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Synthesis and struc...
Synthesis and structure determination of potassium copper selenide nanowires and solid-state supercapacitor application
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Zhang, Kaiyou (författare)
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- Chen, Hong (författare)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK)
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Wang, Xue (författare)
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Guo, Donglin (författare)
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Hu, Chenguo (författare)
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Wang, Shuxia (författare)
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- Sun, Junliang (författare)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK)
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Leng, Qiang (författare)
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(creator_code:org_t)
- Elsevier BV, 2014
- 2014
- Engelska.
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Ingår i: Journal of Power Sources. - : Elsevier BV. - 0378-7753 .- 1873-2755. ; 268, s. 522-532
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The new ternary alkali metal copper chalcogenide KCu4Se8 nanowires with average length of 30 mu m are synthesized using a modified composite-hydroxide mediated (M-CHM) approach. The prepared KCu4Se8 is characterized by XRD, EDS, FESEM and TEM analysis. The structure is determined by the newly developed Rotation Electron Diffraction technique. It is identified to be a body center tetragonal phase. The prepared KCu4Se8 is used to fabricate solid-state supercapacitors in which the thin film of the electrodes are made with pressure of 0 MPa, 5 MPa and 10 MPa, and their electrochemical properties are tested. It is found that 0 MPa supercapacitor displays best electrochemical performance and the specific capacitance of 25.3 F g(-1) is obtained at the scan rate of 5 mV s(-1). It also shows good long-term cycle property by recording 5000 cycles of galvanostatic charge/discharge operation. The specific capacitance can be enhanced to 93.7 F g(-1) at the scan rate of 5 mV s(-1) by coating 0.1 mg V2O5 nanowire on 0 MPa KCu4Se8 electrode.
Ämnesord
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Nyckelord
- Potassium copper selenide
- Nanowire
- Supercapacitor
- Vanadium pentoxide
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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