Nano-Confined Tin Oxide in Carbon Nanotube Electrodes via Electrostatic Spray Deposition for Lithium-Ion Batteries

• Published in: Materials Vol. 15; no. 24; p. 9086
• Main Authors: Henriques, Alexandra, Rabiei Baboukani, Amin, Jafarizadeh, Borzooye, Chowdhury, Azmal Huda, Wang, Chunlei
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 19-12-2022; MDPI
• Subjects: Anodes; Batteries; Carbon; Carbon nanotubes; Controllability; Electric properties; Electric vehicles; Electrical conductivity; Electrode materials; Electrodes; Electrolytes; Energy storage; Graphene; Lithium; Lithium-ion batteries; Metal oxides; Microscopy; Morphology; Nanoparticles; Nanotubes; Portable equipment; Rechargeable batteries; Spray deposition; Tin dioxide; Tin oxides; United States > US; tin oxide; carbon nanotube; electrostatic spray deposition; lithium-ion battery
• ISSN: 1996-1944; 1996-1944
• DOI: 10.3390/ma15249086

The development of novel materials is essential for the next generation of electric vehicles and portable devices. Tin oxide (SnO
), with its relatively high theoretical capacity, has been considered as a promising anode material for applications in energy storage devices. However, the SnO
anode material suffers from poor conductivity and huge volume expansion during charge/discharge cycles. In this study, we evaluated an approach to control the conductivity and volume change of SnO
through a controllable and effective method by confining different percentages of SnO
nanoparticles into carbon nanotubes (CNTs). The binder-free confined SnO
in CNT composite was deposited via an electrostatic spray deposition technique. The morphology of the synthesized and deposited composite was evaluated by scanning electron microscopy and high-resolution transmission electron spectroscopy. The binder-free 20% confined SnO
in CNT anode delivered a high reversible capacity of 770.6 mAh g
. The specific capacity of the anode increased to 1069.7 mAh g
after 200 cycles, owing to the electrochemical milling effect. The delivered specific capacity after 200 cycles shows that developed novel anode material is suitable for lithium-ion batteries (LIBs).