Results 41 to 50 of about 170,545 (305)

A H2 PEM fuel cell and high energy dense battery hybrid energy source for an urban electric vehicle [PDF]

open access: yes, 2005
Electric vehicles are set to play a prominent role in addressing the energy and environmental impact of an increasing road transport population by offering a more energy efficient and less polluting drive-train alternative to conventional internal ...
Bingham, C M, Schofield, N, Yap, H T
core   +1 more source

Enhanced Li‐Ion Battery Performance with Hybrid MXene/GnR Electrodes: Heterojunctions and Engineered Architectures Supported by DFT Mechanistic Studies for Improved Rate Performance, Stability & Capacity

open access: yesAdvanced Functional Materials, EarlyView.
Lithium‐ion batteries (LIBs) remain central to energy storage but suffer from slow ion transport and degradation. Here, we present a binder‐free Ti3C2Tx MXene/GnR hybrid electrode with a porous 3D architecture formed via freeze casting. The structure enhances conductivity, ion transport, and stability, delivering 401 mAh/g, ∼97% efficiency, and 92 ...
Sara Mohseni Taromsari   +10 more
wiley   +1 more source

A hybrid thrusting system for increasing the endurance time of multirotor unmanned aerial vehicles

open access: yesInternational Journal of Advanced Robotic Systems, 2023
One of the most significant disadvantages of electric multirotor unmanned aerial vehicles is their short flight time compared to fuel-powered unmanned aerial vehicles. This is mainly due to the low energy density of electric batteries. Fuel has much more
Jawad Bdour, Belal H Sababha
doaj   +1 more source

Engineering Strategies for Stable and Long‐Life Alkaline Zinc‐Based Flow Batteries

open access: yesAdvanced Functional Materials, EarlyView.
Alkaline zinc‐based flow batteries face persistent challenges from unstable zinc deposition, including dendrite growth, passivation, corrosion, and hydrogen evolution, which severely limit cycling stability. Current research addresses these issues through coordinated electrode structuring, electrolyte regulation, and membrane design to control zinc ...
Yuran Bai   +6 more
wiley   +1 more source

Comparative Analysis of Air Pollutant Emissions of Hybrid, Conventional, and Electric Vehicles Considering the Changing Electricity Production Sources in Poland

open access: yesEnergies
This paper contains a comparison of air pollutant emissions of different vehicle types and a presentation of the issue of assessing the environmental impact of hybrid, conventional, and electric vehicles in terms of the changing electricity production ...
Piotr Pryciński   +2 more
doaj   +1 more source

Predictive control strategies for energy saving of hybrid electric vehicles based on traffic light information

open access: yesJournal of Hebei University of Science and Technology, 2015
As the conventional control method for hybrid electric vehicle doesn’t consider the effect of known traffic light information on the vehicle energy management, this paper proposes a model predictive control intelligent optimization strategies based on ...
Kaijiang YU   +3 more
doaj   +1 more source

Multi‐Scale Interface Engineering of MXenes for Multifunctional Sensory Systems

open access: yesAdvanced Functional Materials, EarlyView.
MXenes, as two‐dimensional transition metal carbides and nitrides, demonstrate remarkable capabilities for multifunctional sensing applications. This review systematically examines multi‐scale interface engineering approaches that enhance sensing performance, enable diverse detection functionalities, and improve system‐level compatibility in MXene ...
Jiaying Liao, Sin‐Yi Pang, Jianhua Hao
wiley   +1 more source

Effect of Pressure Gradient on Flow and Heat Transfer over Surface-Mounted Heated Blocks in a Narrow Channel

open access: yesApplied Sciences
In this study, pressure gradient effects on heat transfer from block-like electronic chips are investigated computationally. The pressure gradient is provided by the slope given to the upper plate and starts just before the first block. Tilt angles of −2°
Dildar Gürses, Erhan Pulat
doaj   +1 more source

Step-by-Step Small-Signal Modeling and Control of a Light Hybrid Electric Vehicle Propulsion System

open access: yesEnergies, 2019
This paper develops step-by-step a complete electric model of a light hybrid electric vehicle propulsion system. This model includes the vehicle mass, the radius and mass of the wheels, the aerodynamic profile of the vehicle, the electric motor and the ...
Carmen Raga   +4 more
doaj   +1 more source

A Real-Time Prognostic-Based Control Framework for Hybrid Electric Vehicles

open access: yesIEEE Access, 2023
The increasing popularity of electric vehicles is driven by their compatibility with sustainable energy goals. However, the decline in the performance of energy storage systems, such as batteries, due to their degradation puts electric vehicles and ...
Laxman Timilsina   +7 more
doaj   +1 more source

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