Identifying the redox activity of cation-disordered Li–Fe–V–Ti oxide cathodes for Li-ion batteries
Literature Information
Ralf Witte, Ralf Heinzmann, Shuhua Ren, Stefan Mangold, Horst Hahn, Rolf Hempelmann, Helmut Ehrenberg
Cation-disordered oxides have recently shown promising properties on the way to explore high-performance intercalation cathode materials for rechargeable Li-ion batteries. Here, stoichiometric cation-disordered Li2FeVyTi1−yO4 (y = 0, 0.2, 0.5) nanoparticles are studied. The substitution of V for Ti in Li2FeVyTi1−yO4 increases the content of active transition metals (Fe and V) and accordingly the amount of Li+ (about (1 + y)Li+ capacity per formula unit) that can be reversibly intercalated. It is found that Fe3+/Fe2+ and V4+/V3+ redox couples contribute to the overall capacity performance, whereas Ti4+ remains mainly inert. There is no evidence for the presence of Fe4+ species after charging to 4.8 V, as confirmed from the ex situ57Fe Mössbauer spectroscopy and the Fe K-edge absorption spectra. The redox couple reactions for iron and vanadium are examined by performing in situ synchrotron X-ray absorption spectroscopy. During charging/discharging, the spectral evolution of the K-edges for Fe and V confirms the reversible Fe3+/Fe2+ and V4+/V3+ redox reactions during cycling between 1.5 and 4.8 V.
Related Literature
Molecular simulation of enhanced separation of humid air components using GO–PVA nanocomposite membranes under differential pressures
Yilin Liu, Jincai Su, Fei Duan, Xin Cui, Weichao Yan, Liwen Jin
DOI: 10.1039/D2CP01411D
Predicting spinel solid solutions using a random atom substitution method
Robert C. Dickson, Troy D. Manning, Edwin S. Raj, Jonathan C. S. Booth, Matthew J. Rosseinsky, Matthew S. Dyer
DOI: 10.1039/D2CP02180C
Three-centre two-electron bonds from the quantum interference perspective‡
David Wilian Oliveira de Sousa, Marco Antonio Chaer Nascimento
DOI: 10.1039/D2CP00841F
[1]Benzothieno[3,2-b][1]benzothiophene-based dyes: effect of the ancillary moiety on mechanochromism and aggregation-induced emission
Rajamouli Boddula
DOI: 10.1039/D2CP01934E
Preparation of amphiphilic copolymers via base-catalyzed hydrolysis of quaternized poly[2-(dimethylamino)ethyl methacrylate]
Vladislav Y. Shevtsov, Ting-Yi Hsin, Yeong-Tarng Shieh
DOI: 10.1039/D1PY01697K
Heat managing organic materials: phase change materials with high thermal conductivity and shape stability
Hyeyoon Ko, Dong-Gue Kang, Minwoo Rim, Jahyeon Koo, Seok-In Lim, Eunji Jang, Dongmin Yu, Myong-Jae Yoo, Namil Kim, Kwang-Un Jeong
DOI: 10.1039/D1PY01318A
SANS characterization of time dependent, slow molecular exchange in an SDS micellar system
Jae-Min Ha, Youngkyu Han
DOI: 10.1039/D2CP00930G
The transferability limits of static benchmarks
Thomas Weymuth, Markus Reiher
DOI: 10.1039/D2CP01725C
Quantum spin Hall effect in tilted penta silicene and its isoelectronic substitutions
Lijin Zhan, Yimei Fang, Ruotong Zhang, Xiancong Lu, Tie-yu Lü, Shunqing Wu
DOI: 10.1039/D2CP01390H
You might also like
What precautions should be taken when handling 2-Methyl-2-propanyl 5-amino-2-thiophenecarboxylate (CAS: 1498311-57-1)?
When handling 2-Methyl-2-propanyl 5-amino-2-thiophenecarboxylate (CAS: 1498311-5...
What are the physical and chemical properties of 5-Bromo-1,2-dichloro-3-fluorobenzene (CAS: 1000572-93-9)?
5-Bromo-1,2-dichloro-3-fluorobenzene (CAS: 1000572-93-9) is a crystalline solid ...
How should (2R)-2-Amino-2-(4-bromophenyl)ethanol (CAS: 354153-64-3) be stored?
(2R)-2-Amino-2-(4-bromophenyl)ethanol (CAS: 354153-64-3) should be stored in a c...
What regulatory guidelines apply to Methyl 4-(aminomethyl)tetrahydro-2H-pyran-4-carboxylate hydrochloride (CAS: 362707-24-2)?
Methyl 4-(aminomethyl)tetrahydro-2H-pyran-4-carboxylate hydrochloride (CAS: 3627...
What are the main uses of 1,4-dimethyl-1H-pyrazole-5-sulfonyl chloride (CAS: 1174834-52-6)?
1,4-Dimethyl-1H-pyrazole-5-sulfonyl chloride is primarily used as an intermediat...
Is Dinaphtho[1,2-b:2',1'-d]furan (CAS: 239-69-0) safe?
Dinaphtho[1,2-b:2',1'-d]furan is generally safe when handled with appropriate pe...
What is the market or research trend for 7-Methyl-7,9-dihydro-1H-purine-2,6,8(3H)-trione (CAS: 612-37-3)?
The market for 7-Methyl-7,9-dihydro-1H-purine-2,6,8(3H)-trione (CAS: 612-37-3) i...
What are the physical and chemical properties of 2-(4-Chlorophenyl)malonaldehyde (CAS: 205676-17-1)?
2-(4-Chlorophenyl)malonaldehyde (CAS: 205676-17-1) is a colorless or light yello...
How is 2-Methylchrysene (CAS: 3351-32-4) typically synthesized?
2-Methylchrysene (CAS: 3351-32-4) is typically synthesized via the reaction of c...
Is N-(6-aminopyrimidin-4-yl)acetamide (CAS: 89533-23-3) safe?
N-(6-aminopyrimidin-4-yl)acetamide (CAS: 89533-23-3) is generally considered saf...
Source Journal
Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.










![2-Bromo-7-chloro-4H-pyrrolo[2,3-b]pyrazine structure 2-Bromo-7-chloro-4H-pyrrolo[2,3-b]pyrazine structure](https://static.chemtradehub.com/structs/115/1150617-58-5-0b0a.webp)

![2,5-Dichloro-1H-pyrrolo[3,2-b]pyridine structure 2,5-Dichloro-1H-pyrrolo[3,2-b]pyridine structure](https://static.chemtradehub.com/structs/100/1000342-87-9-f632.webp)

