(358d) Reserve Lithium-Ion Batteries for Lithium-Ion Free Cathodes
AIChE Annual Meeting
2021
2021 Annual Meeting
Topical Conference: Material Interfaces as Energy Solutions
Advanced batteries I
Monday, November 8, 2021 - 9:40am to 10:05am
We present a pioneering configuration called reserve lithium-ion batteries for in situ lithiation of the lithium-free electrodes with the use of lithium-electrode as a reservoir. For the initial formation of the SEI and lithiation of the MCMB electrode, a reservoir lithium electrode was brought into the cell circuitry. V2O5 cathode with meso carbon microbeads (MCMB) was used to fabricate high specific capacity and energy-dense reserved lithium-ion batteries (RLIBs). The RLIB system delivered a high charge specific capacity of 245 mAh g-1 at 0.2C rate. The tri-electrode system provided an initial high energy density of >880 Wh kg-1. A parallel comparison of electrochemical performance between V2O5 half-cell, V2O5-MCMB full-cell, and V2O5-MCMB RLIB was conducted and observed. There is a distinct resemblance in the performance of RLIB performance with half-cell profile and in terms of capacity versus cycle number. The pouch-cell configurations of this work yielded a high energy-dense system, which cycled stably over more than 200 cycles at 0.5C rate. Using this innovative concept of reservoir charging would be of great importance for applications in various sectors of the society viz., space exploration, UPS, healthcare, EVs, grid storage, etc.