动态金属协调粘合剂和自愈抗水凝用于应变传感,灵活超级电容器和EMI屏蔽应用
Ashis Ghosh1, Sudhir Kumar1, Prem Pal Singh1
1Materials Science Centre, Indian Institute of Technology Kharagpur, Kharagpur 721302, India.
ACS omega
|August 5, 2024
概括
这项研究介绍了一种新的自我愈合的水凝,具有动态的金属结合体键,用于先进的应用. 该材料表现出特殊的伸展性,粘附性和导电性,使其能够用于灵活的电子和能量存储.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 纳米技术纳米技术
背景情况:
- 动态金属协调水凝具有自我愈合和粘合性.
- 现有的水凝往往缺乏机械强度或用于先进应用的多功能性.
- 金属-体动态键是可逆网络形成和自我修复的关键.
研究的目的:
- 开发一种机械坚固,高度伸展,自我愈合和粘合的水凝.
- 探索水凝在应变传感,能量储存和电磁衰减方面的潜力.
- 调查Ca2+ - 二碳酸盐交叉链在水凝性质中的作用.
主要方法:
- 将Ca2+ - 双碳酸盐动态金属 - 连接物交叉链接纳入聚合物 (?? 烯胺 - 酸) 共聚合物中.
- 结合低密度化学交叉连接来增强机械性能.
- 机械强度,伸展性,自我愈合性,导电性和粘合性的表征.
主要成果:
- 实现了高达250kPa的抗拉强度和15-16倍原始长度的伸展性.
- 证明了高断裂能量 (~1500 J m-2),良好的恢复,耐疲劳性和快速自我愈合.
- 开发了一种灵活的电阻应变传感器,用于超级电容器的固体电解质 (260 F/g) 和电磁衰减材料 (~38 dB).
结论:
- 开发的水凝表现出多功能性质,包括自我愈合,粘附和导电性.
- 二氧化+二碳酸盐交叉连接对于水凝的动态和强大的网络形成至关重要.
- 水凝是灵活电子,储能和电磁屏蔽应用的有希望的候选者.
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