Article
Chemistry, Physical
Mohammad Hassan Loghmani, Mona Jalali Rad
Summary: In this study, the use of extracted Glucomannan from Orchis Mascula as a matrix for stable cobalt catalysts in the hydrolysis of sodium borohydride for hydrogen generation was explored. The size, morphology, and activity of Co-glucomannan powders were studied by varying MAA/MBA ratios, with characterization done using XRD, XPS, FE-SEM, and TEM techniques. The catalytic activity of Co-glucomannan was tested on the hydrolysis of sodium borohydride, and kinetic studies were used to determine the partial order respect to catalyst dosage and initial concentration of sodium borohydride. The activation energy of the reaction was calculated using the Arrhenius equation.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Jing Jiang, Shiyu Yang, Huili Lei, Lunhong Ai
Summary: Porous carbon nanostructures as supports can stabilize highly dispersed metal nanoparticles and facilitate mass transfer in reactions; catalytically active porous structures were synthesized and characterized for the efficient catalytic hydrolysis of NaBH4; the prepared Co@NC-600 sample shows high activity due to the catalytically active metallic Co and suitable support effect of N-doped carbon.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Environmental Sciences
Aishah Mahpudz, Siu Ling Lim, Hitoshi Inokawa, Katsuki Kusakabe, Ryuichi Tomoshige
Summary: The study successfully synthesized a non-noble metal cobalt nanoparticle catalyst supported on layered double hydroxide, which showed efficient catalytic hydrolysis of sodium borohydride to produce hydrogen. The optimized size of cobalt nanoparticles enhanced catalytic activity, but the catalyst exhibited gradual decrease in activity during repeated tests.
ENVIRONMENTAL POLLUTION
(2021)
Article
Chemistry, Physical
O. V. Netskina, E. S. Tayban, V. A. Rogov, A. M. Ozerova, S. A. Mukha, V. I. Simagina, O. V. Komova
Summary: In the study, it was found that cobalt catalysts are more active than nickel catalysts in the hydrolysis of sodium borohydride. One reason for the lower activity of nickel catalysts is the presence of hydrogen on its surface, which interferes with reactant adsorption. The addition of cobalt to nickel catalysts can enhance hydrogen generation rate.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Su Sang Yu, Tae Hoon Lee, Taek Hyun Oh
Summary: In this study, an Ag-Ni electrocatalyst supported on multiwalled carbon nanotubes was investigated for direct borohydride-hydrogen peroxide fuel cells. The Ag41Ni59/MWCNTs catalyst exhibited the highest catalytic activity and selectivity among the investigated catalysts. The prepared Ag-Ni bimetallic electrocatalyst has moderate catalytic activity and selectivity and is cost effective.
Article
Chemistry, Physical
Merve Altinsoy, Ayhan Abdullah Ceyhan
Summary: In this study, a cobalt-doped catalyst was prepared from chicken eggshell powder for the hydrolysis of sodium borohydride. The effects of various parameters on the hydrolysis process were examined. The prepared catalyst showed a high hydrogen generation rate and good reusability, making it advantageous for use in sodium borohydride hydrolysis.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Polymer Science
Ahmed Abutaleb, Ibrahim M. Maafa, Nasser Zouli, Ayman Yousef, M. M. El-Halwany
Summary: Metallic Co NPs@poly(vinylidene fluoride-co- hexafluoropropylene) nanofibers (PVFH NFs) were synthesized through electrospinning and in situ reduction of Co2+ ions onto PVFH membrane. Physiochemical techniques confirmed the formation of metallic Co@PVFH NFs. The formulation with 40 wt% Co showed the highest catalytic activity in dehydrogenation of sodium borohydride (SBH), producing 110 mL of H-2 in 19 min at 25 degrees C. The catalyst also exhibited outstanding stability after six cycles of hydrolysis.
Article
Chemistry, Physical
Ibrahim Gozeten, Kadir Karakas, Yasar Karatas, Mehmet Tunc, Mehmet Gulcan
Summary: This study focuses on the production of hydrogen from sodium borohydride in a methanolysis environment using ruthenium nanoparticles impregnated on a halloysite support material. The newly synthesized nanocatalyst showed excellent activity and reusability in the catalytic methanolysis reaction. The material analysis confirmed the homogeneous distribution of ruthenium nanoparticles on the support material. Kinetic studies were conducted to calculate the kinetic parameters and determine the rate equation for hydrogen production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Materials Science, Multidisciplinary
Wang Lei, Huiming Jin, Jichen Gao, Yuerong Chen
Summary: The study demonstrates that the amorphous Co-Mo-B alloy supported on reduced graphene oxide shows higher hydrogen generation rate and better cycling stability, making it a promising catalyst for hydrogen generation from NaBH4 hydrolysis.
