Solid polymer electrolytes chitosan

Overall, much effort has been made to develop biocompatible organic materials, which allows for the ultimate integration between the electronic device and biological system. The possibility of fabricating memory devices on biodegradable substrates, such as, rice paper and chitosan is also demonstrated. Biocompatible and flexible resistive switching memory devices are made on the basis of Ag-doped chitosan as the natural solid polymer electrolyte layer on the transparent and bendable substrate. Decomposable devices, where chitosan layer serves as the substrate while Mg as the electrode, have been also achieved (Hosseini and Lee, 2015). A comparison of the biocompatible material-based resistive switching memory devices is made in Table 3.2. 

Due to environmental concerns, there has been growing interest in the development of environmental-friendly polymer hosts made from natural sources such as com starch [895,896] and chitosan [734,897] or biodegradable materials such as poly(epsilon-caprolactone) [898] for solid-state electrolytes of ESs. Since the mechanical strength of natural polymers such as starch film was generally low, several studies reported the use of blended materials made from chitosan and starch [897] or chitosan and PEG [734]. 

Abstract The development of new materials that can be apphed as solid electrolytes has led to the creation of modern systems of energy generation and storage. Among different poly(ethylene oxide)-based electrolytes, natural polymers, snch as hydroxyethylcellnlose, hydroxypropylcellulose or carboxymethylcellulose, starch and chitosan or proteins like gelatin, are also proposed. After salt or acid addition, the transparent membranes show ionic conductivity values of 10 S/cm and can be apphed with good stability results to electrochromic devices. 

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