A battery composed of a polypyrrole cathode and a magnesium alloy anode—Toward a bioelectric battery
| Autor: | Yong Kong, Chee O. Too, Yang Yang, Gordon G. Wallace, Caiyun Wang |
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| Rok vydání: | 2012 |
| Předmět: |
Battery (electricity)
Materials science Mechanical Engineering Inorganic chemistry Metals and Alloys Potassium-ion battery Electrolyte Condensed Matter Physics Electrochemistry Cathode Electronic Optical and Magnetic Materials law.invention Anode Mechanics of Materials law Linear sweep voltammetry Materials Chemistry Cyclic voltammetry |
| Zdroj: | Synthetic Metals. 162:584-589 |
| ISSN: | 0379-6779 |
| DOI: | 10.1016/j.synthmet.2012.01.021 |
| Popis: | A bioelectric battery can be implanted into the human body and relies on oxygen in the internal body fluid to produce electrical energy. In this work, a battery that uses polypyrrole doped with a biological polyelectrolyte (dextran sulfate, an anti-coagulant) as the cathode and bioresorbable Mg alloy (AZ61) as the anode was developed. This battery exhibited a discharge capacity of 565 mA h g−1 in phosphate buffered saline (PBS, pH = 7.4), a commonly used electrolyte in biological research; offering a specific energy density of ∼790 W h kg−1. The electrochemical properties of the cathode, anode and battery itself were investigated in different aqueous electrolytes. Cyclic voltammetry, linear sweep voltammetry, AC impedance, galvanostatic charge/discharge, and field-emission scanning microscopy techniques were applied for characterization. |
| Databáze: | OpenAIRE |
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