Enhanced High-Rate Capability of Iodide-Doped Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub> as an Anode for Lithium-Ion Batteries
Lukman Noerochim,
Rachmad Sulaksono Prabowo,
Widyastuti Widyastuti,
Diah Susanti,
Achmad Subhan,
Nurul Hayati Idris
Affiliations
Lukman Noerochim
Department of Materials and Metallurgical Engineering, Sepuluh Nopember Institute of Technology, Surabaya 60111, Indonesia
Rachmad Sulaksono Prabowo
Department of Mechanical Engineering, University of Balikpapan, Pupuk Raya Rd, Gunung Bahagia, Balikpapan 76114, Indonesia
Widyastuti Widyastuti
Department of Materials and Metallurgical Engineering, Sepuluh Nopember Institute of Technology, Surabaya 60111, Indonesia
Diah Susanti
Department of Materials and Metallurgical Engineering, Sepuluh Nopember Institute of Technology, Surabaya 60111, Indonesia
Achmad Subhan
Research Center of Physics, Indonesian Institute of Science, Serpong 15314, Indonesia
Nurul Hayati Idris
Energy Storage Research Group, Faculty of Ocean Engineering Technology and Informatics, Universiti Malaysia Terengganu, Kuala Nerus 21030, Terengganu, Malaysia
Li4Ti5O12 (LTO) is an alternative anode material to substitute commercial graphite for lithium-ion batteries due to its superior long cycle life, small volume change (zero strain), good thermal stability, and relatively high power. In this work, iodide-doped LTO is prepared by solid-state reaction method via ball milling method and subsequently calcined at 750 °C for 10 h in air atmosphere. X-ray diffraction (XRD) of iodide-doped LTO reveals the spinel cubic structure without any impurities detected. The 0.2 mol lithium iodide-doped LTO shows enhanced high-rate capability with a specific discharge capacity of 123.31 mAh g−1 at 15 C. The long cyclic performance of 0.2 mol lithium iodide-doped LTO delivers a specific discharge capacity of 171.19 mAh g−1 at 1 C with a capacity retention of 99.15% after 100 cycles. It shows that the iodide-doped LTO is a promising strategy for preparing a high electrochemical performance of LTO for the anode of lithium-ion batteries.
