Enhancing electrochemical performance of alginate–PVA solid blend electrolytes via H+ ion doping for supercapacitor applications

IF 3 4区材料科学 Q3 CHEMISTRY, PHYSICAL

Solid State Ionics Pub Date : 2024-08-07 DOI:10.1016/j.ssi.2024.116650

N.M. Ghazali , N.F. Mazuki , M.H. Sulaiman , K. Aoki , Y. Nagao , A.S. Samsudin

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Abstract

This study investigates the enhancement of electrochemical performance in alginate–polyvinyl alcohol (PVA) solid blend electrolytes through H⁺ ion doping for supercapacitor applications. Employing the solution casting method, we tailored electrolyte systems doped with nitric acid (HNO₃). Impedance studies reveal a substantial increase in ionic conductivity (2.71 × 10⁻⁴ S cm⁻¹ at room temperature) with 3 M HNO₃ doping. Fourier-transform infrared spectroscopy and transference number measurements confirm the effective protonation of the polymer matrix. Temperature-dependent behavior analysis demonstrates robust performance across various thermal conditions. Linear sweep voltammetry studies showcase excellent electrochemical stability, while galvanostatic charge-discharge profiles exhibit reliable cyclic performance, with an average specific capacitance of approximately 6.76 F/g. This research underscores the potential of tailored solid blend electrolytes doped with H⁺ ions to elevate supercapacitor technology.

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通过掺杂 H+ 离子提高超级电容器应用中藻酸盐-PVA 固体混合电解质的电化学性能

本研究探讨了如何通过掺杂 H 离子提高藻酸盐-聚乙烯醇（PVA）固体混合电解质的电化学性能，以应用于超级电容器。利用溶液浇铸法，我们定制了掺杂硝酸（HNO）的电解质系统。阻抗研究显示，掺杂 3 M HNO 后，离子电导率大幅提高（室温下为 2.71 × 10 S cm）。傅立叶变换红外光谱和转移数测量证实了聚合物基质的有效质子化。随温度变化的行为分析表明，在不同的热条件下都能保持稳定的性能。线性扫描伏安法研究显示了出色的电化学稳定性，而电静态充放电曲线则显示了可靠的循环性能，平均比电容约为 6.76 F/g。这项研究强调了掺杂 H 离子的定制固体混合电解质在提升超级电容器技术方面的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Solid State Ionics 物理-物理：凝聚态物理

CiteScore

6.10

自引率

3.10%

发文量

152

审稿时长

58 days

期刊介绍： This interdisciplinary journal is devoted to the physics, chemistry and materials science of diffusion, mass transport, and reactivity of solids. The major part of each issue is devoted to articles on: (i) physics and chemistry of defects in solids; (ii) reactions in and on solids, e.g. intercalation, corrosion, oxidation, sintering; (iii) ion transport measurements, mechanisms and theory; (iv) solid state electrochemistry; (v) ionically-electronically mixed conducting solids. Related technological applications are also included, provided their characteristics are interpreted in terms of the basic solid state properties. Review papers and relevant symposium proceedings are welcome.