Energy Harvesting Floor from Commercial Cellulosic Materials for a Self-Powered Wireless Transmission Sensor System
Energy Harvesting Floor from Commercial Cellulosic Materials for a Self-Powered Wireless Transmission Sensor System
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DOI：
10.1021/acsami.0c20703
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发表时间：
2021-01-20
影响因子：
9.5
通讯作者：
Wang, Xudong
中科院分区：
文献类型：
--
作者：
Gu, Long;German, Lazarus;Wang, Xudong
基于纤维素的材料在开发低成本、生态友好的技术方面获得了越来越多的关注，最近，作为摩擦电纳米发电机（TENG）中的功能材料。然而，纤维素基TENG的低输出性能严重限制了其在新兴智能建筑和智能城市应用中的多功能性和应用。在这里，我们报告了商业纤维素材料为基础的能量收集地板（CEHF）的高输出性能。得益于称重纸和硝化纤维纸之间摩擦电性能的显著差异，通过新开发的机械剥离方法实现的高表面粗糙度，以及通过多层设备结构实现的大的总接触面积，CEHF（25 cm X 15 cm X 1.2 cm）具有出色的输出性能，最大输出电压、电流和功率峰值分别为360 V、250 mu A和5 mW，分别它可以直接安装或与常规地板产品集成，有效地将人体运动转化为电力，并表现出良好的耐用性和稳定性。此外，可以产生1：1的脚步与信号（发送和接收）比的无线传输传感系统首次由完全基于纤维素材料的TENG瞬时供电。这项工作提供了一个可行的和有效的方法，利用商业纤维素材料，构建自供电的无线传输系统的实时传感应用。
Cellulose-based materials have gained increasing attention for the development of low-cost, eco-friendly technologies, and more recently, as functional materials in triboelectric nanogenerators (TENGs). However, the low output performance of cellulose-based TENGs severely restricts their versatility and employment in emerging smart building and smart city applications. Here, we report a high output performance of a commercial cellulosic material-based energy harvesting floor (CEHF). Benefiting from the significant difference in the triboelectric properties between weighing and nitrocellulose papers, high surface roughness achieved by a newly developed mechanical exfoliation method, and large overall contact area via a multilayered device structure, the CEHF (25 cm X 15 cm X 1.2 cm) exhibits excellent output performance with a maximum output voltage, current, and power peak values of 360 V, 250 mu A, and 5 mW, respectively. It can be directly installed or integrated with regular flooring products to effectively convert human body movements into electricity and shows good durability and stability. Moreover, a wireless transmission sensing system that can produce a 1:1 footstep-to-signal (transmitted and received) ratio is instantaneously powered by a TENG based entirely on cellulosic materials for the first time. This work provides a feasible and effective way to utilize commercial cellulosic materials to construct self-powered wireless transmission systems for real-time sensing applications.