成果简介：Hierarchically porous TiO2 based composites (pure TiO2 and TiO2/Carbon (TiO2/C) composite) were synthesized by a facile sol-gel process followed by post-calcination. Poly(vinylpyrrolidone) (PVP) acts as a phase separation inducer as well as a carbon source. The as-prepared TiO2 based composites possess an interesting hierarchically porous structure constructed by cocontinuous macropores and mesoporous skeletons consisting of interconnected nanocrystals and in situ distributed carbon. The hierarchically porous TiO2/C composite shows excellent electrochemical performances with fast lithium ion diffusion and electronic transport, resulting from hierarchically porous structure and conductive carbon material. The TiO2/C composite calcined at 500 °C exhibits the highest BET surface area of 170 m2 g−1, superior cycling stability (delivers a remarkable discharge capacity of 132 mAh g−1 at[]1 C after 100 cycles) and excellent rate capability (over 96 mAh g−1 at 30 C rate). The results indicate that these hierarchically porous TiO2 based composites could be promising anode materials for high performance lithium ion batteries.

论文引用方式：Wenjun Zhu, Hui Yang, Kazuki Nakanishi, Kazuyoshi Kanamori and Xingzhong Guo. Sol-gel synthesis of nanocrystal-constructed hierarchically porous TiO2 based composites for lithium ion batteries. RSC Advances. 2015, 5, 24803-24813

论文链接：http://pubs.rsc.org/en/content/articlehtml/2015/ra/c5ra03491d。