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Highly Crystalline Graphene Fibers with Superior Strength and Conductivities by Plasticization Spinning
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2020-09-20 , DOI: 10.1002/adfm.202006584
Peng Li 1 , Yingjun Liu 1 , Shaoyi Shi 2 , Zhen Xu 1 , Weigang Ma 2 , Ziqiu Wang 1 , Senping Liu 1 , Chao Gao 1
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2020-09-20 , DOI: 10.1002/adfm.202006584
Peng Li 1 , Yingjun Liu 1 , Shaoyi Shi 2 , Zhen Xu 1 , Weigang Ma 2 , Ziqiu Wang 1 , Senping Liu 1 , Chao Gao 1
Affiliation
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Graphene fiber (GF), a macroscopic one‐dimensional assembly of individual graphene sheets, promises both extraordinary mechanical performance and superior multifunctionality. However, the properties of graphene fiber are still limited due to the unfavorable crystalline structures, especially induced by wrinkled conformations of graphene. A plasticization spinning strategy is presented to achieve GF with both high mechanical strength and electrical/thermal conductivity. Adjusting the interlayer space from 1.2 to 1.8 nm by intercalating proper plasticizers to adjacent graphene oxide sheets enables graphene oxide fibers to achieve a 580% enhanced deformable plasticity. Such a plasticization spinning flattens random graphene wrinkles, and regulates sheets with high order and stacking density, thereby forming large crystallite domains. The GF exhibits all around record performance including mechanical strength (3.4 GPa), electrical conductivity (1.19 × 106 S m−1), and thermal conductivity (1480 W m−1 K−1). The optimally crystalline GF with the integration of benchmark overall properties and scalable fabrication is likely to be attractive and competitive in future industrial applications.
中文翻译：
增塑纺丝具有高强度和导电性的高结晶石墨烯纤维
石墨烯纤维（GF）是单个石墨烯片的宏观一维组件，具有出色的机械性能和卓越的多功能性。然而，由于不利的晶体结构，特别是由石墨烯的起皱构象引起的，石墨烯纤维的性能仍然受到限制。提出了一种增塑纺丝策略，以实现具有高机械强度和电/热导率的GF。通过将合适的增塑剂插入相邻的氧化石墨烯片中，将层间间距从1.2调整为1.8 nm，可使氧化石墨烯纤维获得580％的可变形塑性。这种增塑纺丝使石墨烯的无规皱纹变平，并以高有序性和堆积密度调节片材，从而形成大的微晶畴。6 S m -1）和热导率（1480 W m -1 K -1）。具有基准总体性能和可扩展制造能力的最佳结晶GF在未来的工业应用中可能具有吸引力和竞争力。
更新日期：2020-09-20
中文翻译：
增塑纺丝具有高强度和导电性的高结晶石墨烯纤维
石墨烯纤维（GF）是单个石墨烯片的宏观一维组件，具有出色的机械性能和卓越的多功能性。然而，由于不利的晶体结构，特别是由石墨烯的起皱构象引起的，石墨烯纤维的性能仍然受到限制。提出了一种增塑纺丝策略，以实现具有高机械强度和电/热导率的GF。通过将合适的增塑剂插入相邻的氧化石墨烯片中，将层间间距从1.2调整为1.8 nm，可使氧化石墨烯纤维获得580％的可变形塑性。这种增塑纺丝使石墨烯的无规皱纹变平，并以高有序性和堆积密度调节片材，从而形成大的微晶畴。6 S m -1）和热导率（1480 W m -1 K -1）。具有基准总体性能和可扩展制造能力的最佳结晶GF在未来的工业应用中可能具有吸引力和竞争力。
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