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Sustainable and Biodegradable Wood Sponge Piezoelectric Nanogenerator for Sensing and Energy Harvesting Applications.
ACS Nano ( IF 15.8 ) Pub Date : 2020-09-16 , DOI: 10.1021/acsnano.0c05493 Jianguo Sun 1, 2 , Hengyu Guo 3 , Javier Ribera 4 , Changsheng Wu 3 , Kunkun Tu 1, 2 , Marco Binelli 5 , Guido Panzarasa 1 , Francis W M R Schwarze 4 , Zhong Lin Wang 3 , Ingo Burgert 1, 2
ACS Nano ( IF 15.8 ) Pub Date : 2020-09-16 , DOI: 10.1021/acsnano.0c05493 Jianguo Sun 1, 2 , Hengyu Guo 3 , Javier Ribera 4 , Changsheng Wu 3 , Kunkun Tu 1, 2 , Marco Binelli 5 , Guido Panzarasa 1 , Francis W M R Schwarze 4 , Zhong Lin Wang 3 , Ingo Burgert 1, 2
Affiliation
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Developing low-cost and biodegradable piezoelectric nanogenerators is of great importance for a variety of applications, from harvesting low-grade mechanical energy to wearable sensors. Many of the most widely used piezoelectric materials, including lead zirconate titanate (PZT), suffer from serious drawbacks such as complicated synthesis, poor mechanical properties (e.g., brittleness), and toxic composition, limiting their development for biomedical applications and posing environmental problems for their disposal. Here, we report a low-cost, biodegradable, biocompatible, and highly compressible piezoelectric nanogenerator based on a wood sponge obtained with a simple delignification process. Thanks to the enhanced compressibility of the wood sponge, our wood nanogenerator (15 × 15 × 14 mm3, longitudinal × radial × tangential) can generate an output voltage of up to 0.69 V, 85 times higher than that generated by native (untreated) wood, and it shows stable performance under repeated cyclic compression (≥600 cycles). Our approach suggests the importance of increased compressibility of bulk materials for improving their piezoelectric output. We demonstrate the versatility of our nanogenerator by showing its application both as a wearable movement monitoring system (made with a single wood sponge) and as a large-scale prototype with increased output (made with 30 wood sponges) able to power simple electronic devices (a LED light, a LCD screen). Moreover, we demonstrate the biodegradability of our wood sponge piezoelectric nanogenerator by studying its decomposition with cellulose-degrading fungi. Our results showcase the potential application of a wood sponge as a sustainable energy source, as a wearable device for monitoring human motions, and its contribution to environmental sustainability by electronic waste reduction.
中文翻译：
可持续和可生物降解的木质海绵压电纳米发生器，用于传感和能量收集应用。
开发低成本和可生物降解的压电纳米发电机对于从收获低级机械能到可穿戴传感器的各种应用都至关重要。许多最广泛使用的压电材料，包括锆酸钛酸铅（PZT），都具有严重的缺陷，例如复杂的合成，较差的机械性能（例如脆性）和有毒成分，限制了其在生物医学应用中的发展，并给环境带来了问题。他们的处置。在这里，我们报告了一种基于木质海绵的低成本，可生物降解，生物相容性和高可压缩性的压电纳米发电机，该木材通过简单的脱木质素工艺获得。得益于木质海绵的增强可压缩性，我们的木质纳米发生器（15×15×14 mm 3（纵向×径向×切向）可以产生高达0.69 V的输出电压，是天然（未经处理）木材所产生电压的85倍，并且在反复循环压缩（≥600次循环）下表现出稳定的性能。我们的方法表明增加散装材料可压缩性对于改善压电输出的重要性。我们通过展示其作为可穿戴运动监测系统（由单个木质海绵制成）和大型原型机（具有增加的输出功率（由30个木质海绵制成））的应用能力来证明我们的纳米发电机的多功能性，从而能够为简单的电子设备供电（ LED灯，LCD屏幕）。此外，我们通过研究其与纤维素降解真菌的分解来证明木海绵压电纳米发生器的生物降解性。
更新日期：2020-11-25
中文翻译：
可持续和可生物降解的木质海绵压电纳米发生器，用于传感和能量收集应用。
开发低成本和可生物降解的压电纳米发电机对于从收获低级机械能到可穿戴传感器的各种应用都至关重要。许多最广泛使用的压电材料，包括锆酸钛酸铅（PZT），都具有严重的缺陷，例如复杂的合成，较差的机械性能（例如脆性）和有毒成分，限制了其在生物医学应用中的发展，并给环境带来了问题。他们的处置。在这里，我们报告了一种基于木质海绵的低成本，可生物降解，生物相容性和高可压缩性的压电纳米发电机，该木材通过简单的脱木质素工艺获得。得益于木质海绵的增强可压缩性，我们的木质纳米发生器（15×15×14 mm 3（纵向×径向×切向）可以产生高达0.69 V的输出电压，是天然（未经处理）木材所产生电压的85倍，并且在反复循环压缩（≥600次循环）下表现出稳定的性能。我们的方法表明增加散装材料可压缩性对于改善压电输出的重要性。我们通过展示其作为可穿戴运动监测系统（由单个木质海绵制成）和大型原型机（具有增加的输出功率（由30个木质海绵制成））的应用能力来证明我们的纳米发电机的多功能性，从而能够为简单的电子设备供电（ LED灯，LCD屏幕）。此外，我们通过研究其与纤维素降解真菌的分解来证明木海绵压电纳米发生器的生物降解性。
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