整改
纳米纤维素
离子键合
膜
二极管
化学
纳米技术
高分子化学
材料科学
化学工程
高分子科学
纤维素
有机化学
离子
光电子学
电压
工程类
生物化学
电气工程
作者
Hongli Yang,Jesper Edberg,Mehmet Girayhan Say,Johan Erlandsson,Viktor Gueskine,Lars Wågberg,Magnus Berggren,Isak Engquist
标识
DOI:10.1021/acs.biomac.3c01353
摘要
Nanocellulose-based membranes have attracted intense attention in bioelectronic devices due to their low cost, flexibility, biocompatibility, degradability, and sustainability. Herein, we demonstrate a flexible ionic diode using a cross-linked bipolar membrane fabricated from positively and negatively charged cellulose nanofibrils (CNFs). The rectified current originates from the asymmetric charge distribution, which can selectively determine the direction of ion transport inside the bipolar membrane. The mechanism of rectification was demonstrated by electrochemical impedance spectroscopy with voltage biases. The rectifying behavior of this kind of ionic diode was studied by using linear sweep voltammetry to obtain current–voltage characteristics and the time dependence of the current. In addition, the performance of cross-linked CNF diodes was investigated while changing parameters such as the thickness of the bipolar membranes, the scanning voltage range, and the scanning rate. A good long-term stability due to the high density cross-linking of the diode was shown in both current–voltage characteristics and the time dependence of current.
科研通智能强力驱动
Strongly Powered by AbleSci AI