Article
Chemistry, Physical
Diksha Singh, Sushant Kumar, Abhimanyu Singh, Tejas Sharma, Pawan Singh Dhapola, Subhrajit Konwar, Ekaterina A. Arkhipova, Serguei V. Savilov, Pramod K. Singh
Summary: The study reported the synthesis of a methyl cellulose-based biopolymer electrolyte with varying amounts of ionic liquid, and conducted detailed analyses on its properties. The optimum ionic conductivity was achieved at a specific ratio, leading to the fabrication of high-capacitance batteries.
Article
Chemistry, Physical
Yi-Han Su, Yu-Hsing Lin, Yu-Hsien Tseng, Yuh-Lang Lee, Jeng-Shiung Jan, Chi-Cheng Chiu, Sheng-Shu Hou, Hsisheng Teng
Summary: The paper introduces a postinjection gelated GPE for electric double layer capacitors, synthesized by blending polymers with a conventional liquid electrolyte. This new electrolyte exhibits superior ionic conductivity and dielectric properties, making it suitable for industrial-scale assembly lines and practical applications.
JOURNAL OF POWER SOURCES
(2021)
Article
Engineering, Electrical & Electronic
Shunsuke Yamada, Hiroshi Toshiyoshi
Summary: In this study, a biodegradable ionic gel (BDiG) is developed using a combination of poly(ethylene glycol) diacrylate (PEGDA) and a biodegradable ionic liquid, 1-Butyl-3-methyl-Imidazolium bis(trifluoromethanesulfonyl)imide ([BMIM][TFSI]). The BDiG exhibits high mechanical flexibility and favorable electrical characteristics, making it suitable for applications such as tactile sensors.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Engineering, Chemical
Yi-Han Su, Chun-Yan Shih, Chi-huai Su, Yuh-Lang Lee, Chien-Te Hsieh, Hsisheng Teng
Summary: The study develops a gel polymer electrolyte with graphene oxide (GO)-decorated polymer blend, which exhibits low flammability and high ionic conductivity under harsh conditions. Compared to conventional capacitors, the electrolyte shows improved capacitance, rate capability, and cycling stability. The research also demonstrates excellent performance of the capacitor at extreme temperatures due to the dissociation of solvent-ion clusters and low dielectric loss.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Article
Chemistry, Multidisciplinary
Jae Yeon Lee, Juyoung Moon, Chang Soo Lee, Jung Tae Park
Summary: Designing high-performance polymer-based electrolytes is crucial for enhancing the conductivity of electrochemical capacitors. In this study, a highly conductive polymer/inorganic hybrid electrolyte was developed to improve the ionic conductivity by increasing the free volume between the polymer chains, and it was found that rod-like or other similarly shaped fillers can promote the formation of ionic conduction networks to improve the ionic conductivity.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Chemistry, Physical
Jingfeng Zheng, Luke Schkeryantz, Gerald Gourdin, Lei Qin, Yiying Wu
Summary: Potassium batteries have attracted considerable attention from researchers, with traditional liquid electrolytes raising safety concerns. A new single potassium-ion conducting polymer, KPSTFSA, was synthesized to address this issue, showing high ionic conductivity and potassium ion transference number compared to traditional electrolytes. The electrochemical stability of the polymer gel electrolyte was studied systematically, revealing the instability of the polystyrene structure of KPSTFSA.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Fathiah Kamarulazam, Shahid Bashir, Maryam Hina, Sachin Sharma Ashok Kumar, Surender Gunalan, S. Ramesh, K. Ramesh
Summary: Poly(acrylamide) hydrogels were produced using a free radical mechanism with lithium acetate incorporated for higher ionic conductivity. The study found that the LAM4 hydrogel electrolyte had the highest ionic conductivity and lowest activation energy, leading to improved performance in supercapacitors.
Article
Chemistry, Physical
Austin Yuhang Yap, Sook Wai Phang, Chiam-Wen Liew
Summary: In this study, gel polymer electrolytes (GPEs) based on poly(vinyl acetate) (PVAc) were synthesized using ex-situ polymerization. The GPEs were prepared from precursor solutions containing different volume ratios of vinyl acetate monomer and 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (BMIMTFSI) with a fixed concentration of lithium bis(trifluoromethylsulfonyl)imide (LiTFSI). The GPE with 35% (v/v) of BMIMTFSI showed the highest ionic conductivity and a glass transition temperature of -28.01°C. Addition of BMIMTFSI increased the specific capacitance of the GPEs and improved their energy and power densities.
Article
Polymer Science
Behnam Eslami, Ismaeil Ghasemi, Masoud Esfandeh
Summary: Solid polymer electrolytes (SPEs) are a promising avenue for flexible lithium-ion batteries. However, the low ionic conductivity of polymers remains a challenge. In this study, SPE/FGO electrolytes were prepared using PEO, polyvinyl alcohol, LiClO4, and graphene functionalized with polyethylene glycol. The presence of functionalized graphene effectively reduced crystallinity, and the samples exhibited adequate ionic conductivity at room temperature.
