Nitrogen-Doped Carbon for Sodium-Ion Battery Anode by Self-Etching and Graphitization of Bimetallic MOF-Based Composite

作者：Chen, Yuming; Li, Xiaoyan; Park, Kyusung; Lu, Wei; Wang, Chao; Xue, Weijiang; Yang, Fei; Zhou, Jiang; Suo, Liumin; Lin, Tianquan; Huang, Haitao^*; Li, Ju^*; Goodenough, John B.^*

来源：Chem, 2017, 3(1): 152-163.

DOI：10.1016/j.chempr.2017.05.021

• METAL-ORGANIC FRAMEWORKS
• IN-SITU FORMATION
• LITHIUM-ION
• RATE CAPABILITY
• SUPERIOR RATE
• HARD CARBON
• NANOTUBES
• GRAPHENE
• NANOFIBERS
• STORAGE

The greater availability of sodium (Na) over lithium (Li) motivates development of a Na-ion battery that can compete with a Li-ion battery. In these batteries, both electrodes consist of hosts intowhich Li+ or Na+ can be inserted reversibly. Graphite has been the anode host for Li-ion batteries, but the Na+ ion is too large to be inserted easily between the flat graphene layers of common graphite. We report the synthesis and electrochemical performance of N-doped carbon nanofibers and tubules with an organic-liquid electrolyte and a large fraction of graphitic carbon and larger spacing (0.38-0.44 nm) between carbon sheets; the carbon hollow tubules yield ultrastable (10,000 cycles), high-rate capabilities of Na+ intercalation and deintercalation with reversible capacities up to 346 mAh g(-1).

• 出版日期2017-7-13