Article
Materials Science, Multidisciplinary
Hajer Saadi, Othmen Khaldi, Tarek Larbi, Zohra Benzarti
Summary: This study investigates the impact of incorporating cobalt on various characteristics of ZnO nanoparticles. The results show that cobalt doping affects the crystallite size, optical properties, and dielectric properties, providing a comprehensive experimental and theoretical description of Co-doped ZnO nanoparticles.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Shou-Qi Wang, Ji-Hua Geng, Xue-Xue Zhao, Ya-Zhe Xing
Summary: Ce0.8Sm0.1Nd0.1O2-delta (SNDC) is a promising electrolyte material for intermediate-temperature solid oxide fuel cells (IT-SOFCs). Fe-doping significantly improves the sintering capability and electrical conductivity of SNDC.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Jun Guo, Yu-Ke Zhu, Lin Chen, Zi-Yuan Wang, Zhen-Hua Ge, Jing Feng
Summary: In this study, Bi2S3 with high electrical transport properties was synthesized via Se and Cl co-doping. The significantly improved electrical conductivity and power factor of the material make it a promising candidate for thermoelectric applications at medium temperatures, with a high ZT value and conversion efficiency.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Xing Yang, Jun Guo, Zi-Yuan Wang, Wen-Hao Gu, Quan Shan, Jing Feng, Zhen-Hua Ge
Summary: Low thermal conductivity and high Seebeck coefficient have made Bi2S3-based materials promising for thermoelectric applications. By co-doping with Se and Cl, nanostructured Bi2S3 bulks were prepared, leading to improved power factor and reduced thermal conductivity. As a result, the Bi2S3 samples exhibited enhanced thermoelectric efficiency at high temperatures.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
Julia Ramirez-Gonzalez, Anthony R. West
Summary: Impedance measurements on Mg-doped alumina ceramics showed a combination of oxide ion conductivity and p-type electronic conductivity depending on temperature and oxygen partial pressure. Co-doping with Mg and Si resulted in a reduction in oxide ion conductivity and p-type conductivity due to direct replacement of Al3+by Mg2+ and Si4+ ions.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Physics, Multidisciplinary
Muhammad Qadeer Awan, Javed Ahmad, Abdul Waheed, Syed Ali Raza Gillani, Fahim Ahmed, Sana Ullah Asif, Muhammad Ehsan Mazhar, Shafiq Anwar
Summary: In this study, barium doped BiFeO3 and cobalt doped Bi0.8Ba0.2FeO3 (BBFO) nanocrystalline multiferroic ceramics were prepared using the sol-gel technique. The effects of sintering temperature on the properties of BBFO were investigated, and analysis was conducted on leakage current density and conduction mechanism of the ceramics. Measurements were done on dielectric response, electrical impedance, and Modulus of the material within a certain frequency range.
Article
Engineering, Chemical
Zhipeng Sun, Zilu Liu, Changkun Cai, Hong Deng, Fan Yang, Yao Lu, Xiwen Song, Shengli An, Hailei Zhao
Summary: Novel cobalt-free perovskite-type oxides have been successfully prepared and characterized for their structural stability and oxygen permeability. The cubic perovskite-type structure can be stabilized at ambient temperature, but the oxygen permeation flux is slightly decreased. The substitution of titanium for partial iron enhances the stability of the membrane against different atmospheres, but reduces oxygen permeability.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
H. Y. Hong, D. H. Kim, K. Park
Summary: In this study, the thermoelectric properties of Bi0.97Na0.03CuSeO were systematically investigated by doping Mg2+ ions. The Mg2+ doping significantly enhanced the electrical conductivity by increasing hole concentration and reducing phonon thermal conductivity. By improving the thermoelectric power factor and reducing the thermal conductivity, the thermoelectric performance of Bi0.97Na0.03CuSeO was significantly improved.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
M. F. Al-Kuhaili, Q. A. Drmosh
Summary: Tungsten oxide (WO3) thin films are commonly used as functional coatings in various applications. Doping with Fe has been considered effective for improving their properties. However, this study found that Fe-doped WO3 thin films deposited by co-sputtering exhibited reduced crystallinity, increased electrical resistivity, and widened band gap, resulting in inferior functional performance.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Tariq Aqeel, Heather F. Greer
Summary: We have successfully synthesized fluordoped crystalline mesoporous tin dioxide powder at ambient pressure and temperature. This material exhibits high surface area, narrow pore size distribution, small average crystallite sizes, and good opto-electrical properties. The addition of fluorine increases the opto-electronic activity of tin dioxide by 20 times and conductivity by 100 times compared to pristine tin dioxide.
