Tailoring Core-Spun Yarns of Biomass Nanofibrils Assembled via Wet Twisting for Energy Storage and Electrochromism

IF 21.3 1区工程技术 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Advanced Fiber Materials Pub Date : 2025-06-18 DOI:10.1007/s42765-025-00544-7

Huimin Zhou, Hongyou Chen, Hui Cao, Liangkui Peng, Yingqi Liu, XiuxiuZhang, Wenli Wang, Lu Cheng, Qufu Wei, Xin Xia

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Abstract

To enhance the bonding strength between the active material and the core yarn current collector through nano-entanglement, bacterial cellulose/carbon nanotube (BC/CNT) nanofiber yarns were developed using in situ cultivation and wet twisting. This method utilizes the large specific surface area and abundant active functional groups of BC-based nanofibers. Subsequently, V₂O₅/BC/CNT composite yarn electrodes were fabricated, exhibiting a core-sheath structure with excellent conformal characteristics. The influence of ultrasound duration on the conductivity and electrochromic performance of composite yarns was investigated. The initial discharge-specific capacity was recorded as 105.3 mAh/g, with a capacity retention rate of 60.2% after 100 cycles. The composite yarn exhibited 100 reversible transitions between yellow and blue, with reduction and oxidation response times of 2.35 s and 3.3 s, respectively. The modulation amplitude at 532 nm during the initial cycle was 20.31%, and after 100 cycles, the modulation amplitude retention rate remained at 68%.

Graphical Abstract

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生物质纳米原纤维湿捻组合成芯纱，用于储能和电致变色

为提高活性材料与集流芯纱之间的纳米缠结强度，采用原位培养和湿捻法制备了细菌纤维素/碳纳米管（BC/CNT）纳米纤维纱线。该方法利用了bc基纳米纤维的大比表面积和丰富的活性官能团。随后，制备了V2O5/BC/CNT复合纱线电极，其芯鞘结构具有优异的共形特性。研究了超声时间对复合纱线电导率和电致变色性能的影响。初始放电比容量为105.3 mAh/g，循环100次后容量保持率为60.2%。复合纱线在黄色和蓝色之间发生了100次可逆转变，还原和氧化反应时间分别为2.35 s和3.3 s。初始周期532 nm处的调制幅值为20.31%，循环100次后，调制幅值保持率为68%。图形抽象

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来源期刊

Advanced Fiber Materials Multiple-

CiteScore

18.70

自引率

11.20%

发文量

109

期刊介绍： Advanced Fiber Materials is a hybrid, peer-reviewed, international and interdisciplinary research journal which aims to publish the most important papers in fibers and fiber-related devices as well as their applications.Indexed by SCIE, EI, Scopus et al. Publishing on fiber or fiber-related materials, technology, engineering and application.