English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

Lithium ion battery (LIB) has been used as energy storage devices for portable electronics since 1990 years. Recently, these are well noted as the power sources for the vehicles such as electric vehicles and hybrid electric vehicles. Both layered type LiCoO2, LiNiO2 and spinel type LiMn2O4 is the most important cathode materials because of their high operating voltage at 4 V (Mizushima, et.al, 1980, Guyomard, et.al, 1994). So far, LiCoO2 has been mostly used as cathode material of commercial LIB. However, LiCoO2 and LiNiO2 have a problem related to capacity fading due to the instability in rechargeable process. Cobalt is also expensive and its resource is not sufficient. Therefore, LiCoO2 cathode material is not suitable as a LIB for EV and HEV. On the other hand, LiMn2O4 is regarded as a promising cathode material for large type LIB due to their advantages such as low cost, non-toxicity and thermally stability (Pegeng, et.al, 2006). It was also known that Ni-substitute type LiMn2O4 (LiNi0.5Mn1.5O4) was exhibited rechargeable behavior at about 5 V (Markovsky, et.al, 2004, Idemoto, et.al, 2004, Park, et.al, 2004). LiNi0.5Mn1.5O4 has been considerably noticed as a cathode material with high power density which had an active potential at 5 V. The layered type LiCo1/3Ni1/3Mn1/3O2 was found to exhibit superior high potential cathode properties. This had rechargeable capacity with more than 150 mAh/g at higher rate and a milder thermal stability, but shows significantly capacity fading during the long rechargeable process. Recently, olivine type phosphate compound is noted as an alternative cathode material. LiFePO4 and LiMnPO4 were expected as next generation materials for large LIB because of low-cost, environmentally friendly, high thermally stability and electrochemical performance. On the other hand, the oxide type anode such as spinel type Li4Ti5O12 is expected as the candidate for the replacement of carbon anodes because of better safety. LIB which is consisted of LiFePO4 cathode and Li4Ti5O12 anode offers to high safety and long life cycle. Therefore, it is expected as the application of HEV or power supply for load levelling in wind power generation and solar power generation. So far, we have been developed spray pyrolysis technique as a aerosol process to prepare LiFePO4 and Li4Ti5O12 powders for LIB. In this chapter, the powder processing and electrochemical properties of LiFePO4 cathode and Li4Ti5O12 anode materials by spray pyrolysis were described.

Preparation and Electrochemical Properties of Cathode and Anode Materials for Lithium Ion Battery by Aerosol Process