Deep Eutectic Electrolyte

Flame-retardant and safe

Synergistic optimization of SN-based deep eutectic system with NMA and VC forms an anion-rich interphase at elevated temperatures, markedly improving interfacial stability and intrinsic safety.

Chen, Jian · Yang, Zhuo · Xu, Xu · Qiao, Yun · Xue-Jiao, Xu · Liu, Xueting · Shen, Yue · Yu, Xinrun · Hu, Xianluo · Yang, Liu · Liang, Zheng · Huang, Yunhui

ACS Energy Letters 2026

Specifications

Capacity retention

{'zh': '71.0', 'en': '71.0'} %

Advantages

Flame-retardant at high temperature

The electrolyte remains flame-retardant at elevated temperature, reducing thermal runaway risk.

Shear resistant

Pouch cells maintain integrity under mechanical shear, enhancing mechanical safety.

Stable cycling

Capacity retention of 71.0% after 500 cycles, indicating suppressed interfacial side reactions.

Applications

• Sodium-ion batteries：Can directly replace flammable electrolytes in sodium-ion batteries.
• High-safety electrolytes：Inherently flame-retardant, enhancing battery safety.
• Battery thermal management：Stable at high temperature, reducing cooling system dependency.
• Energy storage systems：Suitable for energy storage requiring high safety.