Structure Evolution and Thermoelectric Properties of Carbonized Polydopamine Thin Films

Haoqi Li; Yaroslav V. Aulin; Laszlo Frazer; Eric Borguet; Rohit Kakodkar; Joseph Feser; Yan Chen; Ke An; Dmitriy A. Dikin; Fei Ren

doi:10.1021/acsami.6b15601

Structure Evolution and Thermoelectric Properties of Carbonized Polydopamine Thin Films

Haoqi Li, Yaroslav V. Aulin, Laszlo Frazer, Eric Borguet, Rohit Kakodkar, Joseph Feser, Yan Chen, Ke An, Dmitriy A. Dikin, Fei Ren

Research output: Contribution to journal › Article › Research › peer-review

89 Citations (Scopus)

Abstract

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 × 10^-4 was obtained on samples heat-treated at 800 °C, which is higher than that of reduced graphene oxide.

Original language	English
Pages (from-to)	6655-6660
Number of pages	6
Journal	ACS Applied Materials & Interfaces
Volume	9
Issue number	8
DOIs	https://doi.org/10.1021/acsami.6b15601
Publication status	Published - 1 Mar 2017
Externally published	Yes

Keywords

polydopamine
thermoelectric
neutron total scattering
Raman spectroscopy
thermal conductivity
seebeck coefficient

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10.1021/acsami.6b15601

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abstract = "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 × 10-4 was obtained on samples heat-treated at 800 °C, which is higher than that of reduced graphene oxide.",

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T1 - Structure Evolution and Thermoelectric Properties of Carbonized Polydopamine Thin Films

AU - Li, Haoqi

AU - Aulin, Yaroslav V.

AU - Frazer, Laszlo

AU - Borguet, Eric

AU - Kakodkar, Rohit

AU - Feser, Joseph

AU - Chen, Yan

AU - An, Ke

AU - Dikin, Dmitriy A.

AU - Ren, Fei

PY - 2017/3/1

Y1 - 2017/3/1

N2 - 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 × 10-4 was obtained on samples heat-treated at 800 °C, which is higher than that of reduced graphene oxide.

AB - 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 × 10-4 was obtained on samples heat-treated at 800 °C, which is higher than that of reduced graphene oxide.

KW - polydopamine

KW - thermoelectric

KW - neutron total scattering

KW - Raman spectroscopy

KW - thermal conductivity

KW - seebeck coefficient

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JO - ACS Applied Materials & Interfaces

JF - ACS Applied Materials & Interfaces

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Structure Evolution and Thermoelectric Properties of Carbonized Polydopamine Thin Films

Abstract

Keywords

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