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Pubmed for Handhelds

PUBMED FOR HANDHELDS

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  • Title: Shape-Tailorable Graphene-Based Ultra-High-Rate Supercapacitor for Wearable Electronics.
    Author: Xie B, Yang C, Zhang Z, Zou P, Lin Z, Shi G, Yang Q, Kang F, Wong CP.
    Journal: ACS Nano; 2015 Jun 23; 9(6):5636-45. PubMed ID: 25938988.
    Abstract:
    With the bloom of wearable electronics, it is becoming necessary to develop energy storage units, e.g., supercapacitors that can be arbitrarily tailored at the device level. Although gel electrolytes have been applied in supercapacitors for decades, no report has studied the shape-tailorable capability of a supercapacitor, for instance, where the device still works after being cut. Here we report a tailorable gel-based supercapacitor with symmetric electrodes prepared by combining electrochemically reduced graphene oxide deposited on a nickel nanocone array current collector with a unique packaging method. This supercapacitor with good flexibility and consistency showed excellent rate performance, cycling stability, and mechanical properties. As a demonstration, these tailorable supercapacitors connected in series can be used to drive small gadgets, e.g., a light-emitting diode (LED) and a minimotor propeller. As simple as it is (electrochemical deposition, stencil printing, etc.), this technique can be used in wearable electronics and miniaturized device applications that require arbitrarily shaped energy storage units.
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