Robust yarn electrodes for microbatteries with high areal capacity
- Robust yarn electrodes for microbatteries with high areal capacity
- 강태형; 박사랑; 이병선; 최인석; 유웅열
- LiFePo4 cathode; Nanocomposite yarn; Microbattery; Areal capacity
- Issue Date
- Materials & design
- VOL 166, NO 15-107620-8
- This work reports the design strategy of mechanically robust yarn electrodes having high areal capacity (ca. 14  mAh/cm2) as building blocks for microbatteries. Lithium iron phosphate (LiFePO4) was embedded into poly(acrylonitrile) nanofibers (NFs) via electrospinning. The obtained NFs were assembled into yarns via a yarning process, and were then thermally treated to produce carbon NF yarns. A hot-stretching process was used between the yarning and thermal treatment processes, improving the mechanical (tensile modulus of 1.03  GPa and strength of 38  MPa) and electrical (43.1  S/cm) properties of the yarn electrodes. The free-standing yarn electrodes with different mass loadings showed stable cycling performances with reasonable reversible capacity (ca. 112  mAh/g) up to 30  cycles. These mechanically robust and electrochemically excellent yarn electrodes could serve as building blocks for various structures in advanced microbatteries requiring high areal density.
- Appears in Collections:
- KIST Publication > Article
- Files in This Item:
There are no files associated with this item.
- RIS (EndNote)
- XLS (Excel)
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.