Suzanowicz AM, Turner B, Abeywickrama TM, Lin H, Alramahi D, Segre CU, Mandal BK. New Scalable Sulfur Cathode Containing Specifically Designed Polysulfide Adsorbing Materials.
MATERIALS (BASEL, SWITZERLAND) 2024;
17:856. [PMID:
38399107 PMCID:
PMC10890257 DOI:
10.3390/ma17040856]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2023] [Revised: 01/21/2024] [Accepted: 02/02/2024] [Indexed: 02/25/2024]
Abstract
Because of its considerable theoretical specific capacity and energy density, lithium-sulfur battery technology holds great potential to replace lithium-ion battery technology. However, a versatile, low-cost, and easily scalable bulk synthesis method is essential for translating bench-level development to large-scale production. This paper reports the design and synthesis of a new scalable sulfur cathode, S@CNT/PANI/PPyNT/TiO2 (BTX). The rationally chosen cathode components suppress the migration of polysulfide intermediates via chemical interactions, enhance redox kinetics, and provide electrical conductivity to sulfur, rendering outstanding long-term cycling performance and strong initial specific capacity in terms of electrochemical performance. This cathode's cell demonstrated an initial specific capacity of 740 mA h g-1 at 0.2 C (with a capacity decay rate of 0.08% per cycle after 450 cycles).
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