CO2-etching creates abundant closed pores in hard carbon for high-plateau-capacity sodium storage

• Main Authors: Zheng, Zhi, Hu, Sijiang, Yin, Wenji, Peng, Jiao, Wang, Rui, Jin, Jun, He, Beibei, Gong, Yansheng, Wang, Huanwen, Fan, Hong Jin
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2024
• Subjects: Physics; Closed pore; CO2-etching
• Online Access: https://hdl.handle.net/10356/173948
• Institution: Nanyang Technological University

Hard carbon (HC) has become the most promising anode material for sodium-ion batteries (SIBs), but its plateau capacity at ≈0.1 V (Na+/Na) is still much lower than that of graphite (372 mAh g−1) in lithium-ion batteries (LIBs). Herein, a CO2-etching strategy is applied to generate abundant closed po...