Results 81 to 90 of about 214,082 (308)

Mechanism of Exact Transition between Cationic and Anionic Redox Activities in Cathode Material Li2FeSiO4. [PDF]

open access: yes, 2018
The discovery of anion redox activity is promising for boosting the capacity of lithium ion battery (LIB) cathodes. However, fundamental understanding of the mechanisms that trigger the anionic redox is still lacking.
Liu, Qihang   +8 more
core  

Valence evaluation of LiMnO2 and related battery materials by x-ray absorption spectroscopy

open access: yes, 2010
We present an x-ray absorption study of the oxidation states of transition-metal-ions of LiMnO2 and its related materials, widely used as cathodes in Li-ion batteries. The comparison between the obtained spectrum and the configuration-interaction cluster-
Chen, G.   +7 more
core   +1 more source

‘Oxygen Bound to Magnesium’ as High Voltage Redox Center Causes Sloping of the Potential Profile in Mg‐Doped Layered Oxides for Na‐Ion Batteries

open access: yesAdvanced Functional Materials, EarlyView.
Na‐ion batteries ‐ Impact of doping on the oxygen redox: The sloping potential of NaMg0.1Ni0.4Mn0.5O2 above 4.0 V is caused by a new redox center (arising from the ‘O bound to Mg’), having a higher potential but being more irreversible compared to the ‘O bound to Ni’.
Yongchun Li   +12 more
wiley   +1 more source

A new active cell equalizer for series connected Lithium-ion battery pack in electric vehicle application for fast equalization

open access: yesEnergy Conversion and Management: X
A Battery management system (BMS) is crucial for improving the Lithium-ion (Li-ion) battery performance and ensuring its safety in Electric vehicles (EVs). Consequently, a BMS is necessary for efficient cell balancing and monitoring.
Neha Khan   +5 more
doaj   +1 more source

A first Experimental Investigation of the Practical Efficiency of Battery Scheduling [PDF]

open access: yes, 2010
Nowadays, mobile devices are used more and more, and their battery lifetime is a key concern. In this paper, we concentrate on a method called battery scheduling with the aim to optimize the battery lifetime of mobile devices.
Graaf, Maurits de   +4 more
core   +2 more sources

Ultimate Li-ion batteries

open access: yesScience Bulletin, 2021
Deqing, Cao, Yuhui, Chen
openaire   +2 more sources

Tuning the Electronic Structure and Spin State of Fe─N─C Catalysts Using an Axial Oxygen Ligand and Fe Clusters for High‐Efficiency Rechargeable Zinc–Air Batteries

open access: yesAdvanced Functional Materials, EarlyView.
A FeN4─O/Clu@NC‐0.1Ac catalyst containing atomically‐dispersed FeN4─O sites (medium‐spin Fe2+) and Fe clusters delivered a half‐wave potential of 0.89 V for ORR and an overpotential of 330 mV at 10 mA cm−2 for OER in 0.1 m KOH. When the catalyst was used in a rechargeable Zn–air battery, a power density of 284.5 mW cm−2 was achieved with excellent ...
Yongfang Zhou   +8 more
wiley   +1 more source

Smarter Sensors Through Machine Learning: Historical Insights and Emerging Trends across Sensor Technologies

open access: yesAdvanced Functional Materials, EarlyView.
This review highlights how machine learning (ML) algorithms are employed to enhance sensor performance, focusing on gas and physical sensors such as haptic and strain devices. By addressing current bottlenecks and enabling simultaneous improvement of multiple metrics, these approaches pave the way toward next‐generation, real‐world sensor applications.
Kichul Lee   +17 more
wiley   +1 more source

Li-ion battery safety

open access: yes, 2017
The aim of this thesis was two folded: Numerically compute the combustion properties of the discharge materials from lithium-ion batteries, and experimentally measure the properties, at a test rig, by overheating lithium-ion batteries and igniting the vented mixture, and using a high-speed camera, pressure sensor and temperature senor to capture, and ...
openaire   +2 more sources

From Waste to Value: Conversion of Calcium Sulfate to Vaterite via Carbon Capture and Storage

open access: yesAdvanced Functional Materials, EarlyView.
This study introduces a new concept for carbon management that relies on the carbonation of industrial gypsum waste and yields phase‐pure vaterite at ambient conditions without any additives. The obtained vaterite is further shown to be a reactive material that develops compressive strength in aqueous suspensions like conventional cements.
Carlos Pimentel   +4 more
wiley   +1 more source

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