Article
Materials Science, Multidisciplinary
Shujahadeen B. Aziz, Rebar T. Abdulwahid, Niyaz M. Sadiq, Ranjdar M. Abdullah, Dana A. Tahir, Dler A. Jameel, Samir M. Hamad, Omed Gh. Abdullah
Summary: Plasticized polymer blend electrolytes (PBEs) that are flexible and have quasi-solid-state properties were prepared using the casting technique. Biopolymer blend electrolytes based on chitosan (CS) and polyvinyl alcohol (PVA) with decoupled ion motion were manufactured and characterized for EDLC device applications. The PBEs exhibited enhanced ion conduction and dielectric properties with an increase in glycerol plasticizer concentration. The highest ionic conductivity was observed for the PBE plasticized with 40 wt% of glycerol, which was used as a mediator in EDLC fabrication. The EDLC constructed with the most conductive PBE film showed high specific capacitance and remarkable efficiency over 1000 cycles.
RESULTS IN PHYSICS
(2023)
Article
Energy & Fuels
Rebar T. Abdulwahid, Shujahadeen B. Aziz, Mohd F. Z. Kadir
Summary: Biopolymer membranes derived from natural resources, such as chitosan and potato starch, doped with ammonium thiocyanate were used as host electrolyte for electrochemical energy storage devices. Glycerol was used as a plasticizer to prepare plasticized solid biopolymer electrolytes. The addition of glycerol improved the ion conductivity of the electrolyte, and the optimal composition was achieved with 24 wt% of glycerol. The resulting electrolyte showed excellent ion transference number and electrochemical potential stability. The assembled electric double-layer capacitor (EDLC) device exhibited high performance and cyclic stability throughout 2500 cycles.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Multidisciplinary Sciences
Saeideh Alipoori, M. M. Torkzadeh, Saeedeh Mazinani, Seyed Hamed Aboutalebi, Farhad Sharif
Summary: The development of a multi-functional gel structure based on PVA and H3PO4 has been shown to achieve high ionic conductivity and good mechanical flexibility, making it a promising solution for the advancement of flexible devices.
SN APPLIED SCIENCES
(2021)
Article
Chemistry, Physical
Guoqiang Li, He Yang, Danying Zuo, Jing Xu, Hongwei Zhang
Summary: The development of supramolecular GPEs based on deep eutectic solvents (DES) provides a stable voltage window for carbon-based EDLCs. The addition of quinhydrone can further increase the specific capacitance and energy density of the EDLC.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Beichen Liu, Wenxiao Guo, Matthew A. Gebbie
Summary: In this study, we investigate the influence of ionic correlations on the reaction rates and selectivity of CO2 electroreduction. Through experiments, we find that at intermediate concentrations, the reduction rates of CO2 are accelerated and the efficiency of CO production is enhanced. The acceleration of CO2 reduction is due to the amplification of potential-dependent driving forces, rather than changes in onset potential. These findings are applicable to both cocatalytic and noncatalytic ions.
Article
Polymer Science
Ashish Gupta, Amrita Jain, S. K. Tripathi
Summary: The gel polymer electrolyte prepared using a specific ionic liquid shows high ionic conductivity and a large electrochemical window, indicating potential application prospects.
JOURNAL OF POLYMER RESEARCH
(2021)
Article
Materials Science, Ceramics
Ting Wang, X-L Wang, S-H Song, Qing Ma
CERAMICS INTERNATIONAL
(2020)
Article
Electrochemistry
Jingwei Wang, Guohua Chen, Shenhua Song
ELECTROCHIMICA ACTA
(2020)
Article
Engineering, Electrical & Electronic
Jianghe Liu, Zeba Khanam, Ravi Muchakayala, Shenhua Song
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2020)
Article
Chemistry, Physical
Jianghe Liu, Zeba Khanam, Sultan Ahmed, Hengtai Wang, Ting Wang, Shenhua Song
Summary: A novel gel polymer electrolyte (GPE) membrane based on the PVdF-HFP/EMITf/Al(Tf)(3) system has been developed with high ionic conductivity and wide electrochemical stability window, showing outstanding performance under different temperatures.
JOURNAL OF POWER SOURCES
(2021)
Article
Nanoscience & Nanotechnology
Jianghe Liu, Zeba Khanam, Sultan Ahmed, Ting Wang, Hengtai Wang, Shenhua Song
Summary: The gel electrolyte based on the PVA/Zn/ethylene glycol system shows high ionic conductivity and excellent antifreezing performance. The antifreezing Zn-ion hybrid supercapacitor fabricated with this gel electrolyte exhibits outstanding electrochemical properties and cyclic stability, even under low temperatures, demonstrating its potential for flexible energy storage devices in subzero-temperature environments.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Zeba Khanam, Jianghe Liu, Shenhua Song
Summary: Efficient, facile, and scalable production of graphene dispersions is achieved by exfoliating graphite in an environment-friendly PVA/H2O solvent system. High-quality graphene flakes are obtained with a high concentration through systematic investigation of processing parameters. The PVA-stabilized graphene dispersion shows promising potential for commercial viability in various applications.
