditions on voltage losses and cell performance. Experimental data was used to determine the values of modeling parameters. The effects of synthesized catalysts and operating conditions on cell performance were discussed by comparing activation polarization, ohmic polarization, and polarization curves.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Applied
Medhanie Gebremedhin Gebru, Radhey Shyam Yadav, Hanan Teller, Haya Kornweitz, Palaniappan Subramanian, Alex Schechter
Summary: In this study, the oxidation of a mixture of dimethyl ether (DME) and methyl formate (MF) was investigated using a multi-metallic alloy catalyst, Pt3Pd3Sn2/C, in an aqueous electrochemical cell and a vapor-fed polymer electrolyte membrane fuel cell (PEMFC). The cooperative effect of mixing these fuels was observed, with the current obtained during bulk oxidation of the mixture being higher than the summation of the currents provided by the individual fuels. Density functional theory (DFT) calculations confirmed that the dual-molecules had a lower adsorption energy, leading to greater utilization of specific catalytic sites. The fuel cell experiments showed that the DME + MF mixture-fed cell achieved a higher peak power density compared to cells fed with DME or MF alone.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Chemistry, Physical
Chi-Yeong Ahn, Sun Young Kang, Hyuck Jae Choi, Ok-Hee Kim, Yung-Eun Sung, Yong-Hun Cho
Summary: The degradation of electrodes in a polymer electrolyte membrane fuel cell (PEMFC) can lead to cell reversal, where a reverse voltage is generated when hydrogen supply is disrupted. Adding iridium oxide (IrO2) particles to the anode can prevent this phenomenon and improve the stability and lifespan of the fuel cell.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Electrochemistry
F. Kukk, S. Pylypko, E. Lust, G. Nurk
Summary: This study examines the effect of different thicknesses of hydrogen electrode active layer on the performance of reversible solid oxide cells. The results show that cells with an active layer thickness ranging from 7 to 16μm perform the best under specific operating conditions.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Electrochemistry
Heather A. Baroody, Erik Kjeang
Summary: A protocol is proposed to assess fuel cell performance degradation based on a vehicle drive cycle, calculating the impact of platinum degradation on voltage through various mechanisms, and demonstrating the effectiveness and predictive capability of the model.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
Xiao Yang, Minjian Ma, Chunming Xu, Rongzheng Ren, Jinshuo Qiao, Wang Sun, Kening Sun, Zhenhua Wang
Summary: HDCFCs have advantages in converting chemical energy from organic waste, biomass, and coal into clean energy, but are limited by sluggish anode reaction kinetics. This study proposes an effective design strategy for a Cu-doped SFCM anode, demonstrating improved catalytic activity and peak power density.
JOURNAL OF POWER SOURCES
(2022)
Review
Chemistry, Physical
Noelia Mota, Elena Millan Ordonez, Barbara Pawelec, Jose Luis G. Fierro, Rufino M. Navarro
Summary: This review presents the latest progress in the synthesis of bifunctional/hybrid catalytic systems for the CO2-to-DME process, discussing the challenges of combining metal and acid functionalities in the catalyst, and the different strategies employed to improve DME formation efficiency.
Article
Chemistry, Physical
Caroline Teixeira Rodrigues, Gabriela de Franca Lopes, Christian Goncalves Alonso, Luiz Mario de Matos Jorge, Paulo Roberto Paraiso
Summary: Studies on the integration of reforming systems with Fuel Cells are intriguing for energy production in remote areas. The development of multi-fuel processors that can utilize various fuels without modifying the unit is particularly interesting. This study modeled and simulated an Autonomous Fuel Cell (AFC) system with methanol and/or Dimethyl Ether Steam Reforming (SR) using Aspen Plus. The evaluation focused on process variables, operational conditions, and the need for additional processes.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Kang Xu, Feng Zhu, Mingyang Hou, Canan Li, Hua Zhang, Yu Chen
Summary: Coating the surface of a nickel-based anode with cerium oxide nanoparticles can activate and stabilize ammonia fuel, leading to improved efficiency and durability of solid oxide fuel cells.
Article
Chemistry, Physical
Kang Xu, Feng Zhu, Mingyang Hou, Canan Li, Hua Zhang, Yu Chen
Summary: This study reports on the surface activation and stabilization of a Ni-based cermet anode for efficient and durable operation on ammonia fuel. The surface coating of CeO2-delta nanoparticles significantly enhances the reaction activity and stability, leading to improved performance compared to bare anodes.
