Journal
MATERIALS RESEARCH BULLETIN
Volume 140, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2021.111310
Keywords
Cheese-like carbon; Egg white; Sulfur; Lithium-sulfur batteries
Categories
Funding
- National Research Foundation of Korea (NRF) by the Ministry of Science, ICT & Future Planning (MSIP) [NRF-2019R1A2C1086610]
- National Research Foundation of Korea (NRF) - Ministry of Education [NRF-2020R1A6A1A03038697]
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By preparing a cheese-like carbon material from egg white and adding sulfur to prepare CLC/S composite, the performance of lithium-sulfur batteries can be improved, showing potential for future applications.
Lithium-sulfur (Li-S) batteries are attractive and prominent power sources due to high theoretical capacity and the availability of sulfur at a low price. However, sulfur has limitations such as the formation of polysulfides and low conductivity. To overcome these problems, we prepared a cheese-like carbon (CLC) using a simple annealing process from an egg white. The as-prepared carbon material contains NaCl and KCl compounds. The CLC with nanoholes were formed after cleaning with distilled water and ethanol several times. The prepared CLC had a strong polysulfide capturing ability, high conductivity, a large surface area, and high catalytic activity. To prepare the CLC/S composite, sulfur was added by the melt diffusion method. CLC/S cathode material exhibited a high initial capacity of nearly 1420 mA h g(-1) at 0.1 C and excellent rate capability with a low capacity-fading rate. The present work revealed that CLC/S cathodes are potential candidate cathodes for Li-S batteries.
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