Results 91 to 100 of about 1,119,425 (349)

Controll Electronics for Effective Supplying of Equipment with Li-Ion Accu by Solar Cells [PDF]

open access: yes, 2008
Bakalářská práce je zaměřena na problematiku získávání a uchování elektrické energie ze slunečního záření. Cílem této práce je vytvořit efektivní nabíjecí systém Lithium-Iontové baterie pomocí solárních článků.
Horký, Luděk
core  

Understanding and Optimizing Li Substitution in P2‐Type Sodium Layered Oxides for Sodium‐Ion Batteries

open access: yesAdvanced Functional Materials, EarlyView.
This work explores Li‐substituted P2 layered oxides for Na‐ion batteries by crystallographic and electrochemical studies. The effect of lithium on superstructure orderings, on phase transitions during synthesis and electrochemical cycling and on the interplay of O‐ versus TM‐redox is revealed via various advanced techniques, including semi‐simultaneous 
Mingfeng Xu   +5 more
wiley   +1 more source

Optimizing interfacial stability of sulfurized polyacrylonitrile batteries by fluorinated composite polymer electrolytes

open access: yesAdvanced Industrial and Engineering Polymer Research
Sulfurized polyacrylonitrile (SPAN) is a promising cathode to address the notorious polysulfide shuttle effect sluggish and reaction dynamics of traditional lithium-sulfur (Li–S) batteries through its conductive pyridinic framework.
Junshi Zhang   +9 more
doaj   +1 more source

Enhancing Low‐Temperature Performance of Sodium‐Ion Batteries via Anion‐Solvent Interactions

open access: yesAdvanced Functional Materials, EarlyView.
DOL is introduced into electrolytes as a co‐solvent, increasing slat solubility, ion conductivity, and the de‐solvent process, and forming an anion‐rich solvent shell due to its high interaction with anion. With the above virtues, the batteries using this electrolyte exhibit excellent cycling stability at low temperatures. Abstract Sodium‐ion batteries
Cheng Zheng   +7 more
wiley   +1 more source

Advanced Co3O4 interlayer as an efficient polysulfide barrier for high-performance Li-S batteries

open access: yesInternational Journal of Electrochemical Science, 2019
In this paper, Co3O4 powders were firstly prepared via hydrothermal reaction. Then, Co3O4 powder was used as interlayer and applied into Li-S battery.
Li Xiao-qingl, Ma Yu-bo, Tang Cheng-li
doaj   +1 more source

Universally Near Optimal Online Power Control for Energy Harvesting Nodes

open access: yes, 2016
We consider online power control for an energy harvesting system with random i.i.d. energy arrivals and a finite size battery. We propose a simple online power control policy for this channel that requires minimal information regarding the distribution ...
Shaviv, Dor, Özgür, Ayfer
core   +1 more source

Unlocking Ultra‐Long Cycle Stability of Li Metal Electrode by Separators Modified by Porous Red Phosphorus Nanosheets

open access: yesAdvanced Functional Materials, EarlyView.
Coating the standard polypropylene separator with a porous red phosphorous nanosheet greatly improves cycling performance in Li electrode cells. The phosphorus‐based surface chemistry deactivates electrolyte solvent decomposition and enhances the cleavage of F‐containing salt, resulting in an inorganic‐dominated electrolyte interphase (SEI) composition
Jiangpeng Wang   +9 more
wiley   +1 more source

Biomass-derived Activated Carbon for Rechargeable Lithium-Sulfur Batteries

open access: yesBioResources, 2014
High-surface-area activated carbon (HSAAC) was synthesized by carbonizing coconut shells and subsequently activating the material with KOH. The as-prepared HSAAC had a mostly microporous structure (with small mesoporous inclusions) and exhibited a high ...
Min Liu   +8 more
doaj   +1 more source

Lithium-Sulfur Battery: Chemistry, Challenges, Cost, and Future [PDF]

open access: yes, 2016
Lithium sulfur (Li-S) battery has higher theoretical and experimental specific energy. There- fore, Li-S battery is the most capable energy storage option for electrical vehicles and power grid.
Patel, K.
core   +1 more source

High‐Fluorinated Electrolytes for Li–S Batteries

open access: yesAdvanced Energy Materials, 2019
AbstractRechargeable Li–S batteries are regarded as one of the most promising next‐generation energy‐storage systems. However, the inevitable formation of Li dendrites and the shuttle effect of lithium polysulfides significantly weakens electrochemical performance, preventing its practical application.
Jing Zheng   +9 more
openaire   +2 more sources

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