The novel N-rich hard carbon nanofiber as high-performance electrode materials for sodium-ion batteries

• Published in: Ceramics international Vol. 47; no. 7; pp. 9118 - 9124
• Main Authors: Ma, Luxiang, Cao, Mengxiong, Zhao, Chun song, Huang, Shizhi, Ding, Jingyi, Chen, Jitao, Zhou, Yuan
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.04.2021
• Subjects: Eggshell membranes; High coulomb efficiency; N-rich carbon nanofibers; Sodium ion batteries; High coulomb efficiency; N-rich carbon nanofibers; Eggshell membranes; Sodium ion batteries
• ISSN: 0272-8842; 1873-3956
• DOI: 10.1016/j.ceramint.2020.12.035

The low initial Coulomb efficiency and low specific capacity have always been the bottleneck restricting the development of carbon materials in the large-scale field of sodium ion batteries (SIBs) energy storage. Furthermore, the enormous biomass resources are not used reasonably and are burned or buried as garbage. Here we use a simple direct sintering method to transform the kitchen bio-waste into N-rich carbon nanofibers. Among them, the N-rich carbon nanofibers heated at 1300 °C deliver the best electrochemical performances in the cycling stability, rate capability and capacity retention, documented by the high capacity retention of 301 mAh g−1 at 0.1C rate after 100 cycles with initial coulomb efficiency of 80.0%. The design construct of building low-cost bio-waste carbon materials provides a new approach to develop high-performance anode materials for the SIBs and even other battery systems.