Studies on structural, electrical and electrochemical properties of biodegradable PVP/starch blend polymer electrolytes with ammonium ceric nitrate for energy storage devices

IF 4 4区环境科学与生态学 Q2 ENVIRONMENTAL STUDIES

Energy & Environment Pub Date : 2022-07-26 DOI:10.1177/0958305X221116174

C. Nithya Priya, M. Muthuvinayagam, S. Ramesh, K. Ramesh

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Abstract

As a new approach, biodegradable solid polymer blend polymer electrolytes are prepared using a synthetic polymer Poly [vinyl pyrrolidone] (PVP) and a biopolymer Starch with constant amount of Ammonium ceric nitrate. The Biopolymer starch is used to enhance the biodegradability of the polymer membranes. The polymer electrolytes are prepared by solution casting method using deionized water as solvent. The prepared electrolytes are analyzed with structural, vibrational, electrical and electrochemical behavior by using different characterization techniques. The amorphous nature of the blend polymer electrolytes has been confirmed by X-Ray diffraction (XRD) analysis. PVP/cassava starch/ammonium ceric nitrate polymer electrolyte shows high amorphous nature. In FTIR study, polymers-salt complexation and molecular vibrations are observed in the electrolytes. The ionic conductivity and dielectric measurement of the electrolytes are carried out by impedance spectroscopy. The maximum ionic conductivity of 8.1 × 10−6 S/cm is observed at room temperature for 80% PVP: 20% cassava starch: 2% ammonium ceric nitrate (ACN) system. The dielectric properties of the prepared polymer electrolytes are also analyzed. The electrolyte having higher ionic conductivity is tested with cyclic voltammetry (CV) and linear sweep voltammetry (LSV) studies that reveal the electrochemical properties and range of potential window of the polymer electrolyte.

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生物可降解PVP/淀粉共混聚合物电解质与硝酸铈铵储能装置的结构、电学和电化学性能研究

以合成聚合物聚乙烯基吡咯烷酮(PVP)和生物聚合物淀粉为原料，加入一定量的硝酸铈铵，制备了可生物降解的固体聚合物共混电解质。生物聚合物淀粉用于提高聚合物膜的生物降解性。以去离子水为溶剂，采用溶液浇铸法制备聚合物电解质。采用不同的表征技术对制备的电解质进行了结构、振动、电学和电化学等方面的分析。通过x射线衍射(XRD)分析证实了共混聚合物电解质的无定形性质。PVP/木薯淀粉/硝酸铈铵聚合物电解质具有高无定形性质。在FTIR研究中，观察到电解质中聚合物-盐络合和分子振动。电解质的离子电导率和介电介质测量采用阻抗谱法进行。在室温下，80% PVP: 20%木薯淀粉:2%硝酸铈铵体系的最大离子电导率为8.1 × 10−6 S/cm。并对所制备的聚合物电解质的介电性能进行了分析。采用循环伏安法(CV)和线性扫描伏安法(LSV)对离子电导率较高的电解质进行了测试，揭示了聚合物电解质的电化学性质和电位窗口范围。

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来源期刊

Energy & Environment ENVIRONMENTAL STUDIES-

CiteScore

7.60

自引率

7.10%

发文量

157

期刊介绍： Energy & Environment is an interdisciplinary journal inviting energy policy analysts, natural scientists and engineers, as well as lawyers and economists to contribute to mutual understanding and learning, believing that better communication between experts will enhance the quality of policy, advance social well-being and help to reduce conflict. The journal encourages dialogue between the social sciences as energy demand and supply are observed and analysed with reference to politics of policy-making and implementation. The rapidly evolving social and environmental impacts of energy supply, transport, production and use at all levels require contribution from many disciplines if policy is to be effective. In particular E & E invite contributions from the study of policy delivery, ultimately more important than policy formation. The geopolitics of energy are also important, as are the impacts of environmental regulations and advancing technologies on national and local politics, and even global energy politics. Energy & Environment is a forum for constructive, professional information sharing, as well as debate across disciplines and professions, including the financial sector. Mathematical articles are outside the scope of Energy & Environment. The broader policy implications of submitted research should be addressed and environmental implications, not just emission quantities, be discussed with reference to scientific assumptions. This applies especially to technical papers based on arguments suggested by other disciplines, funding bodies or directly by policy-makers.