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A New Facile Route to Flexible and Semi‐Transparent Electrodes Based on Water Exfoliated Graphene and their Single‐Electrode Triboelectric Nanogenerator
Author(s) -
Shin DongWook,
Barnes Matthew D.,
Walsh Kieran,
Dimov Dimitar,
Tian Peng,
Neves Ana I. S.,
Wright C. David,
Yu Seong Man,
Yoo JiBeom,
Russo Saverio,
Craciun Monica F.
Publication year - 2018
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201802953
Subject(s) - triboelectric effect , nanogenerator , graphene , materials science , nanotechnology , flexible electronics , electronics , wearable technology , transfer printing , fabrication , electrode , stretchable electronics , substrate (aquarium) , energy harvesting , wearable computer , computer science , electrical engineering , energy (signal processing) , composite material , alternative medicine , mathematics , chemistry , oceanography , pathology , piezoelectricity , engineering , embedded system , medicine , statistics , geology
Wearable technologies are driving current research efforts to self‐powered electronics, for which novel high‐performance materials such as graphene and low‐cost fabrication processes are highly sought.The integration of high‐quality graphene films obtained from scalable water processing approaches in emerging applications for flexible and wearable electronics is demonstrated. A novel method for the assembly of shear exfoliated graphene in water, comprising a direct transfer process assisted by evaporation of isopropyl alcohol is developed. It is shown that graphene films can be easily transferred to any target substrate such as paper, flexible polymeric sheets and fibers, glass, and Si substrates. By combining graphene as the electrode and poly(dimethylsiloxane) as the active layer, a flexible and semi‐transparent triboelectric nanogenerator (TENG) is demonstrated for harvesting energy. The results constitute a new step toward the realization of energy harvesting devices that could be integrated with a wide range of wearable and flexible technologies, and opens new possibilities for the use of TENGs in many applications such as electronic skin and wearable electronics.