JOURNAL OF NANOPARTICLE RESEARCH
(2021)
Article
Engineering, Mechanical
T. C. Wang, Y. Guo, X. M. Chen, K. Wang, S. H. Song
Summary: In this study, the coarse-grained heat-affected zone (CGHAZ) of P-doped SA508Gr.4N steel was simulated, and the effects of residual stress and P grain-boundary segregation on fracture nature were investigated. It was found that annealing treatment could improve the toughness of the specimen to a certain extent, but the boundary cohesion would decrease. Furthermore, the variation of ageing temperature also affected the fracture properties of the specimen.
ENGINEERING FAILURE ANALYSIS
(2022)
Article
Green & Sustainable Science & Technology
Zejia Zhao, Tengfei Yin, Suet To, Zhiwei Zhu, Zhuoxuan Zhuang
Summary: This paper investigates the evolution of material removal energy in ultraprecision machining and finds that the total material removal energy decreases with increasing feedrate, but the maximum material removal energy increases. The study also discusses the differences in material removal energy in different regions and the formation mechanism and effects of cleavage fracture.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Materials Science, Multidisciplinary
Zejia Zhao, Suet To, Zhuoxuan Zhuang, Tengfei Yin
Summary: This study investigated the effects of equiaxial and martensitic microstructures on the material removal behavior of Ti6Al4V alloy in ultraprecision machining from the perspective of energy consumption. The results showed that the material removal rate of equiaxial and martensitic alloys is similar, but the martensitic alloy has lower material removal energy and specific cutting energy. Additionally, the impact of material removal rate on material removal energy in machining of the martensitic alloy was discussed.
Review
Materials Science, Multidisciplinary
Tingdong Xu, Kai Wang, Shenhua Song
Summary: The measurement uncertainty in tensile testing results from the influence of temperature and strain rate variations on the microstructure at atomic level, leading to changes in mechanical properties. A new technology system proposes using a mechanical property-tensile strain rate curve to evaluate the original mechanical property, with a higher strain rate yielding results closer to the original property. This technology system could potentially revolutionize the conceptual framework and testing technology system of metallic mechanics.
Article
Materials Science, Multidisciplinary
Kai Wang, Yu Guo, Shenhua Song
Summary: The study focuses on investigating the non-hardening embrittlement caused by grain boundary segregation of P in a P-doped SA508-4 N steel through impact testing in conjunction with Auger electron spectroscopy and microstructural characterization. Results show a linear dependence of DBTT on the boundary concentration of P when steel hardness is fixed. A time-temperature embrittlement diagram is developed based on the DBTT-segregation relation, which can be used to predict embrittlement tendency in the steel.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Multidisciplinary
Jianghe Liu, Zijian Ye, Xingcheng Hu, Sultan Ahmed, Shenhua Song
Summary: The scarcity of lithium and its uneven distribution on Earth has posed a challenge in electrochemical energy storage, but replacing lithium with sodium, which is abundant and low-cost, shows promise. By synthesizing Na-ion conducting gel polymer membranes, the electrical and electrochemical properties of membranes can be optimized for potential applications in future sodium-ion energy storage devices.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Engineering, Industrial
Yang Yang, Jinqian Xiang, Zejia Zhao
Summary: This paper proposes a novel nano-grating generation mechanism that incorporates the combined effect of shearing-based material removal and compressive forming-based deformation in elliptical vibration texturing. The dynamic cutting force model reveals the transient cutting mechanics and is validated through experiments. The relationship between cutting force characteristics and nano-grating topography is analyzed to guide optimal trajectory designs for high-quality nano-gratings and smaller cutting forces.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2023)
Review
Materials Science, Multidisciplinary
Zejia Zhao, Suet To, Jingwei Wang, Guoqing Zhang, Zhimin Weng
Summary: This review highlights the effects of different micro/nanostructures on the machinability of metallic materials and discusses the materials deformation mechanism. Various micro/nanostructures, including crystalline anisotropies, grain sizes, phase compositions, layer-by-layer structures, amorphous structures, micro reinforcements, and porosities, have an impact on machinability. In addition, the challenges and opportunities in machining metallic materials are discussed from the perspective of micro/nanostructures.
MATERIALS & DESIGN
(2022)
Article
Materials Science, Multidisciplinary
Yu Guo, Yu Zhao, Kai Wang, Shenhua Song
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2020)