JOURNAL OF MATERIALS RESEARCH
(2021)
Article
Green & Sustainable Science & Technology
Arife Uzundurukan, Elif Seda Akca, Yagmur Budak, Yilser Devrim
Summary: In this study, carbon nanotube-graphene supported PtAu, Au and Pt catalysts were prepared and tested in a liquid-fed NaBH4/H2O2 fuel cell. The PtAu/CNT-G catalyst showed enhanced performance with a maximum power density of 139 mW/cm(2) at 50 degrees Celsius.
Article
Chemistry, Physical
Dinh Trinh Tran, Tap Huu Van, Yu-chih Tsai, Kun-Yi Andrew Lin, Tuan Dinh Duong
Summary: This study reports the design and fabrication of a cobalt-based catalyst for the hydrolysis of sodium borohydride (NaBH4), which shows excellent catalytic activity and stability. The hierarchical porous hollow core-shell framework cobalt oxide (HCSCO) catalyst exhibits a high H-2 generation rate and a low activation energy. Compared to other catalysts, HCSCO demonstrates superior performance. This research provides a valuable strategy for the synthesis and fabrication of efficient catalysts.
Article
Green & Sustainable Science & Technology
Taek Hyun Oh
Summary: Au-based bimetallic electrocatalysts supported on MWCNTs were investigated to improve the selectivity and activity of catalysts for DBPFCs. The study found that Au49Pd51/MWCNTs was the most suitable for the anode and Au74Ni26/MWCNTs was the most suitable for the cathode, showing good performance and stability for 70 minutes, with a maximum power density of 279.5 mW/cm(2) obtained at 52.0 +/- 2.0 degrees C. The Au-based bimetallic catalysts have potential for wide application in DBPFCs.
Article
Chemistry, Physical
Samikannu Prabu, Kung-Yuh Chiang
Summary: Sulfur, nitrogen-codoped highly porous carbon nanostructures are used as efficient components for hydrogen generation. The waste coffee grounds are carbonized and activated to produce hierarchically SN doped porous carbon nanostructures. Pd-Co3O4 nanoparticles are anchored onto SN-codoped carbon nanosheets. An effective method for optimization of the Pd-Co3O4/SN-CNS-600 catalytic efficiency is proposed. The catalyst exhibits excellent catalytic activity for NaBH4 catalytic methanolysis at room temperature with a high hydrogen generation rate.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Yiting Bu, Jiaxi Liu, Hailiang Chu, Sheng Wei, Qingqing Yin, Li Kang, Xiaoshuang Luo, Lixian Sun, Fen Xu, Pengru Huang, Federico Rosei, Aleskey A. Pimerzin, Hans Juergen Seifert, Yong Du, Jianchuan Wang
Summary: In this study, Co nanoparticles supported on bagasse-derived porous carbon (Co@xPC) were synthesized for catalytic hydrolytic dehydrogenation of NaBH4. The Co@150PC catalyst showed high hydrogen generation activity and excellent durability. The results indicate that the Co@xPC structure enhances the hydrolysis efficiency of NaBH4.
Article
Energy & Fuels
Cafer Saka
Summary: Phosphorus-doped graphitic carbon nitride (gC3N4) has been used as a catalyst in the dehydrogenation of sodium borohydride (NaBH4) methanolysis for the first time. The reaction parameters including interaction time, NaBH4 concentration, catalyst amount, and temperature were investigated. The results showed that the catalyst had good performance in the reaction, and its activity was affected by the above-mentioned parameters.
Article
Environmental Sciences
Xinmin Liu, Yanjie Niu, Yuqing Huang, Xuexia Qiu, Qingjie Guo
Summary: Two new types of solid adsorption materials were prepared from waste television plastics and used to capture CO2 in flue gas from coal-fired power plants. The results showed that these materials had different CO2 adsorption capacities and mechanisms.
