onr:"swepub:oai:DiVA.org:uu-316422"
Search: onr:"swepub:oai:DiVA.org:uu-316422" > Novel insights into...
- 1 of 1
- Previous record
- Next record
- To hitlist
Novel insights into higher capacity from the Li-ion battery cathode material Li2FeSiO4
-
- Liivat, Anti (author)
- Uppsala universitet,Strukturkemi
-
- Thomas, Josh (author)
- Uppsala universitet,Strukturkemi
-
- Guo, Jianghuai (author)
- Xiamen Univ, Dept Chem, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China.
- show more...
- show less...
- (creator_code:org_t)
- Elsevier BV, 2017
- 2017
- English.
- In: Electrochimica Acta. - : Elsevier BV. - 0013-4686 .- 1873-3859. ; 223, s. 109-114
- Journal article (peer-reviewed)
Abstract
Subject headings
Close
- A highly reactive composite cathode material incorporating nano-particles of the popular Li-ion battery cathode material Li2FeSiO4 (LFS) is here studied to probe the activation of the controversial Fe3+/Fe4+ redox couple in exploiting the second Li-ion in the formula unit - for use in rechargeable Li-ion batteries. A novel form of in situ Mossbauer spectroscopy is used to monitor the oxidation state of the Fe-ions in symmetric LFS LFS cells. This is based on mapping the poorly resolvable Mossbauer spectra from the expected Fe3+/Fe4+ redox couple in the working electrode onto the highly resolvable Fe2+/Fe3+ spectra from the counter electrode. Comparison of such data from half-delithiated Li(1)Fe3+SiO4 parallel to Li(1)Fe3+SiO4 and almost lithium-free "Li(0)Fe4+SiO4 parallel to Li(0)Fe4+SiO4" symmetric cells is demonstrated - to distinguish the electrode reactions from the those involving the electrolyte. Lithium is shown to cycle reversibly in the symmetric cells. However, a large proportion of the cycled lithium (similar to 70%) does not derive from the bulk of the electrodes, but is rather a result of high-V electrolyte degradation, where charge balance is maintained by leaching lithium from the electrolyte and inserting it into the electrodes.
Subject headings
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Keyword
- Lithium-ion batteries
- positive electrode
- Li2FeSiO4
- in situ Mossbauer spectroscopy
- Fe4
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
- Electrochimica Acta (Search for host publication in LIBRIS)
To the university's database
- 1 of 1
- Previous record
- Next record
- To hitlist
Find more in SwePub
- By the author/editor
- Liivat, Anti
- Thomas, Josh
- Guo, Jianghuai
- Yang, Yong
- About the subject
-
- NATURAL SCIENCES
- NATURAL SCIENCES
- and Chemical Science ...
- Articles in the publication
- Electrochimica A ...
- By the university
- Uppsala University
Search outside SwePub
- Extend your search to:
- 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.
- Copyright © LIBRIS - National Library Systems
- LIBRIS.kb.se
