The silicon anode suffers from significant volume expansion, low electrical conductivity, and poor long-term cycling performance, which collectively limit its potential to replace graphite as the anode material for lithium-ion batteries. In this article, a PAA-p(HEA-SBMA) binder was prepared by an in situ thermal cross-linking method, which combines strong mechanical properties and excellent reaction kinetics. The synergy of covalent bonding, dynamic hydrogen bonding, and ionic interactions in the binder structure provides excellent mechanical strength, which effectively dissipates stresses and "locks" the entire structure. In addition, the zwitterionic monomers in the binder structure improve the transport of lithium-ions and promote lithium salt dissociation, which helps to establish a stable solid electrolyte interphase (SEI). Thanks to the structural locking mechanism and dynamic ionic regulation function, the PAA-p(HEA-SBMA) binder exhibited a long cycling performance. Even after 1000 cycles at 0.5 C, it still has a discharge capacity of 981.63 mAh g. The multifunctional binder designs in this work provide insights into the advancement of high energy density lithium-ion batteries.
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http://dx.doi.org/10.1021/acsami.4c16492 | DOI Listing |
Arch Biochem Biophys
December 2024
Department of Pharmaceutical Sciences, School of Health Sciences and Technology, UPES Dehradun - 248007, Uttarakhand, India. Electronic address:
KRAS (Kirsten rat sarcoma viral oncogene homologue), the most common mutated protein in human cancers, is the leading cause of morbidity and mortality. Before Sotorasib (AMG-510) was approved for non-small cell lung cancer treatment in 2020, the oncogenic KRAS mutations were believed to be non-druggable. High-resolution X-ray crystal structures of GDP-bound KRAS mutants with and without inhibitor resolved.
View Article and Find Full Text PDFACS Nano
December 2024
Department of Materials Science and Engineering, National University of Singapore, Singapore117575, Singapore.
A Rashba spin-splitting state with spin-momentum locking enables the charge-spin interconversion known as the Rashba effect, induced by the interplay of inversion symmetry breaking (ISB) and spin-orbit coupling (SOC). Enhancing spin-splitting strength is promising to achieve high spin-orbit torque (SOT) efficiency for low-power-consumption spintronic devices. However, the energy scale of natural ISB at the interface is relatively small, leading to the weak Rashba effect.
View Article and Find Full Text PDFNanoscale Horiz
December 2024
Electrical and Computer Engineering, The Grainger College of Engineering, University of Illinois Urbana-Champaign, Urbana, USA.
Antiferromagnetic materials have several unique properties, such as a vanishingly small net magnetization, which generates weak dipolar fields and makes them robust against perturbation from external magnetic fields and rapid magnetization dynamics, as dictated by the geometric mean of their exchange and anisotropy energies. However, experimental and theoretical techniques to detect and manipulate the antiferromagnetic order in a fully electrical manner must be developed to enable advanced spintronic devices with antiferromagnets as their active spin-dependent elements. Among the various antiferromagnetic materials, conducting antiferromagnets offer high electrical and thermal conductivities and strong electron-spin-phonon interactions.
View Article and Find Full Text PDFSmall
December 2024
School of Chemistry and Molecular Engineering, In Situ Devices Research Center, Shanghai Key Laboratory for Urban Ecological Processes and Eco-Restoration, East China Normal University, Shanghai, 200241, China.
The pursuit of creating materials that replicate the flexibility, stability, and advanced perceptual capabilities of human skin, attributes honed through natural evolution, represents a long-term objective in pioneering fields such as electronic skin (e-skin) research. However, conventional e-skin often struggles with stability and functionality in harsh sports environments, resulting in the degradation of the intimate interface over time. Inspired by the innate biphasic structure of human subcutaneous tissue, an adaptive phase-locked e-skin (APLE) is presented, designed to seamlessly conform to dynamic sports environments, offering robust applications in sports physiology and medical contexts without malfunctioning.
View Article and Find Full Text PDFPhys Rev E
November 2024
Department of Physics and State Key Laboratory of Surface Physics, Fudan University, Shanghai 200433, China.
We investigate synchronization behaviors of a Kuramoto oscillator network with a two-dimensional square-lattice configuration. We show that the oscillator network can reach a phase-locking vortex synchronized state in the long time limit starting from random initial oscillator phases sampled according to the von Mises distribution characterized by a zero mean and a finite concentration parameter. We further reveal that the stability of the vortex synchronized state is sensitive to the presence of local node defects, in contrast to the usual knowledge that oscillator networks should exhibit robustness against local perturbations.
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