期刊
ACS APPLIED ENERGY MATERIALS
卷 1, 期 6, 页码 2934-2941出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsaem.8b00617
关键词
organic thermoelectrics; carbon nanotubes; polymer nanocomposite; n-type conducting yarn; electronic textile
资金
- Swedish Research Council Formas
- Knut and Alice Wallenberg Foundation through a Wallenberg Academy Fellowship
- European Research Council (ERC) [637624]
- European Research Council (ERC) [637624] Funding Source: European Research Council (ERC)
Thermoelectric textiles that are able to generate electricity from heat gradients may find use as power sources for a wide range of miniature wearable electronics. To realize such thermoelectric textiles, both p- and n-type yarns are needed. The realization of air-stable and flexible n-type yarns, i.e., conducting yarns where electrons are the majority charge carriers, presents a considerable challenge due to the scarcity of air-stable n-doped organic materials. Here, we realize such n-type yarns by coating commercial sewing threads with a nanocomposite of multiwalled carbon nanotubes (MWNTs) and poly(N-vinylpyrrolidone) (PVP). Our n-type yarns have a bulk conductivity of 1 S cm(-1) and a Seebeck coefficient of 14 mu V K-1, which is stable for several months at ambient conditions. We combine our coated n-type yarns with poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) dyed silk yarns, constituting the p-type component, to realize a textile thermoelectric module with 38 n/p elements, which are capable of producing an open-circuit voltage of 143 mV when exposed to a temperature gradient of 116 degrees C and a maximum power output of 7.1 nW at a temperature gradient of 80 degrees C.
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