Article
Materials Science, Ceramics
Chenxin Jin, Jianglei Dan, Yue Zou, Guojun Xu, Zhihao Yue, Xiaomin Li, Fugen Sun, Lang Zhou, Li Wang
Summary: By doping SiOx with ammonium sulfate and carbon-coating it with glucose, carbon-coated nitrogen-doped SiOx (N doped SiOx@C) was successfully prepared to enhance electronic and ionic conductivity. This synergistic effect greatly improved the electrochemical performance, achieving a high specific capacity retention rate of 91.4% after 100 cycles at a high rate. The method is characterized by its flexibility, simplicity, and efficiency.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Inorganic & Nuclear
Edapalli Sumalatha, N. Hari Kumar, Avula Edukondalu, D. Ravinder
Summary: In this study, lanthanum ion doped zinc cobalt ferrite nanoparticles were successfully synthesized using the citrate gel auto-combustion method, and the structural characterization was analyzed from various aspects. The results show that the doping of lanthanum ion can modify the lattice parameter, surface area, and surface roughness of the nanoparticles, and have an impact on the magnetic and electrical properties.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
A. M. Adam, E. M. M. Ibrahim, Anshu Panbude, K. Jayabal, Pandiyarasan Veluswamy, A. K. Diab
Summary: Stoichiometric Pb1-xGexTe crystalline alloys were synthesized and their crystal structure and thermoelectric properties were investigated. Highly Ge-doped samples exhibited the highest thermoelectric power factor at high temperatures. A noticeable reduction in electronic thermal conductivity due to Ge doping was observed, which could lead to a considerable enhancement in the thermoelectric figure of merit.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Electrochemistry
Ding Cai, E. Tao, Shuyi Yang, Zengying Ma, Yun Li, Lin Liu, Daohan Wang, Jianhua Qian
Summary: This study successfully improved the electrical conductivity of TiO2/graphene composite material by doping Ca2+ into the mixed-phase TiO2 lattice. The enhanced conductivity is attributed to the increased carrier concentration and the formation of a new conductive path.
ELECTROCHIMICA ACTA
(2022)
Article
Materials Science, Multidisciplinary
Xin Li, Zhen Liu, Zekun Zhou, Haiyang Gao, Guodong Liang, Daniel Rauber, Christopher W. M. Kay, Peng Zhang
Summary: The study found that doping salts with small-sized cations can enhance the electrical conductivity of PEDOT:PSS films by improving crystalline order and p-doped levels. These findings will be beneficial in developing recipes based on PEDOT:PSS/salt composites for printed flexible electronics applications.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Chemistry, Physical
Prem Prakash Seth, Neera Singh, Manoj Singh, Om Prakash, Devendra Kumar
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Review
Materials Science, Composites
Anbesh Jamwal, Prateek Mittal, Rajeev Agrawal, Sumit Gupta, Devendra Kumar, Kishor Kumar Sadasivuni, Pallav Gupta
JOURNAL OF COMPOSITE MATERIALS
(2020)
Article
Materials Science, Multidisciplinary
Akash Saxena, Neera Singh, Bhupendra Singh, Devendra Kumar, Kishor Kumar Sadasivuni, Pallav Gupta
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART L-JOURNAL OF MATERIALS-DESIGN AND APPLICATIONS
(2020)
Article
Materials Science, Multidisciplinary
Neera Singh, Vaibhav Pandey, Gargi Srivastava, Sitashree Banerjee, Om Parkash, Devendra Kumar
MATERIALS CHEMISTRY AND PHYSICS
(2020)
Article
Materials Science, Biomaterials
Alok Singh Verma, Angara Singh, Devendra Kumar, Ashutosh Kumar Dubey
ACS BIOMATERIALS SCIENCE & ENGINEERING
(2020)
Article
Materials Science, Ceramics
Abhishek Roy, Abhishek Dwivedi, Devendra Kumar, H. Mishra, S. B. Rai
CERAMICS INTERNATIONAL
(2020)
Article
Materials Science, Composites
Vinod Kumar Gupta, Kumar Harshit, Arun Kant Jha, Devendra Kumar, Kishor Kumar Sadasivuni, Pallav Gupta
Summary: This study fabricated iron-alumina metal matrix nanocomposites through powder metallurgical processing and investigated the effect of plain strain deformation on grain strengthening mechanism, revealing its potential application in railway structures and track design.
