Journal
MATERIALS LETTERS
Volume 176, Issue -, Pages 165-168Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2016.04.107
Keywords
Carbon materials; Chemical vapor deposition; Nanocomposites; Electrical properties
Funding
- National Natural Science Foundation of China [51302187]
- Key Project of Tianjin Natural Science Foundation [14JCZDJC32100]
- National Training Programs of Innovation and Entrepreneurship for Undergraduates [201510065044]
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Vertical graphene (VG) was prepared on flat graphene (FG) coated pressed Ni foams by using plasma enhanced chemical vapor deposition. The VG is typical few-layer graphene and is rich in defects. The field emission performance of Ni-FG-VG hybrids with optimal morphology is found to outperform that of VG prepared on pristine Ni foams and Si wafers. It has a low turn-on electric field of 2.03 Wpm and a large maximum emission current density (J(max)) of 5.91 mA/cm(2) and also exhibits excellent field emission stability at similar to 50% and similar to 75% j(max) over a period of 30 h. (C) 2016 Elsevier B.V. All rights reserved.
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