Article
Thermodynamics
Zunyan Hu, Liangfei Xu, Jianqiu Li, Qing Wang, Yangbin Shao, Xiaojing Chen, Wei Dai, Minggao Ouyang
Summary: The nonlinear, accelerated decline of fuel cells is difficult to detect early; corrosion leads to a decrease in the porosity of the catalyst layer, accelerating the decline in fuel cell performance.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Engineering, Environmental
Kamal M. S. Khalil, Walaa A. Elhamdy, Mohamed N. Goda, Abd El-Aziz A. Said
Summary: The study focused on the catalytic conversion of methanol to dimethyl ether using phosphorous-containing activated carbon (ACP) derived from orange peel and tungsten-loaded catalysts. The research found that the W-loaded catalysts exhibited improved catalytic performance compared to ACP support, attributed to enhanced structure and thermal stability.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Energy & Fuels
Kyu Min Lee, Jun Ho Jang, Mani Balamurugan, Jeong Eun Kim, Young In Jo, Ki Tae Nam
Summary: Electrochemical reduction of CO2 to produce fuel precursors and additives has traditionally been limited in product variety and overall efficiency. A recent study successfully utilized redox-neutral reactions to convert CO2 into dimethyl carbonate in methanol with high Faradaic efficiency, and expanded to diethyl carbonate. This approach shows promise in broadening the scope of products and improving efficiency through innovative design strategies.
Article
Engineering, Environmental
Ying Yang, Xiaofei Zhu, Caini Yi, Hang Yang, Xiaolong Hou, Xuan Liao, Changguo Chen, Danmei Yu, Xiaoyuan Zhou
Summary: NiFe-x binary alloy catalysts were prepared by one-step potentiostatic electrodeposition, and the effects of Fe introduction on the morphology, structure, and electrochemical properties were investigated. The results showed that the appropriate introduction of Fe could refine the size of the catalyst particles, increase effective catalytic active sites, and improve catalytic activity. It also changed the electron distribution of Ni, enhancing the adsorption to reactants and inhibiting hydrogen evolution reaction, leading to increased catalytic selectivity. When assembled with the NiFe-2 catalyst anode, the direct borohydride fuel cell achieved a peak power density of 540 mW cm-2 and an open circuit voltage of 1.87 V at 298 K. This study may provide new insights for the design and development of efficient noble metal-free anode catalysts for DBFC.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Kainakhone Pathoumthong, Putong Ratanamalaya, Sunun Limtrakul, Terdthai Vatanatham, Palghat A. Ramachandran
Summary: A two-phase model was developed to scale up bubbling fluidized bed reactors for dimethyl ether production. Correlations for the kinetic model and mass transfer coefficient were developed from experimental data. Scaling up from laboratory to industrial scale was carried out using three similarity criteria. The hydrodynamic criterion was found to be inadequate, while the criteria for performance and residence time yielded the same dimethyl ether yield in all scales. The two-phase models, combined with correlations for kinetic and mass transfer parameters, are useful for analyzing and scaling up laboratory and industrial-scale reactors.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Mi Guo, Liang Luo, Shulin Chen, Zhenzhen Wang, Pengjian Zuo, Zhenbo Wang
Summary: In this study, dual-modification of LiNi0.88Co0.09Al0.03O2 was achieved by LiBO2-coating and Mg-doping, aiming to stabilize its crystal structure and reduce its surface activity. The dual-modification effectively improved the discharge ability, rate capability, and cycling behavior of LiNi0.88Co0.09Al0.03O2. The co-modification cathode showed excellent prolonged cycling stability in cylindrical 18650 batteries at both room and high temperature.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Physical
Hai Liu, Yaqiong Su, Zhihui Liu, Hongyuan Chuai, Sheng Zhang, Xinbin Ma
Summary: In this study, ultrathin SnO2 nanosheets exposed with (001) facets were synthesized to achieve highly selective electrocatalytic CO2 reduction to formate. The introduction of Nafion/PTFE/SnO2 TPB porous structure significantly enhanced the single-pass carbon efficiency in 1 M KOH electrolyte. Engineering triple-phase boundaries and increasing active sites proved to be an effective approach for advanced CO2 electrolyzers.