ENVIRONMENTAL TECHNOLOGY
(2023)
Article
Engineering, Chemical
Huifen Kang, Jingjing Ma, Xintong Guo, Ziheng Han, Jian Hao, Qingjie Guo
Summary: This study investigated the emissions and migration of selenium using an iron-based oxygen carrier in chemical looping combustion. The results showed that the presence of the oxygen carrier significantly reduced the emissions of selenium and promoted its conversion from gaseous form to solid form. Additionally, the temperature of the fuel reactor and the number of oxygen carrier re-oxidation cycles played a crucial role in the emissions and retention of selenium.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Engineering, Chemical
Huang Yuqing, Xinmin Liu, Xiude Hu, Qingjie Guo
Summary: The modified resin was used as a multifunctional biological carrier for phenolic wastewater treatment in an anaerobic fluidized bed microbial fuel cell. The modified resin composite material was prepared by polymerizing conductive polyaniline on the surface and pores of macroporous adsorption resin. Various modified resins were prepared and characterized using Fourier-transform infrared spectroscopy, scanning electron microscopy, specific surface area, and pore structure analysis. Molecular dynamics simulation was used to analyze the interaction forces and cohesive energy density, providing qualitative agreement with experimental data. When the modified resin with a mass ratio of resin to aniline of 1:0.6 was used, significant improvements in chemical oxygen demand removal efficiency, voltage, and power density were observed in the AFB-MFC.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Review
Energy & Fuels
Mei An, Qingjie Guo, Xianyong Wei
Summary: The reaction mechanism of H2S and Hg0 on CuFe2O4 with oxygen vacancy structure was investigated using X-ray photoelectron spectroscopy (XPS) characterization and Density Functional Theory (DFT) calculations. The results showed that oxygen vacancies enhanced the adsorption capacity of CuFe2O4 towards Hg, H2S, and HgS, and improved the energy barrier and thermodynamic stability of key intermediates.
Article
Engineering, Chemical
Ruotong Wang, Tuo Guo, Xiaoju Xiang, Yinmei Yin, Qingjie Guo, Yanxia Wang
Summary: In this research, solid amine adsorbents were functionally modified with sulphur-containing antioxidant 2-mercaptobenzimidazole (MB) to prevent amine group oxidation. The modified adsorbents showed a decrease in CO2 adsorption capacity of only 16.8% after 30 cycles, compared to a decrease of 63.2% for unmodified adsorbents. This indicates that MB modification can effectively inhibit the oxidative degradation of solid amine adsorbents and improve their antioxidant stability.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Jianping Yang, Yuanyuan Na, Yingchao Hu, Penglin Zhu, Fanyue Meng, Qingjie Guo, Zequn Yang, Wenqi Qu, Hailong Li
Summary: Circulating adsorbents integrating elemental mercury adsorption and oxidized mercury decomposition/desorption processes were used for simultaneous adsorbent recycling and mercury recovery. The formation of granulated adsorbent pellets reduced elutriation in the system. La0.8Ce0.2MnO3 perovskite adsorbent was molded into pellets using an extrusion-spheronization method with microcrystalline cellulose (MC) as a pore-creating template. The pellets showed excellent Hg0 removal efficiency and durability in a wide temperature range, with slight interference from SO2 and H2O and enhancement from O2 and NO. The presence of pore channels in the pellets allowed for efficient Hg0 diffusion and in-situ retention during high-temperature burning.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Analytical
Huifen Kang, Xintong Guo, Mei An, Qingjie Guo, Guozhang Chang
Summary: A combination of Ca-Fe and HZSM-5 catalysts was proposed to enhance the yields of aromatic hydrocarbons from pinecone pyrolysis. The performance of the catalysts and the mechanism of enhanced aromatic hydrocarbon generation were investigated. The results showed that the combination of Ca-Fe and HZSM-5 catalysts produced the largest peak area and highest relative content of aromatic hydrocarbons. The introduction of Ca-Fe components increased the yield of aromatics, especially benzene, toluene, ethylbenzene, and xylene.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Materials Science, Multidisciplinary
Cheng Zuo, Xishi Tai, Qian Su, Zaiyong Jiang, Qingjie Guo
Summary: In the field of photocatalysis, loaded photocatalyst offers advantages of controlled morphology, uniform preparation, low cost, and easy recovery, making it a potential substitute for powder photocatalysts. In this study, TiO2 and Cu7S4 hybrid materials with oxygen vacancies grown on copper mesh were prepared. The enhanced photocatalytic performance of the material can be attributed to the synergistic effect between the interfacial electric field of the heterostructure and the abundant oxygen vacancies. This research provides insights into the design of S-scheme photocatalysts for efficient nitrogen reduction.
