Characteristics of Polymer Composite Electrolyte for MEMS Power System

Abstract:

In the polymer electrolyte, lots of salt have been studied and synthesized in many laboratories. In the previous our work[1,2], we found that the SiO2 (-7 nm, Degussa-Huls), which had the OH- and (CH3)3 surface groups, could help to enhance the ionic conductivity and the interfacial stability. We used as a plasticizer. It has the four CN groups at the end of chains. It was helpful to enhance the ionic conductivity, as respected. The ionic conductivity of the composite electrolytes was about 5.0ⅹ10-5 S/cm at room temperature. In addition, we conducted the charge/discharge test with LiMn2O4 at room temperature and 45 °C. The retention of 1st cycle to 100th cycle was 74 % at 45°C.

• Periodical: Materials Science Forum (Volumes 486-487)
• Pages: 566-569
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.486-487.566
• Online since: June 2005
• Authors: Jung Nam Kim, Jong Wan Park
• Keywords: All Solid Polymer Electrolytes, Micro Battery

References

[1] Jong-Wook Kim, Kwang-Sun Ji, Jae-Pil Lee and Jong-Wan Park: J. of Power Sources Vol. 119-121(2003), pp.415-421.

[2] Kwang-Sun Ji, Hee-Soo Moon, Jong-Wook Kim and Jong-Wan Park: J. of Power Sources, Vol. 117(2003), pp.124-130.

[3] Flex B. Dias, Lambertus Plomp, Jakobert B.J. Veldhuis: J. Of Powere Soureces, Vol. 88(2000), pp.169-191.

[4] Young Sik Lee, Gi Sang Song, Yongku Kang and Dong Hack Suh: Electrochimica Acta, In press Fig. 4 Discharge capacity and efficiency at 45℃ (a) Li/SPE/LiMn2O4 and (b) Li/EC: DMC/LiMn2O4.

20 40 60 80 100.

[30] [40] [50] [60] [70] [80] [90] 100 110 (b) Coulomb Efficiency (%) cycle number (a) SPE - at 45o C (b) EC: DEC - at 45 o C (a).

20 40 60 80 100.

[10] [20] [30] [40] [50] [60] [70] [80] (b) Discharge capaicy (µΑµΑµΑµΑ/cm.

[2] µµµµm) cycle number (a).