In:
ECS Meeting Abstracts, The Electrochemical Society, Vol. MA2021-01, No. 6 ( 2021-05-30), p. 349-349
Abstract:
A free-standing carbon cathode is attractive in that it can increase the proportion of active material without any current collector, conductive material, and binder. This study introduces a free-standing carbon cathode derived from CO 2 with very high porosity for lithium-sulfur battery. The free-standing carbon cathode, while having its very porous structure, shows very excellent elasticity, providing potential as a standalone electrode material in industry. In addition, in the process of making free-standing carbon through electrospinning of polyacrylonitrile (PAN) and NaBH 4 , the very rich N atoms, 19.38wt% of pyridinic N and 16.24% of pyrrolic-N, exist on the surface, which greatly improves the lithium sulfide adsorption ability and electrical conductivity. As a result, a capacity of 700 mAh g −1 is exhibited for 500 cycles at 0.2 C and 650 mAh g −1 is secured at 5C. Even with a very high active material loading amount of 6.11 mg cm −2 , it maintained an areal capacity of 3.1 mAh cm −2 for 500 cycles at 0.2 C with the original free-standing form maintained.
Type of Medium:
Online Resource
ISSN:
2151-2043
DOI:
10.1149/MA2021-016349mtgabs
Language:
Unknown
Publisher:
The Electrochemical Society
Publication Date:
2021
detail.hit.zdb_id:
2438749-6
Permalink