Article
Materials Science, Ceramics
O. V. Sreejith, Murugan Ramaswamy
Summary: The study reveals that the lithium-ion diffusion kinetics in lithium titanate can be significantly improved through germanium incorporation, leading to enhanced electrochemical performance and increased discharge capacity of the battery.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Liping Tong, Zhanggui Hu, Zhen Long, Mei Tang, Xiaoqing Qiu
Summary: This study prepared LiFePO4/C@La2O3 by a simple method, and this material exhibits high lithium ion diffusivity and good cyclic stability. It shows promising applicability in improving the capacity retention of cathode materials in lithium-ion batteries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Analytical
Yuxiang Peng, Pravin S. Shinde, Ramana G. Reddy
Summary: This study investigated the electrochemical behavior of chloroaluminate species in three ionic liquids and found that EMIC-AlCl3 favored aluminum electrodeposition with lower energy consumption. The onset of aluminum deposition was determined to proceed via a threedimensional instantaneous nucleation process. The calculated diffusion coefficient values showed a correlation with temperature and the nature of the hydrocarbon group present in the ionic liquid.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Analytical
O. V. Sreejith, M. S. Indu, Murugan Ramaswamy
Summary: Lithium titanate (Li4Ti5O12) anode materials are widely popular due to their exceptional structural properties, and research on elemental doping and surface coating has shown promising results in enhancing their performance in lithium-ion batteries, such as reducing cell impedance, increasing electrode lithium-ion diffusion coefficient, and improving specific capacity.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Yu Pleskov, M. D. Krotova, E. A. Ekimov
Summary: The study investigates the physical and electrochemical properties of conducting diamond-compact electrode materials obtained by transforming graphite into diamond under high pressure and high temperature. The electroactivity of the compacts can be improved by heavy boron doping or adding catalytically active metal platinum. Compacts with high boron content or added platinum showed the highest electroactivity among the studied diamond materials.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Chih-Wei Hu, Chih-Hao Lee, Pin-Jiun Wu
Summary: Investigation on lithium diffusion in active electrode materials is directly related to the electrochemical performance of lithium-ion batteries. Quasi-elastic neutron scattering (QENS) is a powerful tool for studying lithium diffusion dynamics. In this study, the LFPV cathode material was examined using QENS technique, revealing that lithium diffusion in LFPV can be well described by a jump diffusion model. The estimated Li self-diffusion coefficient in LFPV material was approximately 3 x 10(-7) cm(2)/s at T = 600 K, which is significantly faster compared to previous reports using electrochemical measurements but consistent with molecular dynamic simulations. The slower Li ion diffusion in LFPV may be attributed to barriers at two phase boundaries, grain boundaries, and solid-electrolyte interfaces.
JOURNAL OF THE CHINESE CHEMICAL SOCIETY
(2021)
Article
Chemistry, Analytical
Jing Geng, Zhengguang Zou, Tianxing Wang, Shuchao Zhang, Shenglin Zhong, Wenqin Ling, Xiaoxiao Peng, Xixi Hu
Summary: Mn and K co-doped lithium iron phosphate (LFP) cathode materials were successfully synthesized by solvothermal method. The contributions of the two dopants to the LFP were investigated using density functional theory (DFT) calculations and various characterizations. The presence of Mn improved the energy band and diffusion kinetics, while K contributed to the stabilized structure and widened diffusion channel. The co-doped LFP cathode exhibited a high capacity of 145 mAhmiddotg-1 at 5 C and maintained a 96% retention rate after 400 cycles. The interaction between the two doping elements was discussed by comparing with a control group, and the KLMFP samples showed superior electrochemical performance in cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and charge-discharge cycling tests.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Rusiri Rathnasekara, Grant Mayberry, Parameswar Hari
Summary: In this study, the thermoelectric, electrochemical, and dielectric properties of four different ZnO morphologies were investigated. ZnO nanorods exhibited the most favorable properties in terms of thermoelectric, electrochemical, and dielectric performance.
Article
Chemistry, Physical
Shiqi Guan, Zhihai Hu, Yan Dong, Qing Chang, Songdong Yuan, Jian Xiong, Guodong Jiang
Summary: By utilizing diethylene glycol as a solvent and manganese salts as doping sources, manganese doping and morphology control of olivine LiFePO(4) cathode were achieved through a simple solvothermal approach, resulting in improved lithium-ion intercalation/extraction kinetics and diffusion rate, leading to higher capacity, excellent rate capability, and satisfactory cyclability of LiFePO(4).
Article
Electrochemistry
Akbayan Bekey, Gulzhan Lukpanovna Badavamova, Florence Vacandio, Khaisa Avchukir
Summary: This paper investigated the effects of a chelating agent, DTPA, on the anodic dissolution and cathodic deposition of indium. The results showed that the presence of DTPA decreased the polarization resistance of the anodic dissolution of indium and increased the overpotential of indium electroreduction. This study is significant for the electrochemical recovery of indium from ITO waste.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2023)
Article
Engineering, Electrical & Electronic
Rizwan Wahab, Manawwer Alam
Summary: In this study, γ-Al2O3 quantum dots were used as a sensor to detect the organosulfur compound thiourea. The study showed the feasibility and stability of the γ-Al2O3QDs/GCE sensor under different conditions through various experiments and analyses.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Review
Chemistry, Physical
Tim Tichter, Aaron T. Marshall
Summary: Investigating the intrinsic kinetics of macroporous electrodes is a challenging task, as traditional analysis methods are not suitable.
CURRENT OPINION IN ELECTROCHEMISTRY
(2022)
Article
Chemistry, Physical
Meng Wang, Yongqiang Han, Mo Chu, Lin Chen, Meng Liu, Yijie Gu
Summary: The effects of cerium doping and the formation of layered-spinel hetero-structure on the electrochemical properties of lithium-rich cathode material were studied. Cerium doping and formation of spinel phase facilitated lithium ion diffusion and inhibited structural collapse during cycling, leading to improved cycling stability and rate capability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Analytical
Siavash Nazari, Mehdi Shabani-Nooshabadi, Neda Ziaie
Summary: A highly specific electrochemical sensor was developed for the identification and detection of quetiapine (QTPF). The modification of a carbon paste electrode (CPE) with a nanocomposite of iron, lithium ions, and manganese based on nitro-doped carbon enhanced the limit of detection and identification of QTPF. The nanocomposites were characterized using SEM, XRD, and FTIR. The electrochemical behavior of the drug with the modified electrode was studied using cyclic voltammetry, differential pulse voltammetry, chronoamperometry, and EIS. The sensor showed a linear range of 0.090-900 μM and a detection limit of 0.011 μM.
MICROCHEMICAL JOURNAL
(2023)
Article
Energy & Fuels
Asifa Mumtaz, Javed Iqbal, Muhammad Oneeb
Summary: In this study, (hafnium oxide)x-(iron oxide)1-x based electrodes have been designed to achieve a high-performance supercapacitor. The electrode integrates nanostructure design with synergistic effects of hafnium oxide and iron oxide nanoparticles, resulting in remarkable charge-discharge capabilities and superior charge storage capacity. The fabricated electrode exhibits outstanding specific energy density and specific power density.
JOURNAL OF ENERGY STORAGE
(2023)