Reversible Charge/Discharge Reaction of a Ternary Metal Fluoride, Pb2CuF6: A Highly Conductive Cathode Material for Fluoride-Ion Batteries

2022 ◽  
Author(s):  
Takeshi Tojigamori ◽  
Hiroshi Nakajima ◽  
Hidenori Miki ◽  
Naoki Matsui ◽  
Tomotaka Nakatani ◽  
...  
Keyword(s):  
Cathode Material ◽  
Fluoride Ion ◽  
Metal Fluoride ◽  
Ternary Metal ◽  
Charge Discharge ◽  
Discharge Reaction

Investigation on Structure and Electrochemical Properties of Li[Ni1/3Co1/3Mn1/3]O2 for Lithium Ion Batteries

2007 ◽  
Vol 336-338 ◽  
pp. 455-458
Author(s):  
Xiu Juan Shi ◽  
Yong Ping Zheng ◽  
Fei Yu Kang ◽  
Xin Lu Li ◽  
Wan Ci Shen
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Sol Gel ◽  
Lithium Ion ◽  
Hexagonal Structure ◽  
Oxidation States ◽  
Potential Range ◽  
Xps Analysis ◽  
Electrochemical Behaviors ◽  
Charge Discharge

Cathode material Li[Ni1/3Co1/3Mn1/3]O2 for lithium-ion batteries with layered hexagonal structure was successfully synthesized in sol-gel way. The influences of calcination temperature (from 700° to 1000°C) on the structure and electrochemical behaviors of Li[Ni1/3Co1/3Mn1/3]O2 were extensively investigated. The results of XRD show that all samples are isostructural with α-NaFeO2 with a space group R-3m. XPS analysis shows that the oxidation states of Co and Mn were Co3+ and Mn4+ respectively, while Ni exists as Ni2+ and Ni3+. The charge-discharge experiments show that the sample calcined at 850°C delivers 194.8mAh/g in the first cycle at C/5 rate in 2.5-4.3V potential range.

scholarly journals Two-Electron Reaction without Structural Phase Transition in Nanoporous Cathode Material

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Tomoyuki Matsuda ◽  
Yutaka Moritomo
Keyword(s):  
Phase Transition ◽  
Cathode Material ◽  
Structural Phase Transition ◽  
Structural Phase ◽  
Discharge Process ◽  
Charge Capacity ◽  
High Charge ◽  
Valence States ◽  
X Ray Absorption ◽  
Charge Discharge

We investigated the charge/discharge properties, valence states, and structural properties of a nanoporous cathode materialLixMn[Fe(CN)6]0.83·3.5H2O. The film-type electrode ofLixMn[Fe(CN)6]0.83·3.5H2Oexhibited a high charge capacity(=128 mAh g-1)and a good cyclability (87% of the initial value after 100 cycles) and is one of the promising candidates for Li-ion battery cathode. X-ray absorption spectra near the Fe and Mn K-edges revealed that the charge/discharge process is a two-electron reaction; that is,MnII–NC–FeII,MnII–NC–FeIII, andMnIII–NC–FeIII. We further found that the crystal structure remains cubic throughout the charge/discharge process. The lattice constant slightly increased during the[FeII(CN)6]4-/[FeIII(CN)6]3-oxidization reaction while decreased during theMnII/MnIIIoxidization reaction. The two-electron reaction without structural phase transition is responsible for the high charge capacity and the good cyclability.

Charge–discharge reaction mechanism of manganese molybdenum vanadium oxide as a high capacity anode material for Li secondary battery

2003 ◽  
Vol 13 (4) ◽  
pp. 897-903 ◽  
Author(s):  
Daishu Hara ◽  
Junichi Shirakawa ◽  
Hiromasa Ikuta ◽  
Yoshiharu Uchimoto ◽  
Masataka Wakihara ◽  
...  
Keyword(s):  
Reaction Mechanism ◽  
Vanadium Oxide ◽  
Anode Material ◽  
High Capacity ◽  
Secondary Battery ◽  
Charge Discharge ◽  
Discharge Reaction

scholarly journals Plasma processes to detect fluorine with ICPMS/MS as [M–F]+: an argument for building a negative mode ICPMS/MS

