High-rate asymmetrical supercapacitors based on cobalt-doped birnessite nanotubes and Mn-FeOOH nanotubes. Issue 22 (27th February 2020)

• Record Type: Journal Article
• Authors: Shen, Man; Zhu, Shi Jin; Guo, Ziyang; Fu, Xin; Huo, Wangchen; Jing, Chuan; Liu, Xiaoying; Zhang, Yu Xin
• Is Part Of: Chemical communications. Volume 56:Issue 22(2020)
• Page Start: 3257
• Page End: 3260
• Publication Date: 2020-02-27
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/d0cc00749h
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : Herein, we firstly prepared Co-doped birnessite and Mn-FeOOH nanotubes by a simple hydrothermal process using a sacrificed template method. The doping ratio was adjusted by setting the molar ratios of Co and Mn in the preparing process. Both the Co-doped birnessite and Mn-FeOOH nanotubes exhibit ideal electrochemical properties, especially their excellent rate capability. Abstract : Co-Doped MnO2 nanotubes (Co-MnO2 -5) were prepared as the positive electrode of supercapacitors via a simple one-step hydrothermal method. Co doping and one-dimensional tunneling of nanotubes result in low internal resistance and good ionic contact, enhancing the conductivity and electrochemical performance of the electrodes.