Article
Chemistry, Physical
Jiahao Chen, Hong Zhang, Lin Yang, Hongzhu Chen, Junming Shao, Zhicheng Li
Summary: This study prepared Li29Zr9Nb3O40 ceramics with good ionic conductivity using a sol-gel method, and found that the oxygen vacancy has a significant impact on their performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Qizhong Wang, Connor S. Watts, Christos E. Athanasiou, Zhenghong Dai, Mingyu Hu, Brian W. Sheldon, Nitin P. Padture
Summary: The atmosphere significantly affects the flash-sintering process, with the use of argon resulting in a dramatic reduction in the flash-onset furnace temperature for titania nanopowders. This leads to finer, more uniform grain sizes and lower, uniform porosity in the ceramics.
SCRIPTA MATERIALIA
(2021)
Article
Chemistry, Physical
Zhizhong Leng, Zuzhi Huang, Xu Zhou, Bo Zhang, Hu Bai, Juan Zhou, Shaorong Wang
Summary: Proton-conducting solid oxide electrolysis cells (H-SOECs) using BZCYYb as the electrolyte material have unique advantages. This study investigates the effects of adding different sintering aids (NiO, CuO, ZnO) to BZCYYb on grain size and conductivity. The results show that adding 1 wt% of NiO and CuO sintering aids improves the density and conductivity of BZCYYb. The conductivity increases with steam concentration in most atmospheres, while in oxygen atmosphere with steam at high temperature, the conductivity initially decreases slightly and then increases. CuO is found to have advantages in promoting hydration reaction and proton conduction of BZCYYb electrolyte compared to NiO.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Wei Li, Piao Luo, Maohua Chen, Xiaoping Lin, Li Du, Huiyu Song, Yuhao Lu, Zhiming Cui
Summary: The study found that the tip effect can exacerbate Li dendrite formation and reduce the cycle life and safety of lithium metal batteries, but by controlling the distribution of nano-tips, surface electric field can be regulated for uniform lithium deposition. The use of Ag nanoparticles and graphene aerogel in anode can mitigate inhomogeneous current distribution, improve lithium deposition, and demonstrate excellent electrochemical performance in full cell testing.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Multidisciplinary
Osmane Camara, Qi Xu, Junbeom Park, Shicheng Yu, Xin Lu, Krzysztof Dzieciol, Roland Schierholz, Hermann Tempel, Hans Kungl, Chandramohan George, Joachim Mayer, Shibabrata Basak, Ruediger-A. Eichel
Summary: An in situ environmental scanning electron microscopy (ESEM) was used to monitor the sintering behavior of NASICON-type Li1.3Al0.3Ti1.7(PO4)3 (LATP) at low environmental pressures. The results showed that no major morphological changes were observed at 10-2 Pa and only coarsening occurred at 10 Pa, while environmental pressures of 300 and 750 Pa led to the formation of typically sintered LATP electrolytes. Additionally, the use of pressure as an additional parameter in sintering allowed for control of the grain size and shape of the electrolyte particles.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Chemistry, Physical
Yanzhi Zhang, Shijiu Liu, Qian Zhang, Tianxiang Ning, Xinli Wang, Anxian Lu
Summary: The microstructure and electrochemical properties of Li1.125Ta0.875-xNbxZr0.125SiO5 ceramics prepared via the solid-phase reaction method were investigated. The conductivity of the ceramics increased and then decreased as the Nb doping concentration increased. Nb doping at 0.1875 mol facilitated the fusion and connection between grains, reducing the number of grain boundaries and increasing the conductivity. The structural distortion caused by the discrepancy in ionic radii of Ta5+ and Nb5+ allowed for more accommodation of Li ions and promoted Li+ diffusion, reducing the energy potential barrier for ion transport. The Li1.125Ta0.6875Nb0.1875Zr0.125SiO5 ceramic exhibited the highest conductivity, making it a potential candidate for all-solid-state batteries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Yixuan Guo, Jun Cheng, Zhen Zeng, Yuanyuan Li, Hongqiang Zhang, Deping Li, Lijie Ci
Summary: The role of the Li2CO3 layer in composite solid electrolytes (CSEs) is elucidated, showing that it inhibits the formation of high conductive interlayers, alters the Li+ transport pathway, and reduces the carrier concentration. In the absence of Li2CO3, the electrolyte exhibits improved ionic conductivity and Li+ transference number, along with excellent cycling performance.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Eric Hopmann, Basem Y. Shahriar, Abdulhakem Y. Elezzabi
Summary: By using WO3 to ionically drive dynamic light control by modulating the refractive index and losses within the waveguide at +/- 1.5 V, ultrahigh optical modulation depth up to 10^6, rapid response speed of <0.56 s, long cyclic life, and very sensitive Na+ ion detection ability in 1 mM-1 M concentration are achieved within a volume of a few mu m3.
