Phase-Separation-Induced PVDF/Graphene Coating on Fabrics toward Flexible Piezoelectric Sensors
Phase-Separation-Induced PVDF/Graphene Coating on Fabrics toward Flexible Piezoelectric Sensors
复制标题
织物上相分离诱导的 PVDF/石墨烯涂层用于柔性压电传感器
DOI：
10.1021/acsami.8b10552
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发表时间：
2018-09-12
影响因子：
9.5
通讯作者：
Xie, Xiaoming
中科院分区：
文献类型：
--
作者：
Huang, Tao;Yang, Siwei;Xie, Xiaoming
服装集成压电传感器具有巨大的潜力，为未来的可穿戴电子产品。在本文中，我们报道了一种相分离的方法来制造柔性压电传感器的基础上，聚偏氟乙烯（PVDF）/石墨烯复合涂层的商业可用的织物（PVDF/graphene@F）。由于石墨烯和水在相分离过程中的结构诱导，PVDF链的-CH 2-和-CF2-结构单元定向排列，这是电活性相富集的关键。在优化的情况下，集成到织物基底中赋予相出PVDF/石墨烯复合涂层比其膜对应物高4倍的电压输出。基于PVDF/graphenep F的压电传感器具有34 V N-1的灵敏度，这高于许多报道。该方法具有较低的检测阈值（0.6mN），可用于语音识别和人体运动监测。这种简单有效的方法使PVDF/graphene@F具有优异的柔性，为可穿戴压电传感器的开发提供了一条有前途的路线。
Clothing-integrated piezoelectric sensors possess great potential for future wearable electronics. In this paper, we reported a phase-separation approach to fabricate flexible piezoelectric sensors based on poly(vinylidene fluoride) (PVDF)/graphene composite coating on commercially available fabrics (PVDF/graphene@F). The structural units of -CH2- and -CF2- of PVDF chains were arranged directionally due to the structural induction of graphene and water during phase separation, which is the key for electroactive phase enrichment. In optimized case, integrating into fabric substrates endows the phase-out PVDF/graphene composite coating 4 times higher voltage output than its film counterpart. Piezoelectric sensor based on PVDF/graphenep F exhibits a sensitivity of 34 V N-1, which is higher than many reports. It also shows low detecting threshold (0.6 mN), which can be applied to distinguish the voices or monitor the motion of body. This simple and effective approach toward PVDF/graphene@F with excellent flexibility provides a promising route toward the development of wearable piezoelectric sensors.