Suppressing of Irreversible Capacity in Lithium-ion Batteries

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F14%3APU105354" target="_blank" >RIV/00216305:26220/14:PU105354 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.4152/pea.201306297" target="_blank" >http://dx.doi.org/10.4152/pea.201306297</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4152/pea.201306297" target="_blank" >10.4152/pea.201306297</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Suppressing of Irreversible Capacity in Lithium-ion Batteries

Popis výsledku v původním jazyce

In this research are considered methods, which can lead to enhance capacity of Lithium-ion batteries. The majority of Li-ion batteries which are used in this time has negative electrode make from graphite. On interface between electrolyte and graphite electrode originates the SEI layer (Solid-Electrolyte Interphase), this layer is the cause of irreversible capacity of graphite. This layer is indispensable for appropriate battery function but for creating this layer is consumed almost one-third potential capacity of Li-ion cell. Is already good known that an irreversible capacity of graphite reduces total potential capacity of battery approximately from 15 % to 45 %. Our goal is to reduce capacity losses and thus increase overall capacity o lithium-ion battery. Was designed a concept in which n-butyllithium (C4H9Li) reagent behaves as the source of lithium atoms and graphite acts like acceptor of lithium atoms. Our conception presents n-butyllithium like reduction reagent which is able to reduce graphite material by Li atoms. Lithium atoms are intercalated between graphite sheets (as at charging process), resulting of this process is new lithiated electrode material which can be used for prepare of negative electrode for Li-ion cells.

Název v anglickém jazyce

Suppressing of Irreversible Capacity in Lithium-ion Batteries

Popis výsledku anglicky

In this research are considered methods, which can lead to enhance capacity of Lithium-ion batteries. The majority of Li-ion batteries which are used in this time has negative electrode make from graphite. On interface between electrolyte and graphite electrode originates the SEI layer (Solid-Electrolyte Interphase), this layer is the cause of irreversible capacity of graphite. This layer is indispensable for appropriate battery function but for creating this layer is consumed almost one-third potential capacity of Li-ion cell. Is already good known that an irreversible capacity of graphite reduces total potential capacity of battery approximately from 15 % to 45 %. Our goal is to reduce capacity losses and thus increase overall capacity o lithium-ion battery. Was designed a concept in which n-butyllithium (C4H9Li) reagent behaves as the source of lithium atoms and graphite acts like acceptor of lithium atoms. Our conception presents n-butyllithium like reduction reagent which is able to reduce graphite material by Li atoms. Lithium atoms are intercalated between graphite sheets (as at charging process), resulting of this process is new lithiated electrode material which can be used for prepare of negative electrode for Li-ion cells.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Portugaliae Electrochimica Acta

ISSN

0872-1904

e-ISSN

1647-1571

Svazek periodika

31

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

PT - Portugalská republika

Počet stran výsledku

10

Strana od-do

297-306

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-84896851832