JOURNAL OF COMPOSITE MATERIALS
(2021)
Article
Materials Science, Ceramics
Somnath Mandal, C. J. Dileep Kumar, Devendra Kumar, Komal Syed, Marie-Aline Van Ende, In-Ho Jung, Sarah C. Finkeldei, William J. Bowman
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2020)
Article
Chemistry, Physical
Harsh Jain, Yagnesh Shadangi, Vikas Shivam, Dibyendu Chakravarty, N. K. Mukhopadhyay, Devendra Kumar
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Article
Engineering, Mechanical
Prem Prakash Seth, Om Parkash, Devendra Kumar
Summary: The study synthesized Mg-Si-Al alloys with the addition of silicon and aluminum to form fine Mg2Si phase. The results showed that the average grain size of Mg2Si phase decreased and compressive fracture strain increased with increasing silicon content. Additionally, the fracture patterns and compressive yield strength varied among different alloys.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
(2021)
Article
Engineering, Electrical & Electronic
Sindhu Singh, Prabhakar Singh, Om Parkash, Devendra Kumar
Summary: Polycrystalline samples of (Ba1-xLax)(Ti0.85CoxSn0.15)O-3 with La and Co co-doping were synthesized and characterized by X-ray diffraction. The co-doping showed significant effects on the crystal structure and properties of the material, leading to high permittivity, low dielectric loss, and temperature stability.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Multidisciplinary
Kartikey Dharendra, Abhishek Roy, Abhishek Dwivedi, Awadhesh Kumar Rai, Shyam Bahadur Rai, Devendra Kumar
Summary: In this study, the dual mode (Upconversion and Downshifting) emission behavior of Tm3+/Yb3+ and Ho3+/Yb3+ co-doped GdVO4 phosphors synthesized via high temperature solid state reaction technique was investigated. The results show improvement in color purity and spectral purity of the phosphors, making them suitable for blue, green, and red display devices.
MATERIALS RESEARCH BULLETIN
(2021)
Article
Materials Science, Multidisciplinary
Preeti Kumari, R. K. Gangwar, P. M. Sarun, Devendra Kumar
Summary: The study added barium titanate to MAST glass ceramic to increase the dielectric constant, resulting in improved microwave dielectric properties. The sintered samples showed the formation of cordierite, BaTi5O11 and Ba2Ti9O20 compounds, which play a key role in enhancing the dielectric constant.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Bhoomika Yadav, Kamal K. Kar, Manas K. Ghorai, Devendra Kumar, Dharmendra Yadav
Summary: In this study, the effect of extrinsic and intrinsic point defects on the conductivity and dielectric behavior of CCTO synthesized using the molten salt method was investigated. It was found that extrinsic defects migration caused dielectric loss at low temperatures, while long-range conduction due to intrinsic defects accumulation resulted in higher losses at high temperatures. By doping Mg into CCTO, the loss was reduced and an almost temperature-independent dielectric constant was achieved.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Engineering, Mechanical
Pallav Gupta, Naseem Ahamad, Jimmy Mehta, Devendra Kumar, Mumtaz A. Quraishi, Moti L. Rinawa, Sumit Gupta, Vijay Chaudhary, Kishor K. Sadasivuni
Summary: Metal matrix nanocomposites using Fe reinforced with Al2O3 and doped with CeO2 were prepared via powder metallurgy. Various methods were employed to investigate corrosion behavior, with the doped Fe-Al2O3 system showing the formation of a nano amorphous layer. Different sample compositions had varying effects on corrosion behavior, as indicated by ANOVA and TOPSIS analysis.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
(2022)
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)
