A5000809835- Advanced Battery Materials and Technologies
- Advancements in Battery Materials
- Advanced Battery Technologies Research
- Ionic liquids properties and applications
- Glass properties and applications
- Material Dynamics and Properties
- Supercapacitor Materials and Fabrication
- Advanced battery technologies research
- Advancements in Solid Oxide Fuel Cells
- Conducting polymers and applications
- Luminescence Properties of Advanced Materials
- Magnetic and transport properties of perovskites and related materials
- Solid-state spectroscopy and crystallography
- Fuel Cells and Related Materials
- Electrochemical Analysis and Applications
- Extraction and Separation Processes
- Electron and X-Ray Spectroscopy Techniques
- Phase-change materials and chalcogenides
- Perovskite Materials and Applications
- Electrochemical sensors and biosensors
- Thermal Expansion and Ionic Conductivity
- Advanced Condensed Matter Physics
- Surfactants and Colloidal Systems
- Spectroscopy and Quantum Chemical Studies
- Bone Tissue Engineering Materials
Chalmers University of Technology
2015-2024
Wallenberg Wood Science Center
2022-2024
Institute of Materials Science
2024
Göteborgs Stads
2014-2021
Material Physics Center
2021
University of Potsdam
2018-2020
University of Southern Denmark
2020
Brigham Young University
2020
Xi'an Jiaotong University
2020
Ion Beam Applications (Belgium)
2019
Due to an ultrahigh theoretical specific capacity of 3860 mAh g-1, lithium (Li) is regarded as the ultimate anode for high-energy-density batteries. However, practical application Li metal hindered by safety concerns and low Coulombic efficiency both which are resulted fromunavoidable dendrite growth during electrodeposition. This study focuses on a critical parameter electrodeposition, exchange current density, has attracted only little attention in research A phase-field model presented...
Abstract Nonuniform electrodeposition of lithium during charging processes is the key issue hindering development rechargeable Li metal batteries. This deposition process largely controlled by solid electrolyte interphase (SEI) on surface and design artificial SEIs an essential pathway to regulate Li. In this work, electro‐chemo‐mechanical model built implemented in a phase‐field modelling understand correlation between physical properties The results show that improving ionic conductivity...
Abstract The application of lithium metal as an anode material for next generation high energy‐density batteries has to overcome the major bottleneck that is seemingly unavoidable growth Li dendrites caused by non‐uniform electrodeposition on electrode surface. This problem must be addressed clarifying detailed mechanism. In this work mass‐transfer Li‐ions investigated, a key process controlling electrochemical reaction. By phase field modeling approach, Li‐ion concentration and electric...
Abstract NASCION‐type Li conductors have great potential to bring high capacity solid‐state batteries realization, related its properties such as ionic conductivity, stability under ambient conditions, wide electrochemical window, and inexpensive production. However, their chemical thermal instability toward metallic lithium (Li) has severely hindered attempts utilize anode material in NASCION‐based battery systems. In this work, it is shown how a tailored multifunctional interlayer between...
Abstract We here report on the conformational evolution of bis(trifluoromethanesulfonyl)imide anion (TFSI − ) in protic and aprotic TFSI ‐based ionic liquids as a function temperature. The investigation is performed by Raman spectroscopy spectral ranges 240‐380 cm −1 715‐765 , where interference from bands due to cations negligible. contribution each conformation, i.e. cisoid ( C 1 transoid 2 ), quantified order estimate enthalpy change, Δ H which found be range 3.4–7.3 kJ/mol liquid state....
A new comparative investigation of lithium sulfur cells employing a tetraethylene glycol dimethyl ether–lithium trifluoromethanesulfonate (TEGDME-LiCF3SO3) electrolyte charged by various polysulfide species (Li2S2, Li2S4, Li2S6, and Li2S8) is here reported. We carefully detect the effects addition originally combining X-ray photoelectron spectroscopy (XPS) electrochemical impedance (EIS). The measurements clearly reveal how affects nature composition solid interphase (SEI) in terms...
Janus graphene stacks as artificial graphite allow the reversible intercalation of sodium ions.
Abstract Efficient lithium metal stripping and plating operation capable of maintaining electronic ionic conductivity is crucial to develop safe batteries. However, monitoring microstructure evolution during cell cycling challenging. Here, we report the development an operando synchrotron X-ray tomographic microscopy method probing in real-time formation, growth, dissolution Li microstructures a Li||Cu containing standard non-aqueous liquid electrolyte solution. The analyses measurements...
The phase behavior and the ionic conductivity of liquids (ILs) N-alkyl-N-alkylpyrrolidinium (PYR(xy)) cation bis(trifluoromethanesulfonyl)imide (TFSI) anion are investigated upon addition LiTFSI salt. We compare case two new ILs PYR(2y) (where 2 is ethyl y butyl or propyl) with that PYR(14) 1 methyl 4 butyl). find increases glass transition temperature, decreases melting temperature heat fusion and, in family, suppresses crystallization. In solid state, significant conductivities found,...
We have investigated the physical properties of proton conducting polymer membranes based on a protic ionic liquid (IL). Properties such as conductivity, melting point phase, and glass transition temperature phase are studied function IL/polymer ratio temperature. observe an increased thermomechanical stability membrane with increasing content. However, there is concomitant decrease in conductivity This larger than what can be expected from dilution IL by insulating matrix. The origin this...
We report on the influence of lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) doping glass transition temperature (Tg), ionic conductivity, and Li-ion coordination two dicationic liquids (DILs) based TFSI anion. The results are compared to behaviour traditional mono-cationic liquids. cations DILs contain imidazolium rings, connected by a decane hydrocarbon chain. Homogeneous mixtures these ILs LiTFSI can be obtained in large concentration range. With increasing Li-salt conductivity...
Abstract Sulfur electrodes confined in an inert carbon matrix show practical limitations and concerns related to low cathode density. As a result, these require large amount of electrolyte, normally three times more than the volume used commercial Li‐ion batteries. Herein, high‐energy high‐performance lithium–sulfur battery concept, designed achieve high capacity with minimum electrolyte is proposed. It based on deposition polysulfide species self‐standing highly conductive nanofiber...
Liquid monohydroxy alcohols exhibit unusual dynamics related to their hydrogen bonding induced structures. The connection between structure and is studied for liquid 1-propanol using quasi-elastic neutron scattering, combining time-of-flight spin-echo techniques, with a focus on the at length scales corresponding main peak pre-peak of factor. At peak, structural relaxation times are probed. These correspond well mechanical calculated from literature data. pre-peak, H-bonded structures,...