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超可压缩和机械稳定的减少氧化石墨烯气凝用于可穿戴功能设备

Keerti Rathi¹, Duckjong Kim¹

¹School of Mechanical and Aerospace Engineering, Gyeongsang National University, Jinju, South Korea.

Science and technology of advanced materials

|June 8, 2023

概括

研究人员为可穿戴设备开发了机械稳定的减少氧化石墨烯气凝. 氨酸水合物创造了一个波形结构,具有出色的耐疲劳性,在1000次压缩后保持98%的完整性.

科学领域:

材料科学材料科学材料科学
纳米技术纳米技术
聚合物科学聚合物科学

背景情况:

石墨烯气凝提供电导和可压缩性.
机械稳定性是可穿戴应用中石墨烯气凝的一个关键挑战.

研究的目的:

为了合成机械稳定的低氧化石墨烯氧化物气凝,具有较小的弹性模量.
为了优化微观结构和表面化学,以提高稳定性和压力阻抗性质.

主要方法:

合成了使用L-亚酸 (rGO-LAA),尿素 (rGO-尿素) 和酸 (rGO-HH) 作为降解剂的减少氧化石墨烯气凝.
研究了降解剂对微观结构,物理交联和离子相互作用的影响.
通过循环压缩试验评估机械稳定性,并评估压力阻抗性质.

主要成果:

氨酸水合物 (rGO-HH) 增强了物理和离子相互作用,创造了一种具有优越疲劳抵抗力的波状微结构.
在1000个压缩周期 (50%的应变) 后,优化的rGO-HH气凝保持了98.7%的应力和98.1%的高度.
基于rGO-HH的压力传感器显示出高灵敏度 (~5.7 kPa-1) 和良好的可重复性.

结论:

优化减少剂的选择对于制造机械坚固的石墨烯气凝至关重要.
开发的rGO-HH气凝是一种有前途的超压缩性和机械稳定的可穿戴设备的压缩材料.

关键词:

石墨烯气凝是一种气凝.石墨烯氧化物还原法机械稳定性机械稳定性压电阻材料是压电阻材料.超压缩性超压缩性

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