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Axial heterostructure nanoarray as all‐solid‐state micro‐supercapacitors
Author(s) -
Xie Weichen,
Zhang Guofeng,
Chen Nan,
Liu Qianwen,
Qu Liangti
Publication year - 2019
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.4739
Subject(s) - pedot:pss , supercapacitor , materials science , heterojunction , capacitance , nanotechnology , flexibility (engineering) , electrode , substrate (aquarium) , optoelectronics , chemistry , layer (electronics) , statistics , mathematics , oceanography , geology
Summary The end‐to‐end axial heterojunction one‐dimensional nanoarray combined poly(3,4‐ethylenedioxythiophene) (PEDOT) and manganese dioxide (MnO 2 ) have been successfully designed and fabricated. The electrochemical performance was investigated in detail after processing the axial PEDOT/MnO 2 heterostructure nanoarray (APMHN) into flexible micro‐supercapacitors, namely, PM‐MSC. The presence of flexible PEDOT segment effectively improved the conductivity and also provided an important material basis for the preparation of flexible PM‐MSC. Further, PEDOT has good contact with both Au substrate and MnO 2 segment, ensuring that the charge can quickly shuttle back and forth between the electrode and the current collector. The PM‐MSC showed the highest specific capacitance of 209.89 mF·cm −2 compared with the P‐MSC assembled from PEDOT nanoarray and M‐MSC assembled from MnO 2 nanoarray. The PM‐MSC possesses good flexibility, making the capacitance performance of the PM‐MSC show almost no deterioration under the 180° bent state. Moreover, several series or parallel PM‐MSCs enable a variety of electronic devices to work properly. The APMHN exhibits some new advantages, enabling the integration of physical and chemical properties of the two separate components, while providing a new way of thinking for the design and manufacture of MSC for flexibility.