Li4Ti5O12 (LTO) as a material for lithium ion batteries has garnered attention from industry and academia due to its increased safety properties, high rate capabilities, and exceptional cycling stability. The main concern arises in that cells using LTO anodes produce gas especially at elevated temperatures leading to swelling and decreased performance. It has been reported that this gassing is associated with the electrolyte and salt decomposition on the catalytic surface of the LTO anode1,3. In the open literature, efforts have been made to address the gassing issue through either coating on LTO materials2,4 or electrolyte technology3. In this work, we investigate the impact of various additives to the LTO-based cell performance in an electrolyte stabilization approach. Additives presented, including an electrolyte stabilizer, improved the electrochemical performance and reduced the gassing of pouch cells using LTO as anode and LiMn2O4 (LMO) as cathode. These results of electrochemical tests, surface analysis of the anode and cathode through XPS and FTIR will be discussed in the meeting. The results presented prove that electrolyte stabilization through use of functional additives can allow the benefits of LTO to be harnessed and the gassing behavior to be controlled.
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