Unidirectionally aligned diphenylalanine nanotube/ microtube arrays with excellent supercapacitive performance  

作　　者：Jinlei Zhang Xinglong Wu Zhixing Gan Xiaobin Zhu Yamin Jin 

机构地区：[1]National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China

出　　处：《Nano Research》2014年第6期929-937,共9页纳米研究（英文版）

基　　金：Acknowledgements This work was supported by the National Basic Research Programs of China under Grants Nos. 2011CB922102 and 2013CB932901 and the National Natural Science Foundation of China （Nos. 11374141 and 21203098 ）.

摘　　要：High-temperature （150-220 ℃） growth leads to the formation of some peptide nanotube/microtube （NT/MT） arrays but the NTs/MTs exhibit closed ends, irreversible phase modification and eliminations of piezoelectric and hydrophilic properties. Here we demonstrate the fabrication of unidirectionally aligned and stable diphenylalanine NT/MT arrays with centimeter scale area at room temperature by utilizing an external electric field. The interactions between the applied electric field and dipolar electric field on the NTs and surface positive charges are responsible for the formation. The unidirectionally aligned MT array exhibits a supercapacitance of 1,000 μF·cm^-2 at a scanning rate of 50 mV·s^-1; this is much larger than the values reported previously in peptide NT/MT arrays.高温度(150220？？

关 键 词：FF nanotubes/microtubes aligned growth surface charge SUPERCAPACITANCE 

分 类 号：TB383[一般工业技术—材料科学与工程] TQ264.1[化学工程—有机化工]