Extreme Fast‑Charge LVO Pouch Cells: 10C 4.8 min to 80% High‑Performing Lithium Vanadium Oxide Battery Degradation Analysis and Life Prediction

This study analyzes the performance and degradation behavior of Tyfast’s lithium vanadium oxide (LVO) pouch cells designed for extreme fast‑charging. LVO anodes, derived from disordered rock‑salt structures, support rapid lithium transport with minimal structural distortion. Multi‑layer pouch cells (2–10 Ah) were evaluated under 0.5C and 10C cycling. At 10C, the cells reached 80% state‑of‑charge in 4.8 minutes, demonstrating exceptional fast‑charge capability. Capacity retention remained ~93% after 1,000 cycles, outperforming typical graphite/LFP cells that degrade significantly under 3C–5C charging. Degradation analysis revealed an initial exponential decay followed by a linear region beginning around 1,600 cycles, with a low decay slope of ~1.29% per 1,000 cycles. Differential capacity (dQ/dV) plots showed a single dominant electrochemical reaction with minimal voltage polarization, indicating high reversibility and low internal resistance. Hysteresis analysis revealed only ~3.1% energy loss per charge–discharge loop. Overall, LVO cells exhibit strong long‑term stability, predictable electrochemical behavior, and superior high‑rate performance, making them promising candidates for next‑generation fast‑charging applications.