Nanocomposites of CuO/SWCNT: Promising thermoelectric materials for mid-temperature thermoelectric generators

Salah, Numan; Baghdadi, Neazar; Alshahrie, Ahmed; Saeed, Abdu; Ansari, Akhalakur Rahman; Memić, Adnan; Koumoto, Kunihito

doi:10.1016/j.jeurceramsoc.2019.04.036

Cited by 31 publications

(13 citation statements)

References 31 publications

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“…When the temperature was raised to 350 K, this value slightly increased to around 1.16 W/mK ( Figure 4 a). These values are low compared to those published in the literature [ 40 ]. This may be due to the presence of SWCNTs in bulk bundles with a complex network that has many interfaces ( Figure 1 a).…”

Section: Resultscontrasting

confidence: 67%

High Thermoelectric Power Generation by SWCNT/PPy Core Shell Nanocomposites

et al. 2022

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Polypyrrole (PPy) is a conducting polymer with attractive thermoelectric (TE) properties. It is simple to fabricate and modify its morphology for enhanced electrical conductivity. However, such improvement is still limited to considerably enhancing TE performance. In this case, a single-wall carbon nanotube (SWCNT), which has ultrathin diameters and exhibits semi-metallic electrical conductivity, might be a proper candidate to be combined with PPy as a core shell one-dimensional (1D) nanocomposite for higher TE power generation. In this work, core shell nanocomposites based on SWCNT/PPy were fabricated. Various amounts of pyrrole (Py), which are monomer sources for PPy, were coated on SWCNT, along with methyl orange (MO) as a surfactant and ferric chloride as an initiator. The optimum value of Py for maximum TE performance was determined. The results showed that the SWCNT acted as a core template to direct the self-assembly of PPy and also to further enhance TE performance. The TE power factor, PF, and figure of merit, zT, values of the pure PPy were initially recorded as ~1 µW/mK2 and 0.0011, respectively. These values were greatly increased to 360 µW/mK2 and 0.09 for the optimized core shell nanocomposite sample. The TE power generation characteristics of the fabricated single-leg module of the optimized sample were also investigated and confirmed these findings. This enhancement was attributed to the uniform coating and good interaction between PPy polymer chains and walls of the SWCNT through π–π stacking. The significant enhancement in the TE performance of SWCNT/PPy nanocomposite is found to be superior compared to those reported in similar composites, which indicates that this nanocomposite is a suitable and scalable TE material for TE power generation.

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Section: Resultscontrasting

confidence: 67%

High Thermoelectric Power Generation by SWCNT/PPy Core Shell Nanocomposites

et al. 2022

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“…The electronic thermal conductivity is estimated from the electrical conductivity using Wiedemann-Franz law. 57 Electrical conductivity as a function of temperature for all samples are shown in Fig. 6(c).…”

Section: Resultsmentioning

confidence: 99%

Thermoelectric properties of Ag-doped CuI: a temperature dependent optical phonon study

Kumar

Battabyal

Sethupathi

et al. 2022

Phys. Chem. Chem. Phys.

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“…Doping indium into the ZnO reduced the internal resistance to 14.1 kΩ, resulting in a 14‐times‐higher power density. Many works involving metal oxides dope the metal oxides with conductive materials, such as other metals [ 102 ] or conductive carbon nanomaterials, [ 103 ] to increase electrical conductivity. Moreover, doping ZnO introduces defects in the crystal lattice, increased porosity and increased photon scattering at grain boundaries for lower thermal conductivity.…”

Section: Teng Materials Optimizationmentioning

confidence: 99%

Recent Advances in the Nanomaterials, Design, Fabrication Approaches of Thermoelectric Nanogenerators for Various Applications

Kim

Kumar

Annamalai

et al. 2022

Adv Materials Inter

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power-dense, owing to their tuneable nanostructures. Hence, smaller TENGs are better suited for small form-factor applications like wearable electronics, internet of things (IoT) devices, and self-powered sensors. However, the higher complexity and cost of TENGs than TEGs inhibit their widespread adoption. This review appraises the latest advances in TENG materials, design, and fabrication in optimizing the performance of TENGs, making TENGs more viable for real-world applications. More precisely, this work examines how nanostructure engineering, nanomaterial compositing, and post-synthesis treatment approaches have enhanced the TE properties of common and promising TE materials, including tellurides, selenides, metal oxides, metal alloys, silicon, carbon nanomaterials, and organic compounds. Given that the TE material is a key component in TENGs, this review highlights how to optimize other vital parameters, including the TENG configuration, contact interface, form factor, heat sink use, and folded shape for specific applications. Lastly, critical attributes of TENGs used in wearable electronics, sensors, implantable electronics, solar energy conversion, and waste heat recovery are analyzed.

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Nanocomposites of CuO/SWCNT: Promising thermoelectric materials for mid-temperature thermoelectric generators

Cited by 31 publications

References 31 publications

High Thermoelectric Power Generation by SWCNT/PPy Core Shell Nanocomposites

High Thermoelectric Power Generation by SWCNT/PPy Core Shell Nanocomposites

Thermoelectric properties of Ag-doped CuI: a temperature dependent optical phonon study

Recent Advances in the Nanomaterials, Design, Fabrication Approaches of Thermoelectric Nanogenerators for Various Applications

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