期刊
ACS APPLIED MATERIALS & INTERFACES
卷 9, 期 8, 页码 6655-6660出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b15601
关键词
polydopamine; thermoelectric; neutron total scattering; Raman spectroscopy; thermal conductivity; seebeck coefficient
资金
- Temple University
- Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy
- Office of Naval Research [N0014-12-1-0777]
- College of Engineering
- Center for the Computational Design of Functional Layered Materials, an Energy Frontier Research Center - U.S. Department of Energy, Office of Science, Basic Energy Sciences [DE-SC0012575]
Carbonization of nature-inspired polydopamine can yield thin films with high electrical conductivity. Understanding of the structure of carbonized PDA (cPDA) is therefore highly desired. In this study, neutron diffraction, Raman spectroscopy, and other techniques indicate that cPDA samples are mainly amorphous with some short-range ordering and graphite like structure that emerges with increasing heat treatment temperature. The electrical conductivity and the Seebeck coefficient show different trends with heat treatment temperature, while the thermal conductivity remains insensitive. The largest room-temperature ZT of 2 X 10(-4) was obtained on samples heat treated at 800 degrees C, which is higher than that of reduced graphene oxide.
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