Article
Engineering, Chemical
Zhuangmei Li, Ying Zhu, Na Li, Hui Zhang, Yuhua Wu, Ping Li, Qingjie Guo, Hongcun Bai
Summary: Understanding the reactive mechanism of coal thermochemical conversion is crucial for the efficient utilization of coal. However, the evolution of coal macromolecular structure, reactants, and products at particle and molecular scales remains unclear. This study used reactive force field molecular dynamics to uncover the reactive mechanism and nitrogen transformation during the combustion of HSW coal at microscopic scales. The effects of chemical equivalent and combustion temperature were investigated to explore the structural evolution, combustion reactants, and products. The results revealed observable changes in coal structure fracture during the continuous reaction. Furthermore, the study established the transformation networks of organic nitrogen in combustion and identified the pathway for the formation of HCN, NO, and NO2.
Article
Engineering, Chemical
Yunlei Zhao, Bo Jin, Zhineng Zhang, Kun Huang, Yakun Wang, Xiao Luo, Qingjie Guo, Zhiwu Liang
Summary: Using self-templated metal-organic framework (MOF) to develop efficient iron-based oxygen carriers is an effective way, but the effect of metal oxide-support interaction and crystal structure on the reactivity of MOF-derived iron-based materials is still unclear.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Environmental Sciences
Hui Huang, Zhaoxi Wei, Qingru Ge, Qingjie Guo
Summary: This study focuses on 278 cities in China from 2000 to 2017 and uses the SBM model to measure carbon emission efficiency. The results show that the average carbon emission efficiency in China gradually dropped from 0.6 to 0.5 during the research period. The classification of cities based on carbon emission efficiency reveals a decrease in high-efficiency cities and an increase in medium-low- and low-efficiency cities. The spatial-temporal evolution of carbon emission efficiency follows a certain pattern and has spatial auto-correlation. The study also identifies factors such as improving urban development quality and technological innovation, government intervention, and attracting high-quality foreign capital to improve the low efficiency of carbon emissions in cities.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Shengnan Xu, Yun lu Han, Chao Ma, Yanxia Guo, Man Wu, Qingjie Guo, Hongjing Tian
Summary: Mixtures of shell-biochar and calcium silicate slag were impregnated with pentaethylenehexamine and then mixed with wet flue gas desulfurization gypsum to prepare adsorbents. The presence of crystalline water in FGDG slag affected the CO2 adsorption mechanisms of the amine groups. The FGDG modified adsorbents showed comparable cyclic recyclability and a minimal decrease in adsorption capacity after 12 cycles.
Article
Thermodynamics
Zhe Cui, Yang Sun, Wende Tian, Bin Liu, Qingjie Guo
Summary: This paper proposes a novel dynamic safety control strategy based on process modeling and complex risk computation to ensure the stable operation of the coal chemical looping gasification system (CCLGS). By modeling the CCLGS process and calculating the risk, it is found that the fuel reactor (FR) and air reactor (AR) have higher risk grades. Finally, a study on the dynamic control of FR and AR processes is conducted to evaluate the safety integrity level of pressure controllers.
Article
Engineering, Chemical
Ziheng Han, Huifen Kang, Nini Yuan, Xintong Guo, Jingjing Ma, Qingjie Guo
Summary: Selenium pollution from coal utilization is a growing concern. Calcium-iron oxygen carriers and alkali metal ions have inhibitory effects on selenium, reducing its emissions. The retention mechanisms of selenium by Fe2O3, CaFe2O4, Ca2Fe2O5, and bottom ash were investigated. Iron-based oxygen carriers can oxidize H2Se(g) to SeO2(g) and release lattice oxygen to form an Fe-O-Se structure and retain selenium. CaFe2O5 showed the highest retention rate of 32.301%. Bottom ash gradually increased selenium retention, with alkali metal ions playing a crucial role. This study provides a new approach to selenium removal using oxygen carriers and bottom ash during chemical looping gasification.
Article
Engineering, Environmental
Chenglong Wang, Lerao Wang, Xumei Tao, Liang Huang, Zaiqing Yang, Qingjie Guo
Summary: Fe-MOFs@Fe2O3 composites were prepared using BDB plasma method with recycle of waste PET, showing high specific surface areas and a low electron-hole complexation rate. These composites exhibited good photocatalytic performance, degrading 99.3% of malachite green within 30 min under visible light. This method provides a new approach for recycling waste PET plastics and preparing new energy functional materials.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(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)