High-performance triboelectric nanogenerators with artificially well-tailored interlocked interfaces

Hak Jong Choi, Jeong Hwan Lee, Junho Jun, Tae Yun Kim, Sang Woo Kim, Heon Lee

Research output: Contribution to journalArticlepeer-review

61 Citations (Scopus)


We report a facile and cost-effective route for fabricating highly efficient triboelectric energy harvesters via formation of artificially well-tailored interlocked interface with a nanostructured Ni electrode and polydimethylsiloxane (PDMS). The interlocked interface formed between the nano-pillar Ni electrode and nano-pillar PDMS composite thin film effectively enhanced the triboelectricity of a triboelectric nanogenerator (TENG) by increasing the surface contact area and contact time, related to the frictional forces. The output power of four different kinds of TENGs was evaluated to confirm the effect of the surface morphology, especially the interlocked interface. A dramatic enhancement of the output voltage (~100 V) was observed with a current of up to ~23 μA. The effectiveness of the interlocked TENG (i-TENG) was also demonstrated by the greater efficiency for charging a capacitor compared with the flat-to-flat contact TENG (flat TENG).

Original languageEnglish
Pages (from-to)595-601
Number of pages7
JournalNano Energy
Publication statusPublished - 2016 Sept 1

Bibliographical note

Funding Information:
H.-J. Choi and J.H. Lee contributed equally to this work. This research was supported by Nanomaterial Technology Development Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology ( 2012M3A7B4035323 ) and this work was also supported by the Center for Integrated Smart Sensors funded by the Ministry of Science, ICT & Future Planning as Global Frontier Project ( CISS-2011-0031870 ).

Publisher Copyright:
© 2016 Elsevier Ltd


  • High performance
  • Interlocked interface
  • Nanogenerator
  • Nanoimprinting
  • Nanostructure
  • Triboelectrification

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • General Materials Science
  • Electrical and Electronic Engineering


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