Electrostatic spray deposition of Li4Ti5O12 based anode with enhanced rate capability and energy density for lithium-ion batteries

Chunhui Chen; Richa Agrawal; Chunlei Wang

doi:10.1117/12.2228905

17 May 2016 Electrostatic spray deposition of Li₄Ti₅O₁₂ based anode with enhanced rate capability and energy density for lithium-ion batteries

Chunhui Chen, Richa Agrawal, Chunlei Wang

Author Affiliations +

Proceedings Volume 9865, Energy Harvesting and Storage: Materials, Devices, and Applications VII; 986507 (2016) https://doi.org/10.1117/12.2228905
Event: SPIE Commercial + Scientific Sensing and Imaging, 2016, Baltimore, MD, United States

Abstract

Li₄Ti₅O₁₂ (LTO) is one of the most promising anode materials for lithium-ion batteries (LIBs) due to its excellent cyclability and extraordinary structure stability during lithium-ion intercalation and deintercalation. However, LTO suffers from the low electronic conductivity and low theoretical capacity, which results in poor rate capability and low energy density. The present work reviews the latest achievement on improving both energy and power density of LTO based anode materials for LIBs. In addition, our recent results on electrostatic spray deposition (ESD) derived LTO electrode is also discussed. Electrochemical test shows that the resulting LTO has a large specific capacity of 293 mAh g^-1 under a current density of 0.15 A g^-1 and high rate capacity of 73 mAh g^-1 under 3 A g^-1. As compared with commercial LTO nano-particle electrode, the improved electrochemical performance of ESD-LTO could be attributed to the structure advantages generate from ESD which could lead to reduced diffusion length for lithium ions and electrons.

Citation Download Citation

Chunhui Chen, Richa Agrawal, and Chunlei Wang "Electrostatic spray deposition of Li₄Ti₅O₁₂ based anode with enhanced rate capability and energy density for lithium-ion batteries", Proc. SPIE 9865, Energy Harvesting and Storage: Materials, Devices, and Applications VII, 986507 (17 May 2016); https://doi.org/10.1117/12.2228905

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