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Abstract
Here, we report on an electrochemical impedance study of silica of organic origin as an active electrode material. The electrode material obtained from carbonized marine biomass containing nanoporous diatoms has been characterised by means of XRD, IR, SEM and EIS. Dif- ferent kinds of crystallographic phases of silica as a result of thermal treatment have been found. The electrode is electrochemically stable during subsequent cyclic voltam- metrymeasurements taken in the potential range from 0.005 up to 3.0 V vs. Li/Li+. The material has been found to exhibit high charge capacitance of 521 mAh g−1 being cycled at a rate C/20 with capacity retention of about 97%. Electrochemical impedance spectroscopy performed at an equilibrated potential E = 0.1 V in the temperature range 288–294 K discloses low charge transfer resistivity and low diffusional impedance
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- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
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JOURNAL OF SOLID STATE ELECTROCHEMISTRY
no. 21,
edition 8,
pages 2251 - 2258,
ISSN: 1432-8488 - Language:
- English
- Publication year:
- 2017
- Bibliographic description:
- Nowak A., Lisowska-Oleksiak A., Wicikowska B., Gazda M.: Biosilica from sea water diatoms algae—electrochemical impedance spectroscopy study// JOURNAL OF SOLID STATE ELECTROCHEMISTRY. -Vol. 21, iss. 8 (2017), s.2251-2258
- DOI:
- Digital Object Identifier (open in new tab) 10.1007/s10008-017-3561-z
- Verified by:
- Gdańsk University of Technology
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