纤维素-聚苯胺共混物在锂离子电池电解质中的应用

IF 5.7 Q2 ENERGY & FUELS
Seyedeh-Arefeh Safavi-Mirmahalleh, Mehdi Salami-Kalajahi
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引用次数: 0

摘要

天然聚合物作为电池组件具有多种优点,如广泛可用性、可生物降解性、不泄漏、固体形态稳定性、易于加工、电化学稳定性和低生产成本。相反,导电聚合物可以增强电池的电化学性能,提高储能容量、循环稳定性和充放电率等因素。因此,结合这两种类型的材料可以产生理想的性能。本研究以纤维素为基础,采用溶液浇铸法制备了聚合物薄膜。然后将聚苯胺(PANI)以不同的重量比与纤维素混合。对制备的电解质的电化学特性进行了分析,发现聚苯胺的加入通过形成空隙提高了离子电导率,并受益于导电聚合物的高介电常数。制备的电解质具有优异的离子电导率(加入聚苯胺后≈10−3 S cm−1),放电容量显著,循环稳定性稳定,电化学性能优异,稳定窗口超过4.5 V, Li+转移数在0.44 ~ 0.76之间。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Application of Cellulose-Polyaniline Blends as Electrolytes of Lithium-Ion Battery

Application of Cellulose-Polyaniline Blends as Electrolytes of Lithium-Ion Battery

Natural polymers offer several benefits as battery components, such as wide availability, biodegradability, non-leakage, stability in solid form, ease of processing, electrochemical stability, and low production costs. On the contrary, conductive polymers can enhance the battery's electrochemical performance, improving factors like energy storage capacity, cycling stability, and charge/discharge rates. Thus, combining these two types of materials can yield desirable properties. In this research, thin polymer films are produced based on cellulose using the solution casting method. Polyaniline (PANI) is then mixed with cellulose in various weight ratios. The electrochemical characteristics of the prepared electrolytes are analyzed, revealing that the addition of PANI increases ionic conductivity through creating voids and benefiting from the conductive polymers’ high dielectric constant. The prepared electrolytes demonstrate impressive ionic conductivity (≈10−3 S cm−1 upon incorporating PANI), remarkable discharge capacity, consistent cycling stability, outstanding electrochemical performance with a stability window exceeding 4.5 V, and a good Li+ transference number spanning from 0.44 to 0.76.

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来源期刊
CiteScore
8.20
自引率
3.40%
发文量
0
期刊介绍: Advanced Energy and Sustainability Research is an open access academic journal that focuses on publishing high-quality peer-reviewed research articles in the areas of energy harvesting, conversion, storage, distribution, applications, ecology, climate change, water and environmental sciences, and related societal impacts. The journal provides readers with free access to influential scientific research that has undergone rigorous peer review, a common feature of all journals in the Advanced series. In addition to original research articles, the journal publishes opinion, editorial and review articles designed to meet the needs of a broad readership interested in energy and sustainability science and related fields. In addition, Advanced Energy and Sustainability Research is indexed in several abstracting and indexing services, including: CAS: Chemical Abstracts Service (ACS) Directory of Open Access Journals (DOAJ) Emerging Sources Citation Index (Clarivate Analytics) INSPEC (IET) Web of Science (Clarivate Analytics).
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