Ultrafast Nanocrystalline-TiO2(B)/Carbon Nanotube Hyperdispersion Prepared via Combined Ultracentrifugation and Hydrothermal Treatments for Hybrid Supercapacitors

Katsuhiko Naoi (1, 2) , Takayuki Kurita (1) , Masayuki Abe (1) , Takumi Furuhashi (1) , Yuta Abe (1) , Keita Okazaki (1) , Junichi Miyamoto (1) , Etsuro Iwama (1) , Shintaro Aoyagi (1) , Wako Naoi (2) , Patrice Simon (1, 3, 4)

1 TUAT - Tokyo University of Agriculture and Technology
2 K & W Inc. (JAPAN)
3 CIRIMAT - Centre interuniversitaire de recherche et d'ingenierie des matériaux
4 RS2E - Réseau sur le stockage électrochimique de l'énergie

Anisotropically grown (b-axis short) single-nano TiO2 (B), uniformly hyper-dispersed on the surface of multiwalled carbon nanotubes (MWCNT), was successfully synthesized via an in situ ultracentrifugation (UC) process coupled with a follow-up hydrothermal treatment. The uc-TiO2 (B)/MWCNT composite materials enable ultrafast Li(+) intercalation especially along the b-axis, resulting in a capacity of 235 mA h g(-1) per TiO2 (B) even at 300C (1C = 335 mA g(-1) ).

Mots clés: Nanosized TiO2(B); High rate performance; Li-ion batteries

Domaines: Matériaux

Katsuhiko Naoi, Takayuki Kurita, Masayuki Abe, Takumi Furuhashi, Yuta Abe, et al.. Ultrafast Nanocrystalline-TiO2(B)/Carbon Nanotube Hyperdispersion Prepared via Combined Ultracentrifugation and Hydrothermal Treatments for Hybrid Supercapacitors. Advanced Materials, 2016, vol. 28 (n° 31), pp. 6751-6757. ⟨10.1002/adma.201600798⟩. ⟨hal-01496544⟩