Highly Effective Self-Propagating Synthesis of Lamellar ZnO-Decorated MnO₂ Nanocrystals with Improved Supercapacitive Performance.

ABSTRACT: A series of MO_x (M = Co, Ni, Zn, Ce)-modified lamellar MnO₂ electrode materials were controllably synthesized with a superfast self-propagating technology and their electrochemical practicability was evaluated using a three-electrode system. The results demonstrated that the specific capacitance varied with the heteroatom type as well as the doping level. The low ZnO doping level was more beneficial for improving electrical conductivity and structural stability, and Mn10Zn hybrid nanocrystals exhibited a high specific capacitance of 175.3 F·g^-1 and capacitance retention of 96.9% after 2000 cycles at constant current of 0.2 A·g^-1. Moreover, XRD, SEM, and XPS characterizations confirmed that a small part of the heteroatoms entered the framew

SUBMITTER: Li L 

PROVIDER: S-EPMC8306293 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature