Data · dataset · 2026
Butylene Carbonate as a Cosolvent to Suppress Aluminum Corrosion in LiFSI Electrolytes for Long-Life Lithium-Ion Batteries
Listed in Teesside University Research Data Repository
Lithium hexafluorophosphate (LiPF6) is currently the dominant lithium salt electrolyte in lithium-ion batteries (LIBs), while lithium bis(fluorosulfonyl)imide (LiFSI) is a promising alternative due to its superior stability and higher capacity retention.
Description
However, under high-voltage operating conditions, aluminum current collectors exhibit an inherent tendency toward electrochemical dissolution. This study introduces using 1,2-butylene carbonate (BC) to partially replace ethylene carbonate (EC) in the electrolyte to inhibit Al corrosion.
The results reveal that the introduction of BC reduces the activity of FSI- through strong coordination with FSI-, and it weakens the interaction between EC and Li+ by forming strong hydrogen bond analogue with EC. This promotes the pairing of FSI- with Li+ to form an anion-cation aggregate (AGG), further reducing the activity of free FSI- with corrosion potential and an AlF3/LiF passivation layer can be formed on the aluminum collector surface.
Read the rest (1 more)
Furthermore, the LiFSI+BC system can form a thin and uniform cathode electrolyte interface (CEI) film over LiFePO4 (LFP). The LFP||Li battery assembled based on this electrolyte achieved a capacity retention rate of 99.58% after 500 stable cycles at a cut-off voltage of 3.8 V and a rate of 0.5C. This work provides an effective strategy toward developing of lithium-ion batteries with long cycle life.
Links
Where it is published
- DOI doi.org/10.17632/ssy62w7cdg.1 ↗
DOI / persistent id · from researchdata tees ac uk
Catalogue records · 1
- OAI-PMH record data.mendeley.com/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai%3Adata… ↗
metadata API · from researchdata tees ac uk
Topics
- From keywords
- Earth & Environmental Science
Provenance · 1 source records, 6 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| Teesside University Research Data Repository | oai:data.mendeley.com/ssy62w7cdg.1 | 14 h ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · researchdata tees ac uk | connector:researchdata_tees_ac_uk@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · researchdata tees ac uk | connector:researchdata_tees_ac_uk@1.0.0 | |
| description | source · researchdata tees ac uk | connector:researchdata_tees_ac_uk@1.0.0 | /metadata/dc/description |
| license | source · researchdata tees ac uk | connector:researchdata_tees_ac_uk@1.0.0 | /metadata/dc/rights |
| publication_date | source · researchdata tees ac uk | connector:researchdata_tees_ac_uk@1.0.0 | |
| title | source · researchdata tees ac uk | connector:researchdata_tees_ac_uk@1.0.0 | /metadata/dc/title |