Farming thermoelectric paper

Abol-Fotouh, Deyaa; Dörling, Bernhard; Zapata‐Arteaga, Osnat; Rodríguez‐Martínez, Xabier; Gómez, Andrés; Reparaz, J. S.; Laromaine, Anna; Roig, Anna; Campoy‐Quiles, Mariano

doi:10.1039/c8ee03112f

Cited by 74 publications

(74 citation statements)

References 53 publications

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“…[36] Briefly, bacterial cellulose fibers are grown in an aqueous medium, in the presence of dispersed CNTs, forming well-intermixed films. eDIPS CNTs were bought from Meijo Nano Carbon.…”

Section: Methodsmentioning

confidence: 99%

“…Using a custom-built setup, the materials were illuminated using a solar simulator and the illuminated area of each sample was varied using a translation stage and a cover. [36] The reduced electrical conductivity is compensated by the lower thermal conductivity ( Figures S9 and S10, Supporting Information), so the overall performance of the two CNT materials is similar. Energy Mater.…”

Section: Soteg Devicesmentioning

confidence: 99%

“…The dimension of the legs was 1.5 cm in length by 0.8 cm in width to accommodate for the findings in the previous sections (see Figure 5b,d). [36] This is particularly so for sensors located in areas where photovoltaics might have difficulties to operate reliably, such as deserts (heat and dust strongly decreases silicon PV efficiency) and forests (where oscillating leaf-shadowing may cause catastrophic PV failure). A schematic of the SOTEG and a picture of the actual device can be found in Figure 7b and Figure S17 in Supporting Information, respectively.…”

Section: Soteg Geometries With Concentrationmentioning

confidence: 99%

“…As reported by Abol-Fotouh et al, the in-plane thermal conductivities of pure eDIPS and eDIPS:cellulose composites were 27 and 2.7 W m −1 K −1 , respectively. [36] Most likely, the lower thermal conductivity reduces the conduction losses to the contacts, thus resulting in an enhancement in temperature. In addition, the results shown in Figure 2c,d provide insight on ideal operating conditions for SOTEGS.…”

Section: Solar Absorber Characterizationmentioning

confidence: 99%

“…The cellulose introduces porosity and a low thermal conductivity component into the CNTs that leads to a lower effective thermal conductivity but also reduces the electrical conductivity. [36] The reduced electrical conductivity is compensated by the lower thermal conductivity (Figures S9 and S10, Supporting Information), so the overall performance of the two CNT materials is similar. To achieve a maximum power of ≈4 nW only 40% of the material needs to be illuminated.…”

Section: Soteg Devicesmentioning

confidence: 99%

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Solar Harvesting: a Unique Opportunity for Organic Thermoelectrics?

Jurado

Dörling

Zapata‐Arteaga

et al. 2019

Advanced Energy Materials

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Thermoelectrics have emerged as a strategy for solar‐to‐electricity conversion, as they can complement photovoltaic devices as IR harvesters or operate as stand‐alone systems often under strong light and heat concentration. Inspired by the recent success of inorganic‐based solar thermoelectric generators (STEGs), in this manuscript, the potential of benchmark organic thermoelectric materials for solar harvesting is evaluated. It is shown that the inherent properties of organic semiconductors allow the possibility of fabricating organic STEGs (SOTEGs) of extraordinary simplicity. The broadband light absorption exhibited by most organic thermoelectrics combined with their low thermal conductivities results in a significant temperature rise upon illumination as seen by IR thermography. Under 2 sun illumination, a temperature difference of 50 K establishes between the illuminated and the non‐illuminated sides of a poly(3,4‐ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) film, and ≈40 K for a carbon nanotube/cellulose composite. Moreover, when using light as a heat source, the Seebeck coefficient remains unaffected, while a small photoconductivity effect is observed in PEDOT:PSS and carbon nanotubes. Then, the effect of several geometrical factors on the power output of a solar organic thermoelectric generator is investigated, enabling us to propose simple SOTEG geometries that capitalize on the planar geometry typical of solution‐processable materials. Finally, a proof‐of‐concept SOTEG is demonstrated, generating 180 nW under 2 suns.

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“…[36] Briefly, bacterial cellulose fibers are grown in an aqueous medium, in the presence of dispersed CNTs, forming well-intermixed films. eDIPS CNTs were bought from Meijo Nano Carbon.…”

Section: Methodsmentioning

confidence: 99%

Section: Soteg Devicesmentioning

confidence: 99%

Section: Soteg Geometries With Concentrationmentioning

confidence: 99%

Section: Solar Absorber Characterizationmentioning

confidence: 99%

Section: Soteg Devicesmentioning

confidence: 99%

See 3 more Smart Citations

Solar Harvesting: a Unique Opportunity for Organic Thermoelectrics?

Jurado

Dörling

Zapata‐Arteaga

et al. 2019

Advanced Energy Materials

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Functionalized Bio‐carbon Nanomaterials for Environmental Utilizations

Rozbu

Kabir

Selvakumar

2021

Environmental Applications of Carbon Nanomaterials‐Based Devices

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Controlling the Thermoelectric Properties of Organometallic Coordination Polymers via Ligand Design

Liu

Savory

et al. 2020

Adv Funct Materials

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Organometallic coordination polymers (OMCPs) are a promising class of thermoelectric materials with high electrical conductivities and thermal resistivities. The design criteria for these materials, however, remain elusive and so far material modifications have been focused primarily on the nature of the metal cation to tune the thermoelectric properties. Herein, an alternative approach is described by synthesizing new organic ligands for OMCPs, allowing modulation of the thermoelectric properties of the novel OMCP materials over several orders of magnitude, as well as controlling the polarity of the Seebeck coefficient. Extensive material purification combined with spectroscopy experiments and calculations furthermore reveal the charge‐neutral character of the polymer backbones. In the absence of counter‐cations, the OMCP backbones are composed of air‐stable, ligand‐centered radicals. The findings open up new synthetic possibilities for OMCPs by removing structural constraints and putting significant emphasis on the molecular structure of the organic ligands in OMCP materials to tune their thermoelectric properties.

show abstract

Farming thermoelectric paper

Abstract: Bacteria are used to grow in an aqueous medium a cellulose-carbon nanotube composite porous film with good thermoelectric properties, flexibility and recyclability.

Cited by 74 publications

References 53 publications

Solar Harvesting: a Unique Opportunity for Organic Thermoelectrics?

Solar Harvesting: a Unique Opportunity for Organic Thermoelectrics?

Functionalized Bio‐carbon Nanomaterials for Environmental Utilizations

Controlling the Thermoelectric Properties of Organometallic Coordination Polymers via Ligand Design

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