DataVXACS Energy LettersPaper
journal article·2019-07-12

High-Output and Bending-Tolerant Triboelectric Nanogenerator Based on an Interlocked Array of Surface-Functionalized Indium Tin Oxide Nanohelixes

Sungwoo Chun, Il Yong Choi, Wonkyeong Son, Jaimyun Jung, Sangmin Lee, Hyoung Seop Kim, Changhyun Pang, Wanjun Park, Jong Kyu Kim

ACS Energy Letters· Volume 4· Issue 7
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Source abstract

Abstract

We present a high-performance flexible triboelectric nanogenerator (TENG) based on an interlocked array of surface-functionalized indium tin oxide (ITO) nanohelix (NH) structures. The structural properties of ITO NHs, including a high nanoscale roughness and unique spring-like geometry, provide a large surface area for an effective friction, enhanced tolerance to bending strain, and operational reliability. The TENG device with surface-functionalized ITO NHs exhibits a significantly enhanced (over 340 times) electrical output power compared to the TENG based on plane ITO. This is attributed to the effective generation of static charges on the large functionalized surface area as well as the efficient charge induction in the ITO electrodes with a unique geometry. We believe that our approach simultaneously overcomes the limitations of available dielectric materials and their low conductivity and reliability and thus can pave the way for the development of portable and wearable self-powered electronic devices.
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Research context

Nanomaterials

OpenAlex topics: Advanced Sensor and Energy Harvesting Materials · Conducting polymers and applications · Tactile and Sensory Interactions

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Electronics and Computer Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea

Department of SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon 16419, Republic of Korea

School of Chemical Engineering, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon 16419, Republic of Korea

Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang 37673, Republic of Korea

Funding

National Research Foundation of Korea

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