2018 ◽  
Vol 33 (8) ◽  
pp. 1304-1309 ◽  
Author(s):  
Nor Laili Azua Jamari ◽  
Arne Behrens ◽  
Andrea Raab ◽  
Eva M. Krupp ◽  
Jörg Feldmann
Keyword(s):  
Bond Energy ◽  
Fluoride Ion ◽  
Metal Fluoride ◽  
Ionisation Potential ◽  
Negative Mode ◽  
The Difference ◽  
Oxygen Bond

The paper describes that the 2nd ionisation potential and the difference in bond energy of a metal to fluorine bond and of a metal to oxygen bond are the most important parameters to form a metal fluoride ion for the detection of fluorine in ICPMS/MS.

scholarly journals Fluoride Ion Interactions in Alkali-Metal Fluoride–Diol Complexes

2020 ◽  
Vol 59 (9) ◽  
pp. 6631-6639 ◽  
Author(s):  
Yuto Tonouchi ◽  
Kazuhiko Matsumoto ◽  
Takashi Nagata ◽  
Masato Katahira ◽  
Rika Hagiwara
Keyword(s):  
Alkali Metal ◽  
Fluoride Ion ◽  
Metal Fluoride ◽  
Alkali Metal Fluoride ◽  
Ion Interactions

scholarly journals Exploration of Li-Organic Batteries Using Hexaphyrin as an Active Cathode Material

Molecules ◽  
2019 ◽  
Vol 24 (13) ◽  
pp. 2433
Author(s):  
Ji-Young Shin ◽  
Zhongyue Zhang ◽  
Kunio Awaga ◽  
Hiroshi Shinokubo
Keyword(s):  
Cathode Material ◽  
Electrochemical Oxidation ◽  
Electrode Material ◽  
Uv Absorption ◽  
Active Electrode ◽  
Fast Charging ◽  
Organic Batteries ◽  
Charge Discharge

Lithium-collaborating organic batteries (Li-[28]hexs) were investigated with [28]hexaphyrin(1.1.1.1.1.1) as an active electrode material. Each hexaphyrin of [28]Hex cathode ideally involved four electrons per unit cycle and performed a typical charge/discharge processes of Li-organic battery. Li-[28]Hex batteries set with fast charging rates showed reasonably stable charge and discharge performances over 200 cycles even though it caused incomplete (2~3 electrons) charge/discharge cycles due to failing the complete charging process. UV absorption changes of [28]hexaphyrin in CH2Cl2 were supplementary for the electrochemical oxidation, which performed a conversion from [28]hexaphyrin to [26]hexaphyrin.

Preparation and Characterization of High-Voltage Cathode Material LiNi0.5Mn1.5O4 for Lithium Ion Batteries

2019 ◽  
Vol 953 ◽  
pp. 121-126
Author(s):  
Zhe Chen ◽  
Quan Fang Chen ◽  
Sha Ne Zhang ◽  
Guo Dong Xu ◽  
Mao You Lin ◽  
...  
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Synthesis Method ◽  
Rate Capability ◽  
Lithium Ion ◽  
Diffusion Path ◽  
High Energy ◽  
High Energy Density ◽  
Charge Discharge

High energy density and rechargeable lithium ion batteries are attracting widely interest in renewable energy fields. The preparation of the high performance materials for electrodes has been regarded as the most challenging and innovative aspect. By utilizing a facile combustion synthesis method, pure nanostructure LiNi0.5Mn1.5O4 cathode material for lithium ion batteries were successfully fabricated. The crystal phase of the samples were characterized by X-Ray Diffraction, and micro-morphology as well as electrochemistry properties were also evaluated using FE-SEM, electrochemical charge-discharge test. The result shows the fabricated LiNi0.5Mn1.5O4 cathode materials had outstanding crystallinity and near-spherical morphologies. That obtained LiNi0.5Mn1.5O4 samples delivered an initial discharge capacity of 137.2 mAhg-1 at the 0.1 C together with excellent cycling stability and rate capability as positive electrodes in a lithium cell. The superior electrochemical performance of the as-prepared samples are owing to nanostructure particles possessing the shorter diffusion path for Li+ transport, and the nanostructure lead to large contact area to effectively improve the charge/discharge properties and the rate property. It is demonstrated that the as-prepared nanostructure LiNi0.5Mn1.5O4 samples have potential as cathode materials of lithium-ion battery for future new energy vehicles.

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