Direct Synthesis of Carbon-Doped TiO2-Bronze Nanowires as Anode Materials for High Performance Lithium-Ion Batteries.
Carbon-doped TiO2-bronze nanowires were synthesized via a facile doping mechanism and were exploited as active material for Li-ion batteries. We demonstrate that both the wire geometry and the presence of carbon doping contribute to the high electrochemical performance of these materials. Direct carbon doping for example reduces the Li-ion diffusion length and improves the electrical conductivity of the wires, as demonstrated by cycling experiments, which evidenced remarkably higher capacities and superior rate capability over the undoped nanowires. The as-prepared carbon-doped nanowires, evaluated in lithium half-cells, exhibited lithium storage capacity of ∼306 mA h g(-1) (91% of the theoretical capacity) at the current rate of 0.1C as well as excellent discharge capacity of ∼160 mAh g(-1) even at the current rate of 10 C after 1000 charge/discharge cycles.
Department of Nanostructures, Istituto Italiano di Tecnologia , Via Morego-30, Genova-16163, Italy.|Department of Physics, University of Genoa , Via Dodecaneso-33, Genova-16146, Italy.
Subrahmanyam
S
Goriparti
Department of Nanostructures, Istituto Italiano di Tecnologia , Via Morego-30, Genova-16163, Italy.
Ermanno
E
Miele
Department of Nanochemistry, Istituto Italiano di Tecnologia , Via Morego-30, Genova-16163, Italy.
Mirko
M
Prato
Department of Nanochemistry, Istituto Italiano di Tecnologia , Via Morego-30, Genova-16163, Italy.
Alice
A
Scarpellini
Department of Nanochemistry, Istituto Italiano di Tecnologia , Via Morego-30, Genova-16163, Italy.
Sergio
S
Marras
Department of Nanochemistry, Istituto Italiano di Tecnologia , Via Morego-30, Genova-16163, Italy.
Simone
S
Monaco
Department of Nanostructures, Istituto Italiano di Tecnologia , Via Morego-30, Genova-16163, Italy.
Andrea
A
Toma
Department of Nanostructures, Istituto Italiano di Tecnologia , Via Morego-30, Genova-16163, Italy.
Gabriele C
GC
Messina
Department of Nanostructures, Istituto Italiano di Tecnologia , Via Morego-30, Genova-16163, Italy.
Alessandro
A
Alabastri
Department of Nanostructures, Istituto Italiano di Tecnologia , Via Morego-30, Genova-16163, Italy.
Francesco
F
De Angelis
Department of Nanochemistry, Istituto Italiano di Tecnologia , Via Morego-30, Genova-16163, Italy.
Liberato
L
Manna
Department of Nanostructures, Istituto Italiano di Tecnologia , Via Morego-30, Genova-16163, Italy.
Claudio
C
Capiglia
Department of Nanostructures, Istituto Italiano di Tecnologia , Via Morego-30, Genova-16163, Italy.
Remo Proietti
RP
Zaccaria
C-doped TiO2−bronze nanowires; TiO2−bronze nanowires; anode; carbon doping; lithium ion battery