A novel coronene//Na2Ti3O7 dual-ion battery

作者：Dong, Shengyang; Li, Zhifei; Rodriguez-Perez, Ismael A.; Jiang, Heng; Lu, Jun^*; Zhang, Xiaogang^*; Ji, Xiulei^*

来源：Nano Energy, 2017, 40: 233-239.

DOI：10.1016/j.nanoen.2017.08.022

• Sodium dual-ion battery
• Anion intercalation
• Graphene-coated Na2Ti3O7
• Coronene
• Cycling life

Here we construct a novel sodium dual-ion battery (Na-DIB) with a conventional alkyl/alkylene carbonate electrolyte by using reduced-graphene-oxide-coated Na2Ti3O7 (NTO@G) as the anode and coronene, a polycyclic aromatic hydrocarbon (PAH), as the cathode. The coronene//NTO@G configuration delivers a specific energy of 77 W h kg(-1), based on the total active mass in both electrodes, and excellent cycling stability with 80% capacity retention after 5000 cycles. In addition, this device can work well in a wide range of temperatures from -20 to 40 degrees C. The results demonstrate a proof-of-concept Na-DIB that avoids the challenges of conventional dual-graphite DIBs by utilizing non-graphite intercalation anode and cathode, and a carbonate-based electrolyte without any additives.

• 出版日期2017-10
• 单位南京航空航天大学; 中国社会科学院