Mechanistic modeling of polysulfide shuttle and capacity loss in lithium–sulfur batteries

modeling loss data by phase-type distribution

بیمه گران همیشه بابت خسارات بیمه نامه های تحت پوشش خود نگران بوده و روش هایی را جستجو می کنند که بتوانند داده های خسارات گذشته را با هدف اتخاذ یک تصمیم بهینه مدل بندی نمایند. در این پژوهش توزیع های فیزتایپ در مدل بندی داده های خسارات معرفی شده که شامل استنباط آماری مربوطه و استفاده از الگوریتم em در برآورد پارامترهای توزیع است. در پایان امکان استفاده از این توزیع در مدل بندی داده های گروه بندی ...

Polysulfide flow batteries enabled by percolating nanoscale conductor networks.

A new approach to flow battery design is demonstrated wherein diffusion-limited aggregation of nanoscale conductor particles at ∼1 vol % concentration is used to impart mixed electronic-ionic conductivity to redox solutions, forming flow electrodes with embedded current collector networks that self-heal after shear. Lithium polysulfide flow cathodes of this architecture exhibit electrochemical ...

Online Full Charge Capacity Modeling of Smartphone Batteries

Full charge capacity (FCC) refers to the amount of energy a battery can hold. It is the fundamental property of smartphone batteries that diminishes as the battery ages and is charged/discharged. We investigate the behavior of smartphone batteries while charging and demonstrate that the battery voltage and charging rate information can together characterize the FCC of a battery. We propose a ne...

Highly reversible lithium/dissolved polysulfide batteries with carbon nanotube electrodes.

Tailoring Surface Acidity of Metal Oxide for Better Polysulfide Entrapment in LiS Batteries

© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim 1 wileyonlinelibrary.com transport of PS into electrolyte under high concentration gradient and internal electric field. Introducing chemical interaction between functional groups/polar sites on the host with PS is emerging as a more effective approach for caging sulfur species.[5] Recent reports found that using functionalized carbon[6,7] and m...