Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7990384 | Journal of Alloys and Compounds | 2018 | 10 Pages |
Abstract
Highly flexible, binder-free, scalable, and high-capacity lithium ion battery anodes were fabricated by ball-milling SnO2 and ZnO2 particles to form Zn2SnO4/SnO2 ternary oxide particles that were supersonically sprayed over a large area of a flexible copper foil without using any binders. The addition of rGO promoted uniform distribution of the particles and enhanced the overall performance of the composite anodes, which showed excellent long-term stability and a reversible capacity of 1316â¯mAh·gâ1 at a specific current of 100â¯mAâ¯gâ1 after 100 cycles. The supersonic deposition promoted inter-particle cohesion as well as adhesion of the coating materials onto the flexible substrate. Without added binder, the potential adverse effects of using binders on the electrical properties of the anodes were eliminated. The morphology and composition of the samples were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, Raman spectroscopy, and X-ray photoelectron spectroscopy. The low-cost and scalable synthesis and deposition methods used here may offer a pathway for achieving commercially viable high-capacity anodes for various flexible electronic devices.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Tae-Gun Kim, Edmund Samuel, Bhavana Joshi, Chan-Woo Park, Min-Woo Kim, Mark T. Swihart, Woo Young Yoon, Sam S. Yoon,