All-printed magnetically self-healing electrochemical devices

被引:95
|
作者
Bandodkar, Amay J. [1 ]
Lopez, Cristian S. [1 ]
Mohan, Allibai Mohanan Vinu [1 ]
Yin, Lu [1 ]
Kumar, Rajan [1 ]
Wang, Joseph [1 ]
机构
[1] Univ Calif San Diego, Dept NanoEngn, La Jolla, CA 92093 USA
来源
SCIENCE ADVANCES | 2016年 / 2卷 / 11期
关键词
COMPOSITE; ELECTRODE; GRAPHENE; POLYMER; SENSOR; REGENERATION; BATTERIES; HYDROGEL; SYSTEM; HEALTH;
D O I
10.1126/sciadv.1601465
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The present work demonstrates the synthesis and application of permanentmagnetic Nd2Fe14B microparticle (NMP)-loaded graphitic inks for realizing rapidly self-healing inexpensive printed electrochemical devices. The incorporation of NMPs into the printable ink imparts impressive self-healing ability to the printed conducting trace, with rapid (similar to 50 ms) recovery of repeated large (3mm) damages at the same or different locations without any user intervention or external trigger. The permanent and surrounding-insensitive magnetic properties of the NMPs thus result in long-lasting ability to repair extreme levels of damage, independent of ambient conditions. This remarkable self-healing capability has not been reported for existing man-made self-healing systems and offers distinct advantages over common capsule and intrinsically self-healing systems. The printed system has been characterized by leveraging crystallographic, magnetic hysteresis, microscopic imaging, electrical conductivity, and electrochemical techniques. The real-life applicability of the new self-healing concept is demonstrated for the autonomous repair of all-printed batteries, electrochemical sensors, and wearable textile-based electrical circuits, indicating considerable promise for widespread practical applications and long-lasting printed electronic devices.
引用
收藏
页数:10
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