@article{Zhou2022, 
author = {Jinhua Zhou and Qi Kang and Shuchi Xu and Xiaoge Li and Cong Liu and Lu Ni and Ningna Chen and Chunliang Lu and Xizhang Wang and Luming Peng and Xuefeng Guo and Weiping Ding and Wenhua Hou},
title = {Ultrahigh rate capability of 1D/2D polyaniline/titanium carbide (MXene) nanohybrid for advanced asymmetric supercapacitors},
year = {2022},
journal = {Nano Research},
volume = {15},
number = {1},
pages = {285-295},
keywords = {MXene, polyaniline, nanohybrid, asymmetric supercapacitor, rate capability},
url = {https://www.sciopen.com/article/10.1007/s12274-021-3472-2},
doi = {10.1007/s12274-021-3472-2},
abstract = {High energy density and enhanced rate capability are highly sought-after for supercapacitors in today's mobile world. In this work, polyaniline/titanium carbide (MXene) (PANI/Ti3C2Tx) nanohybrid is synthesized through a facile and cost-effective self-assembly of one-dimensional (1D) PANI nanofibers and two-dimensional (2D) Ti3C2Tx nanosheets. PANI/Ti3C2Tx delivers greatly improved specific capacitance, ultrahigh rate capability (67% capacitance retention from 1 to 100 A·g−1) as well as good cycle stability. Electrochemical kinetic analysis reveals that PANI/Ti3C2Tx is featured with surface capacitance-dominated process and has a quasi-reversible kinetics at high scan rates, giving rise to an ultrahigh rate capability. By using PANI/Ti3C2Tx as positive electrode, an 1.8 V aqueous asymmetric supercapacitor (ASC) is successfully assembled, showing a maximum energy density of 50.8 Wh·kg−1 (at 0.9 kW·kg−1) and a power density of 18 kW·kg−1 (at 26 Wh·kg−1). Moreover, an 3.0 V organic ASC is also elaborately fabricated by using PANI/Ti3C2Tx, achieving an ultrahigh energy density of 67.2 Wh·kg−1 (at 1.5 kW·kg−1) and a power density of 30 kW·kg−1  (at 26.8 Wh·kg−1). The present work not only improves fundamental understanding of the structure-property relationship towards ultrahigh rate capability electrode materials, but also provides valuable guideline for the rational design of high-performance energy storage devices with both high energy and power densities.}
}