title: Interfacial Adsorption and Redox Coupling of Li4Ti5O12 with Nanographene for High-Rate Lithium Storage.
abstract: Despite the many efforts to solve the problem associated with lithium storage at high rates, it is rarely achieved up until now. The design with experimental proof is reported here for the high rate of lithium storage via a core-shell structure composite comprised of a Li4Ti5O12 (LTO) core and a nanographene (NG) shell. The LTO-NG core-shell was synthesized via a first-principles understanding of the adsorption properties between LTO and NG. Interfacial reactions are considered between the two materials by a redox coupling effect. The large interfacial area between the LTO core and the NG shell resulted in a high electron-conducting path. It allowed rapid kinetics to be achieved for lithium storage and also resulted in a stable contact between LTO and NG, affording cyclic performance stability.
authors.forename: Seongjun
authors.initials: S
authors.lastname: Bae
authors.forename: Inho
authors.initials: I
authors.lastname: Nam
authors.forename: Soomin
authors.initials: S
authors.lastname: Park
authors.forename: Young Geun
authors.initials: YG
authors.lastname: Yoo
authors.forename: Sungju
authors.initials: S
authors.lastname: Yu
authors.forename: Jong Min
authors.initials: JM
authors.lastname: Lee
authors.affiliation: §Department of Chemical Engineering, University of Seoul, Seoul 130-743, Republic of Korea.
authors.forename: Jeong Woo
authors.initials: JW
authors.lastname: Han
authors.forename: Jongheop
authors.initials: J
authors.lastname: Yi
keywords: Li4Ti5O12; core−shell structure; density functional theory calculations; lithium-ion batteries; nanographene