Abstract
Abstract Owing to increased human reliance on electronic products, the fast charging and high-rate discharge of such products are becoming increasingly important. In this work, Li4Ti5O12 (LTO) and polyethylene glycol (PEG)-LTO battery materials were successfully synthesized using the sol–gel method. P2-LTO was found to exhibit excellent electrochemical rate performance. XRD results showed that the crystallinity of PEG-LTO is higher than that of LTO, and that the spinel structure of LTO is retained in PEG-LTO. SEM results showed that P2-LTO had a more uniform and finer morphology than did LTO. The charge and discharge data revealed that PEG-LTO has excellent high-rate performance. The capacity of P2-LTO at 0.2, 0.5, 1, 2, 5, and 10 C was noticeably higher than that of pure LTO and the theoretical specific capacity of LTO. P2-LTO showed good resilience. EIS results showed that the electrochemical impedance of P2-LTO was smaller than that of LTO. The results show that this method is a simple and effective method for preparing high-rate performance LTO anode materials.
Published Version
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