TitleHigh carrier concentration ZnO nanowire arrays for binder-free conductive support of supercapacitors electrodes by Al doping
AuthorsZheng, Xin
Sun, Yihui
Yan, Xiaoqin
Sun, Xu
Zhang, Guangjie
Zhang, Qian
Jiang, Yaru
Gao, Wenchao
Zhang, Yue
AffiliationUniv Sci & Technol Beijing, Sch Mat Sci & Engn, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China.
Univ Sci & Technol Beijing, Key Lab New Energy & Nanotechnol, Beijing 100083, Peoples R China.
Peking Univ, Coll Engn, Beijing 100084, Peoples R China.
KeywordsAl-doping
ZnO nanowire arrays
Conductivity
Energy storage
ELECTROCHEMICAL ENERGY-STORAGE
HIGH-PERFORMANCE
NANOTUBE ARRAYS
SURFACE-AREA
DOPED ZNO
LAYER
FABRICATION
COMPOSITES
NANOROD
DESIGN
Issue Date2016
PublisherJOURNAL OF COLLOID AND INTERFACE SCIENCE
CitationJOURNAL OF COLLOID AND INTERFACE SCIENCE.2016,484,155-161.
AbstractDoping semiconductor nanowires (NWs) for altering their electrical and optical properties is a critical strategy for tailoring the performance of nanodevices. Here, we prepared in situ Al-doped ZnO nanowire arrays by using continuous flow injection (CFI) hydrothermal method to promote the conductivity. This reasonable method offers highly stable precursor concentration for doping that effectively avoid the appearance of the low conductivity ZnO nanosheets. Benefit from this, three orders of magnitude rise of the carrier concentration from 10(16) cm(-3) to 10(19) cm(-3) can be achieved compared with the common hydrothermal (CH) mothed in Mott-Schottky measurement. Possible effect of Al-doping was discussed by first-principle theory. On this basis, Al-doped ZnO nanowire arrays was developed as a binder-free conductive support for supercapacitor electrodes and high capacitance was triggered. It is owing to the dramatically decreased transfer resistance induced by the growing free-moving electrons and holes. Our results have a profound significance not merely in the controlled synthesis of other doping nanomaterials by co-precipitation method but also in the application of binder-free energy materials or other materials. (C) 2016 Elsevier Inc. All rights reserved.
URIhttp://hdl.handle.net/20.500.11897/492952
ISSN0021-9797
DOI10.1016/j.jcis.2016.08.070
IndexedSCI(E)
EI
PubMed
Appears in Collections:工学院

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