Fiber Optic Monitoring of Composite Lithium Iron Phosphate Cathodes in Pouch Cell Batteries

↓ Direkt till sidans innehåll
↓ Direkt till sidans sekundära innehåll (sidomenyn)

Sökning: WFRF:(Björefors Fredrik 1971 ) > Fiber Optic Monitor...

Hedman, JonasUppsala universitet,Strukturkemi (författare)

Fiber Optic Monitoring of Composite Lithium Iron Phosphate Cathodes in Pouch Cell Batteries

Artikel/kapitelEngelska2022

Förlag, utgivningsår, omfång ...

2021-12-27
American Chemical Society (ACS),2022
electronicrdacarrier

Nummerbeteckningar

LIBRIS-ID:oai:DiVA.org:uu-469306
https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-469306URI
https://doi.org/10.1021/acsaem.1c03304DOI

Kompletterande språkuppgifter

Språk:engelska
Sammanfattning på:engelska

Ingår i deldatabas

SwePubSwePub

Klassifikation

Ämneskategori:ref swepub-contenttype
Ämneskategori:art swepub-publicationtype

Anmärkningar

- Developing techniques for real-time monitoring of the complex and dynamic environment in lithium-ion batteries is crucial for optimal use of the cells and to develop the next generation of batteries. In this work, we demonstrate the use of fiber optic evanescent wave (FOEW) sensors for monitoring lithium iron phosphate (LFP) composite cathodes in pouch cells. The fiber optic sensors were placed on top of the LFP electrodes, and the pouch cells were found to cycle well with significantly improved electrochemical performance compared to fully embedded fibers in Swagelok cells. Galvanostatic, voltammetric, and pulsed current techniques demonstrated that the optical response correlated well with the capacity, and a clear difference in sensor response was seen when the sensors were placed at the surface of composite electrodes compared to fibers embedded in the cathode. The optical response from LFP at different rates was also investigated, but no apparent influence on intensity output was found even though polarization was observed in the voltage profiles at higher currents. It was also demonstrated that the electrolyte itself functioned as a fiber cladding and that the salt concentration in the electrolyte did not influence the optical signal. In addition, given the short penetration depth of the evanescent waves, the sensor response is most likely dominated by the surface conditions of electrode particles near the sensing region. These findings provide further insight into the application and performance of FOEW sensors integrated into batteries, as well as the possibility of developing low-cost fiber optic sensors for battery monitoring under working conditions.

Ämnesord och genrebeteckningar

NATURVETENSKAP Kemi Materialkemi hsv//swe
NATURAL SCIENCES Chemical Sciences Materials Chemistry hsv//eng
cyclic voltammetry
evanescent waves
fiber optic sensors
GITT
LiBOB
LiMn2O4
lithium iron phosphate
lithium-ion batteries

Biuppslag (personer, institutioner, konferenser, titlar ...)

Björefors, Fredrik,1971-Uppsala universitet,Strukturkemi(Swepub:uu)fbj01617 (författare)
Uppsala universitetStrukturkemi (creator_code:org_t)

Sammanhörande titlar

Ingår i:ACS Applied Energy Materials: American Chemical Society (ACS)5:1, s. 870-8812574-0962

Internetlänk

Hitta via bibliotek

ACS Applied Energy Materials (Sök värdpublikationen i LIBRIS)

Till lärosätets databas

Hitta mer i SwePub

Av författaren/redakt...: Hedman, Jonas; Björefors, Fredr ...

Om ämnet

NATURVETENSKAP: NATURVETENSKAP; och Kemi; och Materialkemi

Artiklar i publikationen: ACS Applied Ener ...

Av lärosätet: Uppsala universitet

Sök utanför SwePub

Sök vidare i:: Google; Google Book Search; Google Scholar

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

LIBRIS.kb.se