Results 41 to 50 of about 11,758 (294)

Hydrogen‐Bond‐Rich Supramolecular Multiblock Copolymers Facilitate Rapid Zn2+ Migration in Quasi‐Solid‐State Zinc‐Ion Batteries

Advanced Functional Materials, EarlyView.
The disordered growth of dendrites, corrosion, parasitic side reactions, slow de‐solvation kinetics, and inherent safety risks significantly hinder the practical deployment of conventional liquid electrolyte zinc‐ion batteries. In contrast, the novel PU‐EG+DMPA‐Zn polyurethane quasi‐solid‐state electrolyte, enriched with abundant polar functional ...
Ruiqi Liu, Changding Wang, Fu Wan, Kaida Hu, Da Yang, Yaoyang Xia, Wenwei Yin, Yupeng Lin, Yuejiao Chen, Shuhui Sun, Weigen Chen   +10 more
wiley   +1 more source

Deformation and Degradation in 18650 Li‐Ion Cells Under Freeze‐Thaw Cycling

Advanced Functional Materials, EarlyView.
This study investigates the impact of freezethaw degradation of 18650 cells via combined electrochemical and x‐ray imaging studies. High‐resolution synchrotron X‐ray tomography reveals deformation of the jelly‐roll structure and delamination of electrode active materials in cells cycled at 1C and 4C. These structural changes are quantitatively assessed
Xunkai Chen, Nicole M. Callen, Nghia T. Vo, Michael Drakopoulos, Zhong Zhong, Kelsey B. Hatzell   +5 more
wiley   +1 more source

Influence of the Arrangement of the Cells/Modules of a Traction Battery on the Spread of Fire in Case of Thermal Runaway

Batteries
When designing the battery of an electric vehicle, different parameters must be considered to obtain the safest arrangement of the battery/modules/cells from the mechanical and thermal points of view.
Ana Olona, Luis Castejón
doaj   +1 more source

Quantitative spatiotemporal mapping of thermal runaway propagation rates in lithium-ion cells using cross-correlated Gabor filtering [PDF]

, 2021
Anand N. P. Radhakrishnan, Mark Buckwell, Martin Pham, Donal P. Finegan, Alexander Rack, Gareth Hinds, Dan J. L. Brett, Paul R. Shearing   +7 more
openalex   +2 more sources

Friction forces on phase transition fronts [PDF]

, 2013
In cosmological first-order phase transitions, the microscopic interaction of the phase transition fronts with non-equilibrium plasma particles manifests itself macroscopically as friction forces.
Megevand, Ariel
core   +2 more sources

A Tracer Diffusion Study of Diverse Photo‐Ionic Phenomena in Strontium Titanate

Advanced Functional Materials, EarlyView.
Two strong interfacial photo‐ionic effects are demonstrated for the model system SrTiO3 through the application of isotope exchange experiments: UV illumination is found to enhance the oxygen surface exchange coefficient by several orders of magnitude and to depress the surface space‐charge potential substantially.
David M. Schwenkel, Timon F. Kielgas, George F. Harrington, Roger A. De Souza   +3 more
wiley   +1 more source

Magneto-optical imaging of magnetic deflagration in Mn12-Acetate [PDF]

, 2008
For the first time, the morphology and dynamics of spin avalanches in Mn12-Acetate crystals using magneto-optical imaging has been explored. We observe an inhomogeneous relaxation of the magnetization, the spins reversing first at one edge of the crystal
Gheorghe, D., Hernandez, J. M., Hernández-Mínguez, A., Macià, F., Tejada, J., Villuendas, D., Wijngaarden, R. J.   +6 more
core   +3 more sources

Electrochemical Abuse‐Driven Thermal Runaway in Lithium‐Ion Batteries: Evolution From Beginning‐of‐Life to End‐of‐Life

Advanced Functional Materials, EarlyView.
Electrochemical abuse transforms thermal runaway behavior in lithium‐ion batteries. Through systematic decoupling of degradation mechanisms, this study reveals that lithium plating lowers the onset temperature by 10 °C, electrolyte consumption delays high‐temperature reactions, and capacity fade reduces total heat generation. These mechanistic insights
San Hwang, Sungjae Seo, Munsoo Song, Chihyun Nam, Juwon Kim, Yujeong Hwang, Songha Seo, Jaejung Song, Sugeun Jo, Hongjin Lim, Sung Pil Woo, SoHee Kim, Jongwoo Lim   +12 more
wiley   +1 more source

Thermal runaway and flame propagation in battery packs: numerical simulation and deep learning prediction

Engineering Applications of Computational Fluid Mechanics
The widespread application of lithium-ion battery technology faces a significant challenge from the inherent risk of thermal runaway and consequent fire spread.
Zilong Wang, Hosein Sadeghi, Xinyan Huang, Francesco Restuccia   +3 more
doaj   +1 more source

Plus Charge Prevalence in Cosmic Rays: Room for Dark Matter in the Positron Spectrum

, 2016
The unexpected energy spectrum of the positron/electron ratio is interpreted astrophysically, with a possible exception of the 100-300 GeV range. The data indicate that this ratio, after a decline between $0.5-8$ GeV, rises steadily with a trend towards ...
Diamond, P. H., Malkov, M. A., Sagdeev, R. Z.   +2 more
core   +1 more source