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

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-MoO3-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-MoO3-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-MoO3-x electrode opens the way to integrate the electricity generation and storage for self-powered sources.

[1]  Zenan Yu,et al.  Energy Storing Electrical Cables: Integrating Energy Storage and Electrical Conduction , 2014, Advanced materials.

[2]  D. Su.  Electron beam induced changes in transition metal oxides , 2002, Analytical and bioanalytical chemistry.

[3]  Zhibin Yang,et al.  Integrating perovskite solar cells into a flexible fiber. , 2014, Angewandte Chemie.

[4]  Yunlong Zhao,et al.  Synergistic effect of hierarchical nanostructured MoO2/Co(OH)2 with largely enhanced pseudocapacitor cyclability. , 2013, Nano letters.

[5]  Hui Huang,et al.  All Metal Nitrides Solid‐State Asymmetric Supercapacitors , 2015, Advanced materials.

[6]  Minbaek Lee,et al.  Single‐Fiber‐Based Hybridization of Energy Converters and Storage Units Using Graphene as Electrodes , 2011, Advanced materials.

[7]  Ping Xu,et al.  Carbon Nanotube Fiber Based Stretchable Wire‐Shaped Supercapacitors , 2014 .

[8]  C. Zhi,et al.  From industrially weavable and knittable highly conductive yarns to large wearable energy storage textiles. , 2015, ACS nano.

[9]  C. Wiemer,et al.  Valence band photoemission study of the Ti?Mo?N system , 1996 .

[10]  Jian Chang,et al.  Coaxial fiber supercapacitor using all-carbon material electrodes. , 2013, ACS nano.

[11]  Dingshan Yu,et al.  Transforming Pristine Carbon Fiber Tows into High Performance Solid‐State Fiber Supercapacitors , 2015, Advanced materials.

[12]  Minghao Yu,et al.  A Novel Exfoliation Strategy to Significantly Boost the Energy Storage Capability of Commercial Carbon Cloth , 2015, Advanced materials.

[13]  Charles C. L. McCrory,et al.  Benchmarking heterogeneous electrocatalysts for the oxygen evolution reaction. , 2013, Journal of the American Chemical Society.

[14]  Bin Liu,et al.  Fiber-based flexible all-solid-state asymmetric supercapacitors for integrated photodetecting system. , 2014, Angewandte Chemie.

[15]  Yu-Lun Chueh,et al.  Fiber-based all-solid-state flexible supercapacitors for self-powered systems. , 2012, ACS nano.

[16]  L. Qu,et al.  All‐Graphene Core‐Sheath Microfibers for All‐Solid‐State, Stretchable Fibriform Supercapacitors and Wearable Electronic Textiles , 2013, Advanced materials.

[17]  Xia Zhang,et al.  Investigation of a Branchlike MoO(3)/polypyrrole hybrid with enhanced electrochemical performance used as an electrode in supercapacitors. , 2014, ACS applied materials & interfaces.

[18]  Hua Zhang,et al.  A new type of porous graphite foams and their integrated composites with oxide/polymer core/shell nanowires for supercapacitors: structural design, fabrication, and full supercapacitor demonstrations. , 2014, Nano letters.

[19]  Fang Qian,et al.  Solar-assisted microbial fuel cells for bioelectricity and chemical fuel generation , 2014 .

[20]  Huisheng Peng,et al.  A highly stretchable, fiber-shaped supercapacitor. , 2013, Angewandte Chemie.

[21]  D. Hercules,et al.  A surface study of cobalt-molybdena-alumina catalysts using x-ray photoelectron spectroscopy , 1976 .

[22]  Bo Chen,et al.  Reduced Graphene Oxide‐Wrapped MoO3 Composites Prepared by Using Metal–Organic Frameworks as Precursor for All‐Solid‐State Flexible Supercapacitors , 2015, Advanced materials.

[23]  Zhen He,et al.  Self-biased solar-microbial device for sustainable hydrogen generation. , 2013, ACS nano.

[24]  Shuai Wang,et al.  Design hierarchical electrodes with highly conductive NiCo2S4 nanotube arrays grown on carbon fiber paper for high-performance pseudocapacitors. , 2014, Nano letters.

[25]  P. Taberna,et al.  Monolithic Carbide-Derived Carbon Films for Micro-Supercapacitors , 2010, Science.

[26]  Dingshan Yu,et al.  Controlled Functionalization of Carbonaceous Fibers for Asymmetric Solid‐State Micro‐Supercapacitors with High Volumetric Energy Density , 2014, Advanced materials.

[27]  Lixia Yuan,et al.  Morphosynthesis of a hierarchical MoO2 nanoarchitecture as a binder-free anode for lithium-ion batteries , 2011 .

[28]  Jian Jiang,et al.  Recent Advances in Metal Oxide‐based Electrode Architecture Design for Electrochemical Energy Storage , 2012, Advanced materials.

[29]  Xinyu Cheng,et al.  Holey Tungsten Oxynitride Nanowires: Novel Anodes Efficiently Integrate Microbial Chemical Energy Conversion and Electrochemical Energy Storage , 2015, Advanced materials.

[30]  S. Xie,et al.  Asymmetric Supercapacitors Based on Graphene/MnO2 Nanospheres and Graphene/MoO3 Nanosheets with High Energy Density , 2013 .

[31]  D. Su,et al.  Electron Beam Induced Structure Transformation of MoO3 to MoO2 and A New Phase MoO , 2004 .