High-Performance Triboelectric Nanogenerators Based on Solid Polymer Electrolytes with Asymmetric Pairing of Ions

Hanjun Ryu, Ju Hyuck Lee, Tae Yun Kim, Usman Khan, Jeong Hwan Lee, Sung Soo Kwak, Hong Joon Yoon, Sang Woo Kim

Research output: Contribution to journalArticlepeer-review


In general, various kinds of surface modifications are utilized to enhance the power output performance of triboelectric nanogenerators (TENGs), but they typically have limited stability. Here, a new strategy of adding electrolytes with asymmetric ion pairing to polymer friction layers of TENGs is introduced in order to enhance their triboelectric property. Indeed, Kelvin probe force microscopy (KPFM) measurements show that an addition of phosphoric acid (H3PO4), an electrolyte with more cations than anions, to polyvinyl alcohol (PVA) can make it one of the most negative triboelectric materials; whereas, an addition of calcium chloride (CaCl2), an electrolyte with more anions than cations, to PVA can make it one of the most positive triboelectric materials. Furthermore, the TENGs based on such solid polymer electrolytes (SPEs) produce significantly higher power output than typical metal-polymer TENGs. Due to these unique features, SPEs are a promising triboelectric material for realizing high-performance TENGs for self-powered small electronics.

Original languageEnglish
Article number1700289
JournalAdvanced Energy Materials
Issue number17
Publication statusPublished - 2017 Sept 6

Bibliographical note

Funding Information:
H.R. and J.-H.L. contributed equally to this work. This work was financially supported by Basic Science Research Program (2015R1A2A1A05001851) through the National Research Foundation (NRF) of Korea Grant funded by the Ministry of Science, ICT & Future Planning and the Industrial Strategic Technology Development Program (10052668, Development of wearable self-powered energy source and low-power wireless communication system for a pacemaker) funded by the Ministry of Trade, industry & Energy (MI, Korea).

Publisher Copyright:
© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)


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