1. Activated Carbon/DNA Composite Electrodes for Electric Double Layer Capacitors with Neutral Aqueous Electrolytes
- Author
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Masashi Ishikawa, Yoshiaki Okuhama, Yoshiharu Matsuda, Shigeaki Yamazaki, and Keigo Obata
- Subjects
chemistry.chemical_classification ,Aqueous solution ,Chemistry ,Inorganic chemistry ,Salt (chemistry) ,Electrolyte ,Electric double-layer capacitor ,Capacitance ,law.invention ,Capacitor ,law ,Electrode ,Electrochemistry ,medicine ,Activated carbon ,medicine.drug - Abstract
A novel electrode composed of activated carbon and DNA together with fluorinated binder has been prepared for an electric double layer capacitor (EDLC) with aqueous electrolytes. The DNA-loaded electrodes improve the rate capability and discharge capacitance of EDLC containing aqueous, neutral salt electrolytes. In contrast, the DNA-composite electrodes have a poor effect on the capacitance enhancement in acidic or basic electrolytes. The enhancement of discharge capacitance is significant especially at high-rate cycling in neutral salt electrolytes, because the presence of DNA reduces the internal resistance of an electrode and hence improves its rate capability.
- Published
- 2007
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