Article
Materials Science, Ceramics
Junlong Liu, Shouyue Wang, Haodong Yang, Hongtao Wang
Summary: In this study, Gd0.1Ln0.1Ce0.8O2-& alpha; (Ln = Er, Yb) material was synthesized by a glycine-nitrate combustion method, and the effects of calcining temperature, codoped ion, and sintering additive on the structure, grain size, and intermediate-temperature electrochemical properties were investigated. The morphology and density of the ceria electrolytes were significantly affected by the addition of ZnO as a sintering additive. The conductivities of 1350-GEDC-ZnO and 1350-GYDC-ZnO were 4.4 x 10-2 S cm-1 and 3.4 x 10-2 S cm-1, respectively, at 750 degrees C. The output performance of the intermediate-temperature thin film fuel cell using the best electrical property electrolyte was also studied, and the maximum power densities were obtained at 650 degrees C, 700 degrees C, and 750 degrees C.
CERAMICS INTERNATIONAL
(2023)
Article
Mathematics, Interdisciplinary Applications
Dragos-Constantin Nica, Marius-Mihai Cazacu, Daniel-Eduard Constantin, Valentin Nedeff, Florin Nedeff, Decebal Vasincu, Iulian-Alin Rosu, Maricel Agop
Summary: This manuscript explores the application of multifractal theories of motion based on scale relativity theory in the description of atmospheric dynamics. It suggests that these theories can highlight nondimensional mass conduction laws that describe the propagation of atmospheric entities. By using special operational procedures and harmonic mappings, the equations can be simplified for plotting and analysis. The inhomogeneity of these conduction phenomena is analyzed, and it is found that it can fluctuate and increase at certain fractal dimensions, leading to the conclusion that certain atmospheric structures and phenomena can be explained by atmospheric fractal dimension inversions. This hypothesis is verified using ceilometer data throughout the atmospheric profiles.
FRACTAL AND FRACTIONAL
(2022)
Article
Chemistry, Physical
Xiangchao Zhao, Yuansong Luo, Xiujian Zhao
Summary: This study improves the sintering characteristics and performance of the NASICON-type solid electrolyte LATP by introducing TeO2 as a sintering aid, and significant progress has been made.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
Jingrui Kang, Rui Gu, Xu Guo, Jing Li, Hongchen Sun, Leiyang Zhang, Ruiyi Jing, Li Jin, Xiaoyong Wei
Summary: NASICON-type structured compounds Li1+xMxTi2-x(PO4)(3) have attracted attention for their stability and high lithium ion conductivity. This study successfully synthesized LATP solid electrolyte with SnO-P2O5-MgO glass addition to improve density and ionic conductivity. Different concentrations of SPM glass addition altered Al/Ti-O and P-O bond distances, affecting the relative density and bulk conductivity of LATP samples.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Chemical
Joynal Abedin, Shamim Mahbub, Mohammad Majibur Rahman, Anamul Hoque, Dileep Kumar, Javed Masood Khan, Ahmed M. El-Sherbeeny
Summary: The study investigated the interaction between BSA and TTAB in different solvents, finding changes in critical micelle concentration and spontaneity of micellization process. The addition of salt decreased the cmc value in mixed systems, while temperature and additives influenced the dissociation degree and fraction of ion binding. The free energy of micellization was found to be negative, indicating energetically spontaneous micellization process.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2021)
Article
Polymer Science
David J. Goldfeld, Eric S. Silver, Jose M. Valdez, Marc A. Hillmyer
Summary: The article discusses the use of polymerization-induced microphase separation to prepare solid cross-linked monoliths containing bicontinuous and nanostructured polymer domains, with either a negatively or positively charged polyelectrolyte domain. The study confirmed the continuity of the charged domains through dye exchange experiments and estimated the number of accessible charges within the material.
Article
Electrochemistry
Seyedeh Nooshin Banitaba, Dariush Semnani, Mohammad Karimi, Elahe Heydari-Soureshjani, Behzad Rezaei, Ali A. Ensafi
Summary: Solvent-free polymer electrolytes were prepared using electrospinning and solution casting techniques. Finer fibers were shown to enhance crystalline regions and free lithium ions. Nanofibrous mats had higher ionic conductivity, while solution-casted ones had higher resistance.
ELECTROCHIMICA ACTA
(2021)
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)