Peng J, Zeng X, Zhu H, Xia K, Gong J. K-doped Li
2ZnTi
3O
8/C as an efficient anode material with high performance for Li-ion batteries.
RSC Adv 2022;
12:4924-4930. [PMID:
35425476 PMCID:
PMC8981219 DOI:
10.1039/d1ra07835f]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Accepted: 01/04/2022] [Indexed: 11/21/2022] Open
Abstract
Li2ZnTi3O8/C and Li1.9K0.1ZnTi3O8/C were successfully synthesized using the sol–gel method. Doping K apparently yielded a wider tunnel, helpful for increasing the rate of transport of lithium ions, and furthermore yielded excellent electrochemical properties. The first discharge capacity for Li1.9K0.1ZnTi3O8/C was 352.9 mA h g−1 at a current density of 200 mA g−1. Li1.9K0.1ZnTi3O8/C also performed stably, retaining a capacity of 323.7 mA h g−1 at the 100th cycle, indicative of its excellent cycling properties. In the rate performance test, Li1.9K0.1ZnTi3O8/C showed at the first cycle a high discharge capacity of 379.5 mA h g−1 for a current density of 50 mA g−1 and a capacity of 258.9 mA h g−1 at 1000 mA g−1. The results indicated that K-doping should be considered a useful method for improving electrochemical performances.
(A and B) CV curves of (A) Li2ZnTi3O8/C and (B) Li1.9K0.1ZnTi3O8/C, (C) Initial charge–discharge curves and (D) cycling capacity and (E) rate performances of Li2ZnTi3O8/C and Li1.9K0.1ZnTi3O8/C. (F) The composition of the CR2032 cell.![]()
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