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Subzero‐Temperature Cathode for a Sodium‐Ion Battery

Ya You, Hurong Yao, Sen Xin, Ya‐Xia Yin, Tong‐Tong Zuo, Chunpeng Yang, Yu‐Guo Guo, Yi Ping Cui, Li‐Jun Wan, John Bannister Goodenough

📄 Abstract

A subzero-temperature cathode material is obtained by nucleating cubic prussian blue crystals at inhomogeneities in carbon nanotubes. Due to fast ionic/electronic transport kinetics even at -25 °C, the cathode shows an outstanding low-temperature performance in terms of specific energy, high-rate capability, and cycle life, providing a practical sodium-ion battery powering an electric vehicle in frigid regions.

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