基于i-卡拉胶掺杂NH4HCO2固体电解质的电化学电池的制备

IF 3 4区材料科学 Q3 CHEMISTRY, PHYSICAL

Solid State Ionics Pub Date : 2025-01-01 DOI:10.1016/j.ssi.2024.116757

V. Moniha , K. Venkatesh , M. Premalatha , S. Monisha , S. Selvalakshmi , B. Archana , M. Alagar , B. Sundaresan

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引用次数: 0

摘要

采用溶液铸造法，在不同浓度的NH4HCO2条件下制备了一种基于iota卡拉胶（iCG）的天然聚合物电解质（NPE）。选用蒸馏水作为溶剂。对iCG: NH4HCO2体系的结构、热、电和电化学分析证实了其非晶性、低玻璃化转变温度（Tg = 48°C）、最大直流电导率和电化学稳定性（3.11 V）。在1 g iCG: 0.4 wt% NH4HCO2体系中，最大直流电导率为1.94 × 10−3 S cm−1。以MnO2为正极，Zn/ZnSO4·7H2O为阳极为正极，构建了一次质子电池（PPB），并对1 g iCG: 0.4 wt% NH4HCO2 NPE的效率进行了评价。此外，用1g iCG: 0.4 wt% NH4HCO2 NPE制备了单个PEMFC。PPB和PEM燃料电池的OCV分别为1.60 V和616 mV。

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Fabrication of electrochemical cell based on i-carrageenan doped NH4HCO2 solid electrolyte

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Fabrication of electrochemical cell based on i-carrageenan doped NH4HCO2 solid electrolyte

Solution casting method was used to develop a natural polymer electrolyte (NPE) based on iota carrageenan (iCG) using different amounts of NH₄HCO₂. Distilled Water was chosen as the solvent. The structural, thermal, electrical, and electrochemical analyses of the iCG: NH₄HCO₂ system confirmed its non-crystalline nature, low glass transition temperature (T_g = 48 °C), maximum DC conductivity and electrochemical stability (3.11 V). The maximum DC conductivity for the composition 1 g iCG: 0.4 wt% NH₄HCO₂ was observed to be 1.94 × 10⁻³ S cm⁻¹. A primary proton battery (PPB) was constructed by sandwiching the optimum electrolyte between MnO₂ as the cathode and Zn/ZnSO₄·7H₂O as the anode to evaluate the efficiency of the 1 g iCG: 0.4 wt% NH₄HCO₂ NPE. Additionally, a single PEMFC was fabricated with 1 g iCG: 0.4 wt% NH₄HCO₂ NPE. An OCV for PPB and PEM fuel cell were found to be 1.60 V and 616 mV, respectively.

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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.