Results 61 to 70 of about 51,498 (257)

Unified Analytical Framework for Understanding the Operational Stability of Blue Phosphorescent OLEDs: Quantitative Insights Into Exciton Recycling and Bimolecular Interactions

Advanced Functional Materials, EarlyView.
Blue phosphorescent OLEDs remain limited by poor operational stability. Here, a unified analytical framework integrating transient photoluminescence and magneto‐electroluminescence is developed to correlate intrinsic material photophysics with electrically driven degradation.
Hakjun Lee, Bum June Park, Taekyung Kim
wiley   +1 more source

Controlled Engineering of 2D Alkali‐Iron‐Chloride Compounds and Lateral Quantum Heterostructures Within Confined Graphene Nanoreactors

Advanced Functional Materials, EarlyView.
This work presents a programmable atomic engineering strategy for 2D materials using Å‐scale nanoreactors formed by bilayer graphene (BLG) intercalation. A new class of alkali‐iron‐chloride compounds, along with lateral heterostructures composed of monolayer alkali halides and iron chlorides, is revealed.
Haiming Sun, Qiunan Liu, Yung‐Chang Lin, Mahdi Ghorbani‐Asl, Hiroki Ago, Arkady V. Krasheninnikov, Kazu Suenaga   +6 more
wiley   +1 more source

State of Charge Estimation in Batteries for Electric Vehicle Based on Levenberg–Marquardt Algorithm and Kalman Filter

World Electric Vehicle Journal
A new optimization method for estimating the State of Charge (SOC) of battery charge state is proposed. This method incorporates the Levenberg–Marquardt Algorithm (LMA) for online parameter identification and the Extended Kalman Filter (EKF) for SOC.
Qian Huang, Junting Li, Qingshan Xu, Chao He, Chenxi Yang, Li Cai, Qipin Xu, Lihong Xiang, Xiaojiang Zou, Xiaochuan Li   +9 more
doaj   +1 more source

Grid‐supportive electric vehicle charging methodology with energy management for coordinated frequency control

IET Generation, Transmission & Distribution, 2021
This paper proposes a vehicle‐to‐grid (V2G) operation methodology of electric vehicles (EVs) for frequency regulation, EV charging, and state‐of‐charge (SOC) management.
Jae Woong Shim, Gregor Verbič, Kyeon Hur   +2 more
doaj   +1 more source

Time‐Resolved Magnetization Switching Dynamics Driven by Orbital Torques

Advanced Functional Materials, EarlyView.
Du et al. reveal nanosecond magnetization switching driven by orbital currents using time‐resolved Hall detection. The measurements separate domain nucleation from domain wall propagation and show that Joule heating strongly assists switching by lowering energy barriers.
Ao Du, Shilei Ding, Min‐Gu Kang, Marco Hoffmann, Pietro Gambardella   +4 more
wiley   +1 more source

Deep Learning in the State of Charge Estimation for Li-Ion Batteries of Electric Vehicles: A Review

Machines, 2022
As one of the critical state parameters of the battery management system, the state of charge (SOC) of lithium batteries can provide an essential reference for battery safety management, charge/discharge control, and the energy management of electric ...
Dawei Zhang, Chen Zhong, Peijuan Xu, Yiyang Tian   +3 more
doaj   +1 more source

Nano‐Scale Characterization of Impurities Segregation in Solid Oxide Electrolysis Cells

Advanced Functional Materials, EarlyView.
Cathodic polarization induces impurity segregation in Ni, forming an amorphous Na─Al─Si─O amorphous phase at grain boundaries. Under ultralow oxygen partial pressure, multiple elements dissolve, migrate, and reoxidize within the metal. A patterned model system provides direct nanoscale evidence, clarifying the mechanism of polarization‐driven impurity ...
Zhongtao Ma, Qingjie Wang, Bowen Li, Vasileios Bilalis, Søren Bredmose Simonsen, Ming Chen   +5 more
wiley   +1 more source

Microscopic Insights into Magnetic Warping and Time‐Reversal Symmetry Breaking in Topological Surface States of Rare‐Earth‐Doped Bi2Te3

Advanced Materials, EarlyView.
Magnetic doping of the topological insulator Bi2Te3 with erbium adatoms induces out‐of‐plane magnetism and breaks time‐reversal symmetry, opening a Dirac gap and driving a Fermi surface transition from hexagonal to star‐of‐David geometry. Microscopy, spectroscopy, and magnetic dichroism reveal atomically controlled magnetic interactions that tailor the
Beatriz Muñiz Cano, Fabián Calleja, Ji Dai, Massimo Tallarida, Vera Marinova, Alessandro Barla, Marc G. Cuxart, Pierluigi Gargiani, Gonzalo N. Molina, José Angel Silva‐Guillén, Adriana I. Figueroa, Kevin García‐Díez, Sergio O. Valenzuela, Aitor Mugarza, Amadeo L. Vázquez de Parga, Rodolfo Miranda, Francisco Guinea, Manuela Garnica, Miguel A. Valbuena   +18 more
wiley   +1 more source

Energy management strategy of Battery Energy Storage Station (BESS) for power grid frequency regulation considering battery SOX

Energy Reports, 2023
In recent years, the application of BESS in power system has been increasing. If lithium-ion batteries are used, the greater the number of batteries, the greater the energy density, which can increase safety risks.
Xiangjun Li, Hanning Li, Baomin Fang, Lianfang Wang, Yanhe Li, Lizhi Dong   +5 more
doaj   +1 more source

State-of-charge indication for portable applications [PDF]

, 2005
The known methods of state-of-charge (SoC) indication in portable applications are not accurate enough under all practical conditions. The method presented in this paper aims at designing and testing an SoC indication system capable of predicting the ...
Regtien, Paulus P.L., Pop, V, Pop, V., Notten, P.H.L., Notten, PHL Peter, V. Pop, Bergveld, HJ Henk Jan, Regtien, PPL, P.H.L. Notten, H.J. Bergveld, Bergveld, H.J., Regtien, P.P.L., P.P.L. Regtien   +12 more
core   +1 more source