Dual-Doped Molybdenum Trioxide Nanowires: A Bifunctional Anode for Fiber-Shaped Asymmetric Supercapacitors and Microbial Fuel Cells

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• 作者：Minghao Yu ; Xinyu Cheng ; Yinxiang Zeng ; Zilong Wang ; Prof. Yexiang Tong ; Prof. Xihong Lu and Prof. Shihe Yang
• 刊名：Angewandte Chemie International Edition
• 出版年：2016
• 出版时间：June 1, 2016
• 年：2016
• 卷：55
• 期：23
• 页码：6762-6766
• 全文大小：1461K
• ISSN：1521-3773

文摘

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 MoO₃, 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.