In:
ChemSusChem, Wiley, Vol. 10, No. 7 ( 2017-04-10), p. 1600-1606
Abstract:
Salinity‐gradient energy (SGE) is a renewable energy source available wherever two solutions with different salinity mix. Capacitive‐mixing (Capmix) is a technology that directly extracts the SG potential through the movements of ions in high‐ and low‐concentration solutions. However, the energy‐harvesting performance of Capmix needs further improvement. Herein, a hybrid Capmix that consists of a battery and capacitive electrodes is proposed. In this system, sodium ions and anions are captured/released by the metal oxide and carbon electrodes, respectively. The hybrid Capmix extracted an energy density that was approximately three times higher (130 J m −2 ) and exhibited a notable power output (97 mW m −2 ) compared to the previous Capmix using ion‐exchange membranes. Furthermore, the hybrid system operated successfully with real river water and seawater. These results suggest that the hybrid Capmix could be a viable option to harvest energy from salinity gradients.
Type of Medium:
Online Resource
ISSN:
1864-5631
,
1864-564X
DOI:
10.1002/cssc.201601656
Language:
English
Publisher:
Wiley
Publication Date:
2017
detail.hit.zdb_id:
2411405-4
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