A Flexible Bilayer Actuator Based on Liquid Crystal Network and PVDF–TrFE for Low-Grade Waste Heat Harvesting

Ying Han; Chunli Jiang; Hanmei Fu; Chunhua Luo; Hechun Lin; Hui Peng

doi:10.1002/ente.202000612

A Flexible Bilayer Actuator Based on Liquid Crystal Network and PVDF–TrFE for Low-Grade Waste Heat Harvesting

Ying Han
, Chunli Jiang
, Hanmei Fu
, Chunhua Luo^*
, Hechun Lin
, Hui Peng^*

^*Corresponding author for this work

School of Physics and Electronic Science

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

4 Scopus citations

Abstract

Flexible low-grade waste heat generators are a promising device that can both recycle thermal energy and exhibit elasticity, are light weight, and have easily customized shapes. However, most thermal energy recovery technologies only work at large temperature gradients. Herein, a dynamic generator based on liquid crystal network (LCN) and poly(vinylidenedifluoride–trifluoroethylene) (PVDF–TrFE) is reported. The generator can operate in a temperature of ≈30 °C with a temperature difference of 6 K. LCN expands and shrinks in the temperature fluctuation, which is beneficial for PVDF–TrFE exposure to greater temperature changes. The device is found to exhibit a maximum output voltage of ≈4.5 mV based on pyroelectric and piezoelectric effect. This simple strategy may broaden applications of liquid crystalline actuators for harvesting low-grade waste heat.

Original language	English
Article number	2000612
Journal	Energy Technology
Volume	8
Issue number	10
DOIs	https://doi.org/10.1002/ente.202000612
State	Published - 1 Oct 2020

Keywords

liquid crystal networks
low-grade waste heat recovery
poly(vinylidenedifluoride-trifluoroethylene)
renewable energy

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1002/ente.202000612

Cite this

@article{1630502ca9c2497baa560541fc6adc0a,

title = "A Flexible Bilayer Actuator Based on Liquid Crystal Network and PVDF–TrFE for Low-Grade Waste Heat Harvesting",

abstract = "Flexible low-grade waste heat generators are a promising device that can both recycle thermal energy and exhibit elasticity, are light weight, and have easily customized shapes. However, most thermal energy recovery technologies only work at large temperature gradients. Herein, a dynamic generator based on liquid crystal network (LCN) and poly(vinylidenedifluoride–trifluoroethylene) (PVDF–TrFE) is reported. The generator can operate in a temperature of ≈30 °C with a temperature difference of 6 K. LCN expands and shrinks in the temperature fluctuation, which is beneficial for PVDF–TrFE exposure to greater temperature changes. The device is found to exhibit a maximum output voltage of ≈4.5 mV based on pyroelectric and piezoelectric effect. This simple strategy may broaden applications of liquid crystalline actuators for harvesting low-grade waste heat.",

keywords = "liquid crystal networks, low-grade waste heat recovery, poly(vinylidenedifluoride-trifluoroethylene), renewable energy",

author = "Ying Han and Chunli Jiang and Hanmei Fu and Chunhua Luo and Hechun Lin and Hui Peng",

note = "Publisher Copyright: {\textcopyright} 2020 Wiley-VCH GmbH",

year = "2020",

month = oct,

day = "1",

doi = "10.1002/ente.202000612",

language = "英语",

volume = "8",

journal = "Energy Technology",

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number = "10",

}

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T1 - A Flexible Bilayer Actuator Based on Liquid Crystal Network and PVDF–TrFE for Low-Grade Waste Heat Harvesting

AU - Han, Ying

AU - Jiang, Chunli

AU - Fu, Hanmei

AU - Luo, Chunhua

AU - Lin, Hechun

AU - Peng, Hui

PY - 2020/10/1

Y1 - 2020/10/1

N2 - Flexible low-grade waste heat generators are a promising device that can both recycle thermal energy and exhibit elasticity, are light weight, and have easily customized shapes. However, most thermal energy recovery technologies only work at large temperature gradients. Herein, a dynamic generator based on liquid crystal network (LCN) and poly(vinylidenedifluoride–trifluoroethylene) (PVDF–TrFE) is reported. The generator can operate in a temperature of ≈30 °C with a temperature difference of 6 K. LCN expands and shrinks in the temperature fluctuation, which is beneficial for PVDF–TrFE exposure to greater temperature changes. The device is found to exhibit a maximum output voltage of ≈4.5 mV based on pyroelectric and piezoelectric effect. This simple strategy may broaden applications of liquid crystalline actuators for harvesting low-grade waste heat.

AB - Flexible low-grade waste heat generators are a promising device that can both recycle thermal energy and exhibit elasticity, are light weight, and have easily customized shapes. However, most thermal energy recovery technologies only work at large temperature gradients. Herein, a dynamic generator based on liquid crystal network (LCN) and poly(vinylidenedifluoride–trifluoroethylene) (PVDF–TrFE) is reported. The generator can operate in a temperature of ≈30 °C with a temperature difference of 6 K. LCN expands and shrinks in the temperature fluctuation, which is beneficial for PVDF–TrFE exposure to greater temperature changes. The device is found to exhibit a maximum output voltage of ≈4.5 mV based on pyroelectric and piezoelectric effect. This simple strategy may broaden applications of liquid crystalline actuators for harvesting low-grade waste heat.

KW - liquid crystal networks

KW - low-grade waste heat recovery

KW - poly(vinylidenedifluoride-trifluoroethylene)

KW - renewable energy

UR - https://www.scopus.com/pages/publications/85090312026

U2 - 10.1002/ente.202000612

DO - 10.1002/ente.202000612

M3 - 文章

AN - SCOPUS:85090312026

SN - 2194-4288

VL - 8

JO - Energy Technology

JF - Energy Technology

IS - 10

M1 - 2000612

ER -

A Flexible Bilayer Actuator Based on Liquid Crystal Network and PVDF–TrFE for Low-Grade Waste Heat Harvesting

Abstract

Keywords

UN SDGs

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