## 3 Results and Discussion
### Electrochemical Performance Measurement of LTO in LTO/LFP Battery
\begin{table}
\begin{tabular}{l c c c c c c c c} \hline \hline
**LTO Preconsors** & **Methods** & **Particles** & **Electrochemical** & **Initial Specific** & & & & \\  & & **Size** & **Testing** & & **Capacity (mAbs)** & & & & \\ \hline TCLs + L\({}_{3}\)CO\({}_{3}\) & Sol-gel & 5-20 \(\mu\)m & Half Cell & 158 mAlvig at 0.1 C & 75.99\% after 50 cycles at 0.1 C & 70 mAlvig at 1 C & [56] \\ LINO\({}_{3}\) + TITP & Spray pyrolysis & 1.5 \(\mu\)m & Half Cell & 175 mAlvig at 0.1 C & 81.14\% after 30 cycles at 0.1 C & 105 mAlvig at 1 C & [57] \\ LOFH\({}_{3}\)O + TITP & Supercritical Hydrothermal & 20-50 \(\mu\)m & Half Cell & 149.6 mAlvig at 1 C & 95.52\% after 50 cycles at 1 C & 108 mAlvig at 1 C & [31] \\ LOFH\({}_{3}\)O + TIO\({}_{3}\) & Molen salt (CLKK) & +5.5 \(\mu\)m & Half Cell & 169 mAlvig at 2.0 C & 94.93\% after 50 cycles at 0.2 C & 130 mAlvig at 5 C & [34] \\ L\({}_{3}\)CO\({}_{3}\) + TIO\({}_{2}\) & Solid state (coated carbon) & 1-3 \(\mu\)m & Full cell (LTO vs. LFP) & 180 mAlvig at 0.1 C & 97.77\% after 400 cycles at 1 C & 80 mAlvig at 0.2 C & [55] \\ TCLs + LOFH\({}_{3}\)O & Sol-gel & 360 \(\mu\)m & Full Cell (LTO vs. NMC) & 149 mAlvig at 1 C & 93.23\% after 180 cycles at 1 C & 0 mAlvig at 1 C & [58] \\ Commercial LTO & - & 2 \(\mu\)m & Full Cell (LTO vs. LFP) & 147 mAlvig at 0.1 C & 51\% after 700 cycles at 0.5 C & 9 mAlvig at 10 C & [42] \\ LOHH + TIO\({}_{3}\) + NaCl & Salt-assisted solid state & 1.83-22\% & Full Cell (LTO vs. LFP) & 145.6 mAlvig at 0.3 C & 98\% after 800 cycles at 10C & 118 mAlvig at 10 C & This study \\ \hline \hline \end{tabular}
\end{table} 
Table 3: Summary of LTO performances from previous studiesSince an LTO/LFP battery has an impressive cyclability, we perform a further cycle analysis using different cells and extended the cycles to 8000 in Figure 5b. During high rate charge/discharge using a 10 C-rate current, the capacity drop can be observed; however, at a certain point, the specific discharge capacity increases to around \(\approx\)120 mAh/g. The phenomenon occurred constantly and consistently up to 8000 cycles and consistent with every cell testing, which can be seen in Figure 4. Technically, this can be caused by a continuous cycling process with no significant resting time [59; 60] and due to the temperature fluctuation of the surrounding areas, which is not tightly controlled [18]. However, based on Figure 5a, the capacity fluctuation that occurred in an LTO 0 wt % NaCl is not significant compared to that of an LTO 4 wt % NaCl. Since the gradual decrease and increase of specific capacity significantly occurred in LTO 4 wt % NaCl, it can be concluded that the cell exhibits a self-recovery ability that can extend the cycle life of the cell due to the presence of NaCl. In addition, the cells were tested using a cylindrical (18,650 type) full cell, and it is safe to say that the results provide superior evidences for the mass production of LTO/LFP considerations with superior performance. The average capacity of LTO 4 wt % NaCl is 83.6 mAh/g, and based on 1 st cycle and 8000 th cycles, the capacity retention is 98%.