Article
Nanoscience & Nanotechnology
Xiongzhi Yang, Jinzhu Jia, Linghao Sun, Guangsheng Huang, Junli Zhou, Ruanming Liao, Zhonghui Wu, Lin Yu, Zhenbo Wang
Summary: The regeneration of harmful activated sludge into an energy source is a valuable strategy for municipal sludge treatment and recycling. In this study, SiO2-modified N,S auto-doped porous carbon (NSC@SiO2) was successfully obtained through a simple calcination method. The introduction of P-doped NSC@SiO2 (NSPC@SiO2) further enhanced its surface area, pore volume, and carbon defects, making it an excellent sulfur host for lithium-sulfur batteries.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Yun-shan Jiang, Fu-da Yu, Wang Ke, Liang Deng, Yang Xia, Xin-yu Li, Lan-fang Que, Nian Zhang, Lei Zhao, Zhen-bo Wang
Summary: Disordered rocksalt-like cathodes with initial Li-deficient nanostructures, cation vacancies, and partial spinel-type structures have been prepared, providing fast Li+ percolation channels under Li-deficient condition. The prepared sample exhibits high initial discharge capacity and energy density. Advanced spectroscopy and in situ measurements observe highly reversible charge compensation and assign coupled Mn- and O-related redox contribution. Theoretical calculations suggest a novel and chemical reversible trapped molecular O-2 model in the rocksalt structure with vacancies, demonstrating a dual role of Li-deficient structure in promoting cationic oxidation and extending reversible oxygen redox boundary. This work is expected to break through the existing ideas of oxygen oxidation and opens up a higher degree of freedom in the design of disordered rocksalt structures.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yunkun Dai, Bo Liu, Ziyu Zhang, Pan Guo, Chang Liu, Yunlong Zhang, Lei Zhao, Zhenbo Wang
Summary: A strategy of Fe d-orbital splitting modulation by constructing axial coordination on Fe-N-4 sites is presented to regulate the electronic states of single atomic sites around the Fermi level. The axial tractions induce the distortion of Fe-N-4 SP and up to the quasi-octahedral coordination (Fe-N4O1 OCquasi), leading to electron rearrangement and diluted spin polarization. This work provides a novel understanding for improving electrocatalytic performance through orbital-scale manipulation.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yaru Yang, Qingjun Zhu, Jiayi Yang, Han Liu, Yang Ren, Xulei Sui, Panpan Wang, Gang Sun, Zhenbo Wang
Summary: A dual gaseous surface treatment strategy with ammonium bicarbonate is designed to reconstruct the surface characteristics of Li-rich manganese base oxides, achieving an enriched oxygen vacancies mixed-phase surface layer. This modified cathode exhibits excellent high-temperature performance, including improved coulombic efficiency, cycling stability, and rate capability.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jianxi Lu, Songbo Chen, Yuling Zhuo, Xinya Mao, Dong Liu, Zhenbo Wang
Summary: The study demonstrates the design of a novel electrocatalyst with high catalytic performance for hydrogen production through seawater electrolysis. Surface amorphization and morphology engineering are combined to improve catalytic performance. The synergistic effect between surface amorphization and unique microcolumn morphology contributes to the remarkable performance of the electrocatalyst.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Long-Ji Yuan, Bo Liu, Li-Xiao Shen, Yun-Kun Dai, Qi Li, Chang Liu, Wei Gong, Xu-Lei Sui, Zhen-Bo Wang
Summary: A Cyan-Fe-N-C catalyst was constructed with the help of axial Fe4C atomic clusters, which exhibited high catalytic performance in acid environment. The Fe-pyrrolic N-4 structure was stabilized and optimized for OH* adsorption, resulting in excellent half-wave potential and power density in fuel cells.
