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Dual‐Doped Molybdenum Trioxide Nanowires: A Bifunctional Anode for Fiber‐Shaped Asymmetric Supercapacitors and Microbial Fuel Cells
Author(s) -
Yu Minghao,
Cheng Xinyu,
Zeng Yinxiang,
Wang Zilong,
Tong Yexiang,
Lu Xihong,
Yang Shihe
Publication year - 2016
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201602631
Subject(s) - bifunctional , anode , supercapacitor , electrochemistry , materials science , molybdenum trioxide , nanowire , microbial fuel cell , power density , chemical engineering , nanotechnology , fiber , electrode , molybdenum , chemistry , composite material , metallurgy , organic chemistry , power (physics) , physics , quantum mechanics , engineering , catalysis
A novel in situ N and low‐valence‐state Mo dual doping strategy was employed to significantly improve the conductivity, active‐site accessibility, and electrochemical stability of MoO 3 , drastically boosting its electrochemical properties. Consequently, our optimized N‐MoO 3− x nanowires exhibited exceptional performances as a bifunctional anode material for both fiber‐shaped asymmetric supercapacitors (ASCs) and microbial fuel cells (MFCs). The flexible fiber‐shaped ASC and MFC device based on the N‐MoO 3− x anode could deliver an unprecedentedly high energy density of 2.29 mWh cm −3 and a remarkable power density of 0.76 μW cm −1 , respectively. Such a bifunctional fiber‐shaped N‐MoO 3− x electrode opens the way to integrate the electricity generation and storage for self‐powered sources.