16,389 research outputs found
Recommended from our members
Revealing Nanoscale Solid-Solid Interfacial Phenomena for Long-Life and High-Energy All-Solid-State Batteries.
Enabling long cyclability of high-voltage oxide cathodes is a persistent challenge for all-solid-state batteries, largely because of their poor interfacial stabilities against sulfide solid electrolytes. While protective oxide coating layers such as LiNbO3 (LNO) have been proposed, its precise working mechanisms are still not fully understood. Existing literature attributes reductions in interfacial impedance growth to the coating's ability to prevent interfacial reactions. However, its true nature is more complex, with cathode interfacial reactions and electrolyte electrochemical decomposition occurring simultaneously, making it difficult to decouple each effect. Herein, we utilized various advanced characterization tools and first-principles calculations to probe the interfacial phenomenon between solid electrolyte Li6PS5Cl (LPSCl) and high-voltage cathode LiNi0.85Co0.1Al0.05O2 (NCA). We segregated the effects of spontaneous reaction between LPSCl and NCA at the interface and quantified the intrinsic electrochemical decomposition of LPSCl during cell cycling. Both experimental and computational results demonstrated improved thermodynamic stability between NCA and LPSCl after incorporation of the LNO coating. Additionally, we revealed the in situ passivation effect of LPSCl electrochemical decomposition. When combined, both these phenomena occurring at the first charge cycle result in a stabilized interface, enabling long cyclability of all-solid-state batteries
Unusual high-pT jet events at HERA
We calculate the cross-section for events at HERA where the proton loses only
a minute fraction of its initial energy, all of which goes into producing a
single pair of transverse jets.Comment: 4 pages plus figure
A dark energy multiverse
We present cosmic solutions corresponding to universes filled with dark and
phantom energy, all having a negative cosmological constant. All such solutions
contain infinite singularities, successively and equally distributed along
time, which can be either big bang/crunchs or big rips singularities.
Classicaly these solutions can be regarded as associated with multiverse
scenarios, being those corresponding to phantom energy that may describe the
current accelerating universe
Stodolsky's Theorem and Neutrino Oscillation Phases -- for pedestrians
Neutrino oscillations are experimentally observable only as a result of
interference between neutrino states with different masses and THE SAME ENERGY.
All interference effects between neutrino states having different energies are
destroyed by the intereaction between the incident neutrino and the neutrino
detector. Erroneous results are frequently obtained by neglecting the
neutrino-detector interactions.Comment: 6 pages, Two paragraphs of discussion on possible time measurements
added at en
Theory of single-particle properties of the Hubbard model
It is shown that it is possible to quantitatively explain quantum Monte Carlo
results for the Green's function of the two-dimensional Hubbard model in the
weak to intermediate coupling regime. The analytic approach includes vertex
corrections in a paramagnon-like self-energy. All parameters are determined
self-consistently. This approach clearly shows that in two dimensions
Fermi-liquid quasiparticles disappear in the paramagnetic state when the
antiferromagnetic correlation length becomes larger than the electronic thermal
de Broglie wavelength.Comment: 5 pages, latex, uuencoded figures, REVTEX Also available by direct
request to [email protected]
Spin filtering by a periodic nanospintronic devices
For a linear chain of diamond-like elements, we show that the Rashba
spin-orbit interaction (which can be tuned by a perpendicular gate voltage) and
the Aharonov-Bohm flux (due to a perpendicular magnetic field) can combine to
select only one propagating ballistic mode, for which the electronic spins are
fully polarized along a direction that can be tuned by the electric and
magnetic fields and by the electron energy. All the other modes are evanescent.
For a wide range of parameters, this chain can serve as a spin filter.Comment: Published versio
- …