Collaborative Research: Thermal Drawing of Composite Fibers for Wearable Energy Storage Textiles

合作研究：可穿戴储能纺织品复合纤维的热拉伸

• 批准号: 2217172
• 负责人: Caiwei Shen
• 金额: $ 25.13万
• 依托单位: University of Massachusetts, Dartmouth
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-09-01 至 2025-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2217172&HistoricalAwards=false
• 关键词: Collaborative; Research; Thermal; Drawing; Composite

This grant supports research that will advance the fundamental understanding of the manufacturing process of multifunctional composite fibers through thermal drawing to enable energy storage textiles for next-generation wearable electronics and smart textiles. Thermal drawing, a manufacturing process that pulls fibers out of melts, is the most commonly used fiber production method in the textile industry. Its capability of manufacturing multifunctional composite fibers has been limited due to its susceptibility to melt fracture. This research will fill the knowledge gap on how the composition and nanostructures of the composites affect the failure mechanisms during the thermal drawing process. With the new fundamental knowledge, composites containing nanostructured carbon electrodes as the filler and polymer electrolytes as the matrix will be designed and processed into wearable fibers. Such composite fibers can be woven into energy storage textiles to serve as the power source for wearable electronics and smart textiles in many consumer, medical, and military applications. This research will promote US manufacturing science and technology and help preserve US technological and economic dominance in wearable and smart electronics. The research tasks will be used to train highly skilled engineers and scientists in STEM fields for the US manufacturing workforce. The outreach activities associated with this research will promote the early exposure of K-12 students, especially those from women and underrepresented minority groups, to STEM.While thermal drawing is a versatile tool capable of scalable manufacturing of multimaterial multifunctional fibers, it has yet to achieve its full potential in manufacturing composite fibers due to the limited understanding of its failure mechanism. This research designs and experiments on new electrode-electrolyte composites with one-dimensional carbon nanomaterials and solid polymer electrolytes and seeks to understand the fundamental failure mechanisms during the thermal drawing of such composites. The failure mechanism will be elucidated using transport phenomena modeling and in-process rheological measurements. As a result, the research will elucidate 1) the currently unknown structural effects of one-dimensional nanofillers on the rate-limiting failure mechanisms during the thermal drawing processing of composite fibers, and 2) the widely observed but unexplained process effect of thermal drawing on the alignment and dispersion of the nanofillers in the produced composite textile fibers. This better understanding of the failure, alignment, and dispersion mechanisms will provide a new solution to produce supercapacitor-type energy storage textiles and enable the continuous manufacturing of new functional materials and devices using thermal drawing from a preform.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该资助支持的研究将通过热拉伸来推进对多功能复合纤维制造过程的基本理解，从而为下一代可穿戴电子产品和智能纺织品提供储能纺织品。热拉伸是一种将纤维从熔体中拉出的制造工艺，是纺织工业中最常用的纤维生产方法。由于其对熔体破裂的敏感性，其制造多功能复合纤维的能力受到限制。该研究将填补复合材料的组成和纳米结构如何影响热拉伸过程中的失效机制的知识空白。利用这些新的基础知识，可以设计出以纳米碳电极为填料，以聚合物电解质为基体的复合材料，并将其加工成耐磨纤维。这种复合纤维可以编织成储能纺织品，作为许多消费者、医疗和军事应用中可穿戴电子产品和智能纺织品的电源。这项研究将促进美国制造业的科学和技术，并有助于保持美国在可穿戴和智能电子产品领域的技术和经济优势。这些研究任务将用于为美国制造业劳动力培训STEM领域的高技能工程师和科学家。与这项研究相关的推广活动将促进K-12学生，特别是那些来自女性和代表性不足的少数群体的学生，早期接触STEM。虽然热拉伸是一种多功能的工具，能够可扩展地制造多材料多功能纤维，但由于对其失效机制的了解有限，它在制造复合纤维方面尚未充分发挥其潜力。本研究设计和实验的新型电极电解质复合材料与一维碳纳米材料和固体聚合物电解质，并试图了解这种复合材料的热拉伸过程中的基本故障机制。故障机制将阐明使用传输现象建模和过程中的流变测量。因此，该研究将阐明1）目前未知的结构影响的一维纳米填料对复合纤维的热拉伸加工过程中的限速故障机制，和2）广泛观察到的，但无法解释的热拉伸工艺效果的纳米填料在生产的复合纺织纤维的排列和分散。对失效、排列和分散机制的更好理解将为生产超级电容器型储能纺织品提供一种新的解决方案，并使使用热拉伸从预成型件连续制造新的功能材料和设备成为可能。该奖项反映了NSF的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

How Practical Are Fiber Supercapacitors for Wearable Energy Storage Applications?

• DOI: 10.3390/mi14061249
• 发表时间: 2023-06-14
• 期刊: Micromachines
• 影响因子: 3.4

Molecular insights into the electric double-layer structure at a polymer electrolyte-electrode interface

• DOI: 10.1016/j.electacta.2023.142131
• 发表时间: 2023-03-04
• 期刊: ELECTROCHIMICA ACTA
• 影响因子: 6.6
• 作者: Asha, Aysha Siddika;Iroegbu, Justice Nkemakolam;Shen, Caiwei
• 通讯作者: Shen, Caiwei