Article
Chemistry, Physical
M. A. Chavez-Navarro, E. Gonzalez-Tovar, M. Chavez-Paez
Summary: A Monte Carlo simulation study was conducted on the charge distribution and structure of the electric double layer (EDL) that forms between two planar interfaces. The results showed that in the presence of multifaceted charged surfaces, the ions between the walls exhibited complex behavior and formed an EDL next to the charged domains of the interface, with density profiles of counterions and coions established as a function of the nature and configuration of the charged strips.
Article
Chemistry, Physical
Jui-Yu Pai, Cheng-Ta Hsieh, Chih-Hung Lee, Jeng-An Wang, Hao-Yu Ku, Chun-Lung Huang, Laurence J. Hardwick, Chi-Chang Hu
Summary: Functionalised polyimide separators with SiO2 nanoparticles enhance mechanical strength, electrolyte uptake capability, and ionic conductivity, improving the performance of electrical double-layer capacitors and lithium-ion batteries. Adding SiO2 NPs helps tailor the properties of the polyimide separator for specific applications, such as high-rate performances and thermal shutdown function.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Aniruddha Seal, Utkarsh Tiwari, Ankur Gupta, Ananth Govind Rajan
Summary: This paper introduces the phenomenon of electrical double layers (EDLs) and their applications in various fields. The development of Poisson-Boltzmann (PB) models and their modifications have greatly enhanced the understanding of the structure and dynamics of EDLs. However, the exclusion of van der Waals (vdW) and soft repulsive interactions in the models remains a notable knowledge gap. The modified PB-LJ approach presented in this study, which incorporates vdW and soft repulsion interactions, provides a more accurate theoretical description of EDLs and has practical applications. Overall, the paper receives a rating of 8.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Materials Science, Ceramics
Temesgen D. Desissa
Summary: The study investigated the interface properties of oxide materials at high temperatures, revealing the electrical, chemical, and thermal stabilities of the contact materials between 500-1000 degrees Celsius. Annealing at elevated temperatures maintained the chemical stability of the interfaces, with longer annealing times resulting in increased reverse current output attributed to increased contact area and cation inter-diffusion.
CERAMICS INTERNATIONAL
(2021)
Article
Biochemical Research Methods
Yi C. Lai, Huan J. Keh
Summary: This study examines the startup of electrophoretic motion in a suspension of spherical colloidal particles with constant zeta potential or surface charge density. Explicit formulas for the transient electrophoretic velocity of the particles are obtained, showing that the transient electrophoretic mobility is influenced by various parameters such as particle density ratio, volume fraction, and the ratio of particle radius to Debye length.
Article
Physics, Applied
Zhuolin Cheng, Zongke Hou, Tong Wu, Yao Wang, Rou Li, Ying Lin, Jianying Li, Shengtao Li, Kangning Wu
Summary: A transient conducting model for ZnO varistors with double Schottky barriers (DSBs) is proposed in this study by quantifying the charge trapping processes of the interface states. The model demonstrates that the DSB can quickly reach a quasi-steady state under time-varying ac voltage due to efficient charge trapping and slow de-trapping. This research sheds light on investigating time-varying conducting systems and opens avenues for condition assessments of nonlinear conducting devices.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Energy & Fuels
S. Das, M. Manuraj, R. B. Rakhi, A. Ajayaghosh
Summary: A high-frequency symmetric electrochemical double layer capacitor (EDLC) based on eggshell membrane (ESM) and carbon nanotubes (CNTs) was successfully fabricated, showing excellent areal capacitance, frequency response, and cycling stability, indicating great potential for high-frequency electronic device applications.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Materials Science, Multidisciplinary
Emre Cevik, Banu Karaman, Seyda Tugba Gunday, Ayhan Bozkurt
Summary: A new type of graft copolymer based on PEGME grafted poly(VA-co-AN) was synthesized and used to produce gel polymer electrolytes with promising thermal stabilities and high ionic conductivity. The PEGME side chains in the electrolytes softened the materials and improved the overall conductivity. Electrochemical capacitor devices fabricated with these electrolytes exhibited high specific capacitance and energy density, along with excellent cyclic stability and coulombic efficiency.
