Type

Journal Article

Authors

Valeria Nicolosi
Jonathan N Coleman
Patrick Rozier
Georg S Duesberg
Nina C Berner
Conor S Boland
Niall McEvoy
Zifeng Lin
Andrés Seral-Ascaso
Andrew Harvey
and 3 others

Subjects

Chemistry

Topics
energy storage carbon nanotube electron transport single walled x ray diffraction lithium ion battery battery anodes ion transport

Enabling Flexible Heterostructures for Li-Ion Battery Anodes Based on Nanotube and Liquid-Phase Exfoliated 2D Gallium Chalcogenide Nanosheet Colloidal Solutions. (2017)

Abstract 2D metal chalcogenide (MC) nanosheets (NS) have displayed high capacities as lithium-ion battery (LiB) anodes. Nevertheless, their complicated synthesis routes coupled with low electronic conductivity greatly limit them as promising LiB electrode material. Here, this work reports a facile single-walled carbon nanotube (SWCNT) percolating strategy for efficiently maximizing the electrochemical performances of gallium chalcogenide (GaX, X = S or Se). Multiscaled flexible GaX NS/SWCNT heterostructures with abundant voids for Li(+) diffusion are fabricated by embedding the liquid-exfoliated GaX NS matrix within a SWCNT-percolated network; the latter improves the electron transport and ion diffusion kinetics as well as maintains the mechanical flexibility. Consequently, high capacities (i.e., 838 mAh g(-1) per gallium (II) sulfide (GaS) NS/SWCNT mass and 1107 mAh g(-1) per GaS mass; the latter is close to the theoretical value) and good rate capabilities are achieved, which can be majorly attributed to the alloying processes of disordered Ga formed after the first irreversible GaX conversion reaction, as monitored by in situ X-ray diffraction. The presented approach, colloidal solution processing of SWCNT and liquid-exfoliated MC NS to produce flexible paper-based electrode, could be generalized for wearable energy storage devices with promising performances.
Collections Ireland -> Trinity College Dublin -> PubMed

Full list of authors on original publication

Valeria Nicolosi, Jonathan N Coleman, Patrick Rozier, Georg S Duesberg, Nina C Berner, Conor S Boland, Niall McEvoy, Zifeng Lin, Andrés Seral-Ascaso, Andrew Harvey and 3 others

Experts in our system

1
Valeria Nicolosi
Trinity College Dublin
Total Publications: 67
 
2
Jonathan Coleman
Trinity College Dublin
Total Publications: 217
 
3
Georg Duesberg
Trinity College Dublin
Total Publications: 116
 
4
Nina C Berner
Trinity College Dublin
Total Publications: 20
 
5
Niall Mcevoy
Trinity College Dublin
Total Publications: 54
 
6
Andrés Seral-Ascaso
Trinity College Dublin
Total Publications: 6
 
7
Andrew Harvey
Trinity College Dublin
Total Publications: 17