Hollow Co/NC@NC catalysts accelerate reaction kinetics in Li-S batteries

Hualiang Wei; Zexiang Chen; Huifang Lv; Yang Zhao; Mengyao Bao; Ke Yu; Xiaowei Guo; Yan Wang

doi:10.1117/12.2687111

24 October 2023 Hollow Co/NC@NC catalysts accelerate reaction kinetics in Li-S batteries

Hualiang Wei, Zexiang Chen, Huifang Lv, Yang Zhao, Mengyao Bao, Ke Yu, Xiaowei Guo, Yan Wang

Proceedings Volume 12804, Second International Conference on Sustainable Technology and Management (ICSTM 2023); 128040M (2023) https://doi.org/10.1117/12.2687111
Event: 2nd International Conference on Sustainable Technology and Management (ICSTM2023), 2023, Dongguan, China

Abstract

In this research, hollow Co/NC@NC catalysts were successfully prepared and applied to modify the separator in Lithium-Sulfur (Li-S) system. Among this composite, carbon films from dopamine (DA) carbonation can enhance the electrical conductivity of material, and Co species adsorb lithium polysulfide (LiPSs), paving the way for further catalytic conversion of LiPSs to Li2S, which can greatly limit the shuttle effect. Moreover, the hollow structure not only contributes more active sites, but also promotes the diffusion of Li+, which is significant for the improvement of battery performance. By taking advantage of the coating material components and structure, Li-S cells achieve a high initial capacity (1098 mAh/g at 0.2C), impressive rate performance (640 mAh/g at 2C and 420 mAh/g at 4C), and superior cycling stability (826 mAh/g obtained after 100 cycles at 0.5C).

Citation Download Citation

Hualiang Wei, Zexiang Chen, Huifang Lv, Yang Zhao, Mengyao Bao, Ke Yu, Xiaowei Guo, and Yan Wang "Hollow Co/NC@NC catalysts accelerate reaction kinetics in Li-S batteries", Proc. SPIE 12804, Second International Conference on Sustainable Technology and Management (ICSTM 2023), 128040M (24 October 2023); https://doi.org/10.1117/12.2687111

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available