Superelastic Few-Layer Carbon Foam Made from Natural Cotton for All-Solid-State Electrochemical Capacitors

详细信息    查看全文

• 作者：Tianquan Lin ; Fengxin Liu ; Feng Xu ; Hui Bi ; Yahui Du ; Yufeng Tang ; Fuqiang Huang
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2015
• 出版时间：November 18, 2015
• 年：2015
• 卷：7
• 期：45
• 页码：25306-25312
• 全文大小：538K
• ISSN：1944-8252

文摘

Flexible/stretchable devices for energy storage are essential for future wearable and flexible electronics. Electrochemical capacitors (ECs) are an important technology for supplement batteries in the energy storage and harvesting field, but they are limited by relatively low energy density. Herein, we report a superelastic foam consisting of few-layer carbon nanowalls made from natural cotton as a good scaffold to growth conductive polymer polyaniline for stretchable, lightweight, and flexible all-solid-state ECs. As-prepared superelastic bulk tubular carbon foam (surface area 鈭?50 m²/g) can withstand >90% repeated compression cycling and support >45,000 times its own weight but no damage. The flexible device has a high specific capacitance of 510 F g^鈥?, a specific energy of 25.5 Wh kg^鈥? and a power density of 28.5 kW kg^鈥? in weight of the total electrode materials and withstands 5,000 charging/discharging cycles.