Ultrathin, Washable, and Large‐Area Graphene Papers for Personal Thermal Management

• DOI: 10.1002/smll.201702645
• Publication Date: 2017-09-29T17:14:38Z
• Authors: Yang Guo; Chaochao Dun; Junwei Xu; Jiuke Mu; Peiyun Li; Liwen Gu; Chengyi Hou; Corey A. Hewitt; Qinghong Zhang; Yaogang Li; David L. Carroll; Hongzhi Wang
• Keywords: Wearable Technology; Joule (programming language)

Abstract Freestanding, flexible/foldable, and wearable bifuctional ultrathin graphene paper for heating cooling is fabricated as an active material in personal thermal management (PTM). The promising electrical conductivity grants the superior Joule extra warmth of 42 °C using a low supply voltage around 3.2 V. Besides, based on its high out‐of‐plane conductivity, provides passive via transmission from human body to environment within 7 s. effect compared with that normal cotton fiber, this advantage will become more prominent increased thickness difference. present bifunctional possesses durability against bending cycles over 500 times wash time 1500 min, suggesting great potential PTM.