ADVANCED MATERIALS
(2023)
Article
Engineering, Environmental
Yichen Meng, Minglu Li, Yihan Xu, Hai Liu, Siyu Kuang, Sheng Zhang, Xinbin Ma
Summary: Electrochemical CO2 reduction powered by renewable electricities is a promising solution to achieve carbon neutrality. In this study, In2S3 nanocrystals with abundant grain boundaries showed a high ethanol production efficiency due to the enrichment of *CO intermediates, promoting the coupling of CO molecules and facilitating ethanol production.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Yaxuan Wang, Junfu Li, Shilong Guo, Ming Zhao, Weiwei Cui, Lianfeng Li, Lei Zhao, Zhenbo Wang
Summary: In this study, a new method of battery failure diagnosis in terms of capacity fading is proposed based on the heterogeneous multi-physics aging model of lithium-ion batteries. The key parameters are obtained by using a parameter identification method, and the parameter boundaries when the battery is on the verge of failure are obtained through a model-driven method. Monitoring the key parameters allows for online diagnosis of battery failure and provides an early warning signal when the battery reaches the end of its life, ensuring battery performance and safety.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Lixiao Shen, Miao Ma, Zigang Zhao, Fengdi Tu, Jing Liu, Bin Xu, Yunlong Zhang, Lei Zhao, Guangjie Shao, Zhenbo Wang
Summary: The impact of carbon structure on the performance of carbon-supported catalysts has been studied under different relative humidity conditions. Low-loading solid carbon catalysts perform well at low humidity, while high-loading porous carbon catalysts excel at high humidity. Furthermore, porous carbon catalysts show high mass activity at low current density due to their reduced susceptibility to sulfonate poisoning. On the other hand, solid carbon catalysts facilitate a more uniform ionomer thin-film and create a more active three-phase interface area, resulting in satisfactory performance at high current density and low local-O2 transport resistance.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Yang Hu, Siyu Kuang, Xuerong Zhou, Xiang Li, Sheng Zhang, Roel Prins, Chenxi Zhang, Sensen Shang, Qiang Sheng
Summary: This study investigates the influence of cerium oxide on the catalytic performance of MoP catalysts and the correlations among hydrogen evolution reaction (HER) and hydrotreating reactions. The addition of cerium oxide affects the particle size, morphology, and coordination state of MoP catalysts. Ce-MoP(x) catalysts exhibit a mixture of pebble-like and rod-like particles. Cerium oxide enhances the H2 adsorption capacity of MoP catalysts and inhibits the HER and hydrogen-related reactions, while facilitating non-hydrogen elimination reactions. The results reveal a correlation between HER and hydrogen-related reactions in the networks of quinoline hydrodenitrogenation and dibenzothiophene hydrodesulfurization.
Article
Chemistry, Applied
Haoyuan Chi, Jianlong Lin, Siyu Kuang, Minglu Li, Hai Liu, Qun Fan, Tianxiang Yan, Sheng Zhang, Xinbin Ma
Summary: Self-supported ultrathin NiCo layered double hydroxides (LDHs) electrodes were fabricated as an anode for methanol electrooxidation to achieve high formate production coupled with CO2 electro-reduction. The total formate faradic efficiency of both anode and cathode can reach up to 188% driven by a low cell potential. This work presents a promising approach for fabricating advanced electrodes towards electrocatalytic reactions.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Nanoscience & Nanotechnology
Hequn Wang, Wen Li, Haiyang Liu, Zhen Wang, Xin Gao, Xiangrui Zhang, Yijie Guo, Mingzhi Yan, Sheng Zhang, Luzhao Sun, Hongtao Liu, Zhe Wang, Hailin Peng
Summary: Graphene has been proven as an efficient sieve for hydrogen isotope separation. However, the presence of cracks and imperfections in graphene membranes limits their performance. This study demonstrates a simple but effective method to transfer large-area graphene onto commercial Nafion membranes using palladium thin films, resulting in Pd/Graphene/Nafion composite membranes with a high proton-deuteron separation factor of up to 10. This transfer method avoids mechanical damage to the graphene and enables the palladium thin film to act as a catalyst for electrochemical pumping, promoting the development of graphene-based separation technologies.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Physical
Min Liu, Qiang Zhang, Xueliang Wang, Jianxin Gao, Qianfeng Liu, Erdong Wang, Zhenbo Wang
Summary: Acetic acid-sodium alginate (SA)/NaCl solid anolyte biphasic electrolytes were designed to expand the voltage window and alleviate anode corrosion in the magnesium-air (Mg-air) battery. The prepared SA/NaCl solid electrolyte has a high ionic conductivity and the anode utilization efficiency significantly increased from 9.6% to 61.5%. The assembled Mg-air battery achieved a high open circuit potential (OCP) of 2.59 V, an average discharge voltage of 2.01 V, and a high anode energy density of 2984.5 W h kg(-1) at 0.5 mA cm(-2).
SUSTAINABLE ENERGY & FUELS
(2023)
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)