Article
Chemistry, Multidisciplinary
Xiang Han, Lanhui Gu, Zhefei Sun, Minfeng Chen, Yinggan Zhang, Linshan Luo, Min Xu, Songyan Chen, Haodong Liu, Jiayu Wan, Yan-Bing He, Jizhang Chen, Qiaobao Zhang
Summary: This study proposes a novel design of a silicon anode for solid-state batteries, which utilizes porous microsized silicon decorated with dense Ag nanoparticles and coated with a thin carbon layer. The experimental results demonstrate that this design can alleviate the mechanical stress caused by the volume change of silicon during cycling, and achieve high-rate charge transfer and stable cycling performance.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Xiang Han, Lanhui Gu, Zhefei Sun, Minfeng Chen, Yinggan Zhang, Linshan Luo, Min Xu, Songyan Chen, Haodong Liu, Jiayu Wan, Yan-Bing He, Jizhang Chen, Qiaobao Zhang
Summary: This research presents a high-performance silicon anode by decorating highly dense Ag nanoparticles on porous microsized Si and coating it with a thin carbon layer, leading to significant improvements in addressing the issues of volume changes, kinetics, and interface stability. When combined with a specific solid-state electrolyte, the silicon anode exhibits excellent reversible capacity, high-rate capability, and stable cycling performance. The findings are of great importance for the development of high-capacity and durable silicon anodes for high-performance solid-state batteries.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
J. Lund, K. S. N. Vikrant, C. M. Bishop, W. Rheinheimer, R. E. Garcia
Summary: A generalized framework incorporating various free energy contributions is presented to describe the Space Charge Layer (SCL) and its effect on transport properties in ionic ceramics. While existing analytical and ideal solution models can capture SCL, they fall short in highly doped systems. In contrast, MDS and VCG models provide more accurate descriptions of concentration-dependent electrical conductivity with smaller cumulative errors.
Article
Chemistry, Multidisciplinary
Songming Yang, Youer Deng, Shiqi Zhou
Summary: The aim of this paper is to investigate the possible use of the dipole dimer water model in describing the electrical double layer capacitor capacitance behaviors. It is confirmed that the dipole dimer water model enables the reproduction of various experimental phenomena, such as the negative correlation between capacitance and temperature, insensitivity to electrolyte concentration, and the shape of the capacitance-voltage curve. The paper emphasizes the indispensable role of the electric dipole in reproducing the confirmed capacitance behaviors and highlights the potential of the dipole dimer water model.
Article
Materials Science, Multidisciplinary
Peijiao Fang, C. P. Mulligan, Ru Jia, Jian Shi, S. Khare, Daniel Gall
Summary: In this study, titanium carbide films were deposited onto MgO(001) substrates using reactive magnetron sputtering. The microstructure of the films was dominated by a TiCx(001) matrix, and the presence of secondary phases affected the hardness and elastic modulus. The solubility of carbon in the cubic phase was predicted to be low.
Article
Multidisciplinary Sciences
Chengbin Fei, Nengxu Li, Mengru Wang, Xiaoming Wang, Hangyu Gu, Bo Chen, Zhao Zhang, Zhenyi Ni, Haoyang Jiao, Wenzhan Xu, Zhifang Shi, Yanfa Yan, Jinsong Huang
Summary: The incorporation of lead chelation molecules into hole-transport layers (HTLs) improves the bottom interfaces of perovskite solar cells, leading to enhanced performance. The addition of these molecules reduces the amorphous region and passivates the perovskite surface near the HTLs. The resulting minimodule achieves a certified power conversion efficiency (PCE) of 21.8% (stabilized at 21.1%) and a minimal small-cell efficiency of 24.6% (stabilized at 24.1%) throughout the module area.
Article
Astronomy & Astrophysics
M. Shamir, Imran A. Khan, G. Murtaza
Summary: Charged particles energization at the magnetic reconnection sites in the Earth's magnetosphere is a subject of active debate in space plasma. This study investigates the double layer (DL) structures and their associated electric field at the magnetopause magnetic reconnection site using a simple analytical model. The results show that the non-extensive parameter of the Tsallis distribution has a significant effect on the DL's strength and its associated parallel electric field. These findings have implications for understanding charged particle energization in the separatrix region of the Earth's magnetopause during magnetic reconnection.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)