High-Rates Capability of High Nickel-Free Cobalt NMA as Cathode for Lithium-Ion Batteries
- Dr. Lukman Noerochim
- Nov 11, 2024
- 1 min read
Updated: Jun 6
📆 Date and time: Nov 11, 2024 03:00 PM Bangkok
✒️ Dr Lukman Noerochim
Sepuluh Nopember Institute of Technology (ITS), Indonesia
LiNi0.9Mn0.1-xAlxO2 (Li-NMA) (x = 0.01, 0.03, 0.05) cathodes were synthesized via the co-precipitation method and continued with the calcination process in a tube furnace at 750oC under a flowing oxygen gas for 12 hours. X-ray diffraction (XRD) reveals a well-formed and high-purity phase with a hexagonal structure. LiNi0.9Mn0.07Al0.03O2 (NMA 973) has the best electrochemical performance with the lower redox peak separation, the smallest charge transfer resistance (29.69 Ω cm-2), and the highest specific discharge capacity of 172 mAh g-1 at 0.1C after 100 cycles. In high current density at 1C, the NMA 973 has excellent specific discharge capacity compared to other samples. The optimal content of Mn and Al elements is a crucial factor to obtain the best electrochemical performance of NMA. Therefore, it shows that NMA 973 has a promising candidate as a cathode for high-energy-density lithium-ion batteries.
Presented by ECS Thailand Section and e-ASIA ReSPECT Webinar Series
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