Use of strontium titanate (SrTiO3) as an anode material for lithium-ion batteries

作者：Johnson Derek C; Prieto Amy L^*

来源：Journal of Power Sources, 2011, 196(18): 7736-7741.

DOI：10.1016/j.jpowsour.2011.03.052

• Strontium titanate
• Photoinduced reduction
• Anode nanoparticles
• Lithium-ion battery

Strontium titanate nanoparticles have been synthesized using a combination of sol-precipitation and hydrothermal techniques for subsequent testing as an anode material for lithium-ion batteries. The potentials associated with lithiation are 0.105 V and 0.070 V vs. Li/Li+ and 0.095 V and 0.142 V vs. Li/Li+ during de-lithiation. These potentials are significantly lower than the 1.0V to 1.5 V vs. Li/Li+ typically reported in the literature for titanates. In an attempt to improve the lithiation and de-lithiation kinetics, as well as capacity retention. SrTiO3 nanoparticles were platinized using a photoinduced reduction of chloroplatinic acid. No significant changes in the morphology or crystal structure of the platinized nanoparticles were observed as a result of the reduction reaction. The voltage profile, charge and discharge kinetics, and cyclability of the platinized SrTiO3 nanoparticles are compared to that of the non-platinized SrTiO3 nanoparticles.

• 出版日期2011-9-15