Akademik Veri Yönetim Sistemi
4 International Conference on Energy, Environment and Storage of Energy (ICEESEN 2024), Nevşehir, Türkiye, 05 Eylül 2024, ss.478-480, (Tam Metin Bildiri)
Li2ZnTi3O8 (LZTO) modified with multiwalled carbon nanotubes (MWCNTs) offers promising potential as a Li-ion battery anode due to improved conductivity and higher lithium storage. Using a ball-mill-aided solid- state method, LZTO@MWCNTs is synthesized, and its electrochemical performance is tested through cyclic voltammetry (CV), galvanostatic charge-discharge, and electrochemical impedance spectroscopy (EIS). CV results show that the LZTO@MWCNT electrode has a smaller anodic-cathodic peak potential difference (0.184 V) compared to LZTO (0.211 V), indicating better electrochemical reversibility after five cycles. LZTO@MWCNTs also outperforms LZTO in charge-discharge capacity at 0.1–5 C rates. After 100 cycles, the LZTO@MWCNT electrode retains initial discharge capacities of 227 and 142 mAh g⁻¹ at 1C and 5C, respectively, while LZTO achieves only 144 and 28 mAh g⁻¹. EIS analysis shows LZTO’s charge transfer resistance is 19.31 ohms, and SEI resistance is 62.74 ohms after 30 cycles, whereas LZTO@MWCNTs exhibits much lower values, with charge transfer resistance at 7.93 ohms and SEI resistance at 12.06 ohms, highlighting its enhanced electrochemical properties.