Abstract
Water-soluble acrylate (AcrylS020) was tested as a potential binder for graphite negative electrodes in lithium-ion batteries, and the results were compared to the commonly used carboxymethyl cellulose (CMC) and styrene-butadiene rubber (SBR) CMC+SBR binder combination. Similar performance was observed at low C-rates and room temperature with both binders in Li/graphite half-cells. However, at high C-rates and/or low temperature, better results were obtained with AcrylS020 and the difference at room temperature and 1C was 166mAhg(-1) vs. 92mAhg(-1) (AcrylS020 vs. CMC+SBR). The stability of the electrodes was similar in graphite/NMC (LiNi1/3Mn1/3Co1/3O2) full-cell tests. The structures of the electrodes using different binders were slightly different as evidenced by SEM images. These results indicate that the AcrylS020 binder is also applicable for graphite negative electrodes and can tolerate the volume change of graphite during charging/discharging.
| Original language | English |
|---|---|
| Pages (from-to) | 470-472 |
| Number of pages | 3 |
| Journal | Energy Technology |
| Volume | 4 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Apr 2016 |
| MoE publication type | A1 Journal article-refereed |
Funding
Tekes is thanked for financial support (project 2948/31/2011). This work made use of the Aalto University Microscopy Center (Aalto-NMC) devices.
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
Keywords
- acrylate binder
- aqueous processing
- graphite
- lithium-ion batteries
- polyvinylidene fluoride
- LI4TI5O12 ELECTRODES
- THERMAL-STABILITY
- ANODES
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OtaNano - Nanomicroscopy Center
Seitsonen, J. (Manager) & Rissanen, A. (Other)
OtaNanoFacility/equipment: Facility
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Raw Materials Research Infrastructure
Karppinen, M. (Manager)
School of Chemical EngineeringFacility/equipment: Facility
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