Performance Evaluation and Analysis of Rolechem's New ARC-P14 and ARC-P15 Phosphorus-Based Compound Series

Rolechem has launched its new additives, ARC-P14 and ARC-P15. This series, based on phosphazene compounds, retains excellent flame-retardant properties while improving high-temperature and rate performance of the cell, without compromising low-temperature characteristics. We welcome industry partners to engage with us for further discussions.

Cell Type: 1Ah pouch cell Chemistry System: NCM622 / Graphite Voltage Window: 2.75 V – 4.35 V Electrolyte Baseline (Ref): EMC : EC : DEC = 5 : 3 : 2 , 1.1 M LiPF6, with VC additive Control Group: Electrolyte Baseline (Ref) Experimental Groups: 1% P14, 1% P15

When used as functional additives, phosphazene-based P14 and P15 show relatively higher impedance at room temperature; however, their impedance decreases significantly at low temperatures, resulting in minimal impact on the battery's low-temperature performance. As phosphazene-based additives, P14 and P15 form a protective film on the cathode side, leading to significant improvements in high-temperature performance. Cells exhibit clear advantages in capacity retention and recovery rates during 60°C storage, effectively suppressing gas generation and significantly reducing cell thickness swelling. Furthermore, they provide excellent rate capability, maintain good low-temperature discharge performance, and offer substantial improvements in high-temperature cycling stability.

In summary, ARC-P14 and ARC-P15 can function as flame-retardant additives. They facilitate film formation on the cathode side, suppress gas generation, improve high-temperature storage and cycling performance, enhance rate capability, and simultaneously improve the battery's low-temperature performance.