title: Highly Stretchable and Conductive Silver Nanoparticle Embedded Graphene Flake Electrode Prepared by In situ Dual Reduction Reaction.
abstract: The emergence of stretchable devices that combine with conductive properties offers new exciting opportunities for wearable applications. Here, a novel, convenient and inexpensive solution process was demonstrated to prepare in situ silver (Ag) or platinum (Pt) nanoparticles (NPs)-embedded rGO hybrid materials using formic acid duality in the presence of AgNO3 or H2PtCl6 at low temperature. The reduction duality of the formic acid can convert graphene oxide (GO) to rGO and simultaneously deposit the positively charged metal ion to metal NP on rGO while the formic acid itself is converted to a CO2 evolving gas that is eco-friendly. The AgNP-embedded rGO hybrid electrode on an elastomeric substrate exhibited superior stretchable properties including a maximum conductivity of 3012 S cm(-1) (at 0 % strain) and 322.8 S cm(-1) (at 35 % strain). Its fabrication process using a printing method is scalable. Surprisingly, the electrode can survive even in continuous stretching cycles.
authors.affiliation: Center for Integrated Nanostructure Physics, Institute for Basic Science (IBS), Sungkyunkwan University, Suwon 440-746. Korea.|Samsung-SKKU Graphene Center (SSGC), Sungkyunkwan University, 2066 Seoburo, Jangan-Gu, Suwon, Gyeonggi-Do 440-746, Republic of Korea.
authors.forename: Yeoheung
authors.initials: Y
authors.lastname: Yoon
authors.affiliation: Department of Chemistry, Department of Energy Science, SKKU Advanced Institute of Nano Technology (SAINT), Sungkyunkwan University, Suwon 440-746. Korea.
authors.forename: Khokan
authors.initials: K
authors.lastname: Samanta
authors.affiliation: Department of Chemistry, Department of Energy Science, SKKU Advanced Institute of Nano Technology (SAINT), Sungkyunkwan University, Suwon 440-746. Korea.
authors.forename: Hanleem
authors.initials: H
authors.lastname: Lee
authors.affiliation: Department of Chemistry, Department of Energy Science, SKKU Advanced Institute of Nano Technology (SAINT), Sungkyunkwan University, Suwon 440-746. Korea.
authors.forename: Keunsik
authors.initials: K
authors.lastname: Lee
authors.affiliation: Department of Chemistry, Department of Energy Science, SKKU Advanced Institute of Nano Technology (SAINT), Sungkyunkwan University, Suwon 440-746. Korea.
authors.forename: Anand P
authors.initials: AP
authors.lastname: Tiwari
authors.affiliation: Department of Chemistry, Department of Energy Science, SKKU Advanced Institute of Nano Technology (SAINT), Sungkyunkwan University, Suwon 440-746. Korea.
authors.forename: JiHun
authors.initials: J
authors.lastname: Lee
authors.affiliation: Department of Chemistry, Department of Energy Science, SKKU Advanced Institute of Nano Technology (SAINT), Sungkyunkwan University, Suwon 440-746. Korea.
authors.forename: Junghee
authors.initials: J
authors.lastname: Yang
authors.affiliation: Center for Integrated Nanostructure Physics, Institute for Basic Science (IBS), Sungkyunkwan University, Suwon 440-746. Korea.|Department of Chemistry, Department of Energy Science, SKKU Advanced Institute of Nano Technology (SAINT), Sungkyunkwan University, Suwon 440-746. Korea.|Samsung-SKKU Graphene Center (SSGC), Sungkyunkwan University, 2066 Seoburo, Jangan-Gu, Suwon, Gyeonggi-Do 440-746, Republic of Korea.
authors.forename: Hyoyoung
authors.initials: H
authors.lastname: Lee