کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5030944 | 1470934 | 2017 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
An oxygen-independent and membrane-less glucose biobattery/supercapacitor hybrid device
ترجمه فارسی عنوان
یک دستگاه هیبریدی بیوتکنولوژی گلوکز / سوپراسپرتزر مستقل از اکسیژن و بدون غشا
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
Enzymatic biofuel cells can generate electricity directly from the chemical energy of biofuels in physiological fluids, but their power density is significantly limited by the performance of the cathode which is based on oxygen reduction for in vivo applications. An oxygen-independent and membrane-less glucose biobattery was prepared that consists of a dealloyed nanoporous gold (NPG) supported glucose dehydrogenase (GDH) bioanode, immobilised with the assistance of conductive polymer/Os redox polymer composites, and a solid-state NPG/MnO2 cathode. In a solution containing 10 mM glucose, a maximum power density of 2.3 µW cmâ2 at 0.21 V and an open circuit voltage (OCV) of 0.49 V were registered as a biobattery. The potential of the discharged MnO2 could be recovered, enabling a proof-of-concept biobattery/supercapacitor hybrid device. The resulting device exhibited a stable performance for 50 cycles of self-recovery and galvanostatic discharge as a supercapacitor at 0.1 mA cmâ2 over a period of 25 h. The device could be discharged at current densities up to 2 mA cmâ2 supplying a maximum instantaneous power density of 676 μW cmâ2, which is 294 times higher than that from the biobattery alone. A mechanism for the recovery of the potential of the cathode, analogous to that of RuO2 (Electrochim. Acta 42(23), 3541-3552) is described.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biosensors and Bioelectronics - Volume 98, 15 December 2017, Pages 421-427
Journal: Biosensors and Bioelectronics - Volume 98, 15 December 2017, Pages 421-427
نویسندگان
Xinxin Xiao, Peter à Conghaile, Dónal Leech, Roland Ludwig, Edmond Magner,