All-climate sodium ion batteries based on the NASICON electrode materials

作者：Liu, Tiefeng; Wang, Bo; Gu, Xingxing; Wang, Lei; Ling, Min; Liu, Gao^*; Wang, Dianlong^*; Zhang, Shanqing^*

来源：Nano Energy, 2016, 30: 756-761.

DOI：10.1016/j.nanoen.2016.09.024

• Cathode
• Sodium ion battery
• High-rate performance
• Low-temperature application

In this work, we have achieved all-climate high-rate performance of sodium ion batteries by utilizing electrode materials with Na Super Ionic Conductor (NASICON) crystalline structure. A designed NASI-CON-structured carbon-coated Na3V2(PO4)(3) (NVP@C) nanocomposite exhibits an excellent performance at high rates in a wide temperature range (Le., from -20 to 55 degrees C). Even at a low temperature of -20 degrees C, the NVP@C cathode can still maintain a discharge capacity of 91.3 mA h g(-1) or 85.2% of the room performance at 10C, and secure an average output voltage of 2.86 V (vs. Na+/Na). These excellent wide temperature accomplishments can be ascribed to fast three-dimensional Na hopping transportation mechanism in the NASICON structure. The finding in this work offers a promising strategy to address the long-standing inherent wide-temperature issues of rechargeable batteries and extends the potential application of sodium ion batteries.

• 出版日期2016-12
• 单位哈尔滨工业大学