Thermoelectric energy harvesting using cement-based composites: a review

Singh, V. P.; Kumar, M. Krishna; Srivastava, Raj Shekhar; Vaish, Rahul

doi:10.1016/j.mtener.2021.100714

Cited by 38 publications

(22 citation statements)

References 62 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…FTECs have features such as small volume and precise temperature control without vibration and noise. Despite their hard construction, these devices have been employed to replace more conventional methods of cooling, such as those used in refrigerators and electronic gadgets’ central processing units [ 141 , 142 , 143 ]. As a bonus, solar energy may be used by coolers in tandem with a heating system to both chill and warm an area throughout the summer and winter months [ 144 ].…”

Section: Potential Biomedical Applicationmentioning

confidence: 99%

Semiconductor Multimaterial Optical Fibers for Biomedical Applications

et al. 2022

View full text Add to dashboard Cite

Integrated sensors and transmitters of a wide variety of human physiological indicators have recently emerged in the form of multimaterial optical fibers. The methods utilized in the manufacture of optical fibers facilitate the use of a wide range of functional elements in microscale optical fibers with an extensive variety of structures. This article presents an overview and review of semiconductor multimaterial optical fibers, their fabrication and postprocessing techniques, different geometries, and integration in devices that can be further utilized in biomedical applications. Semiconductor optical fiber sensors and fiber lasers for body temperature regulation, in vivo detection, volatile organic compound detection, and medical surgery will be discussed.

show abstract

Section: Potential Biomedical Applicationmentioning

confidence: 99%

Semiconductor Multimaterial Optical Fibers for Biomedical Applications

et al. 2022

View full text Add to dashboard Cite

show abstract

“…In fact, one of the best choices is using thermoelectric (TE) materials to convert large-scale thermal energy into green electricity via Seebeck effect [ 9 , 10 , 11 , 12 ]. It is well known that the performance of a TE material relies on the dimensionless figure of merit ZT = σα 2 T/κ, where σ, α, κ, and T are the electrical conductivity, Seebeck coefficient, thermal conductivity, and absolute temperature, respectively [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Thermoelectric Performances of CNTs-Reinforced Cement Composites with Bi0.5Sb1.5Te3 for Pavement Energy Harvesting

et al. 2022

View full text Add to dashboard Cite

Driven by the huge thermal energy in cement concrete pavements, thermoelectric (TE) cement has attracted considerable attention. However, the current TE cement shows poor performance, which greatly limits its application. Herein, a series of Bi0.5Sb1.5Te3/carbon nanotubes (CNTs) co-reinforced cement composites have been prepared, and their TE properties were systematically investigated. It was shown that the addition of Bi0.5Sb1.5Te3 particles can effectively improve the TE properties of CNTs-reinforced cement composites by building a better conductive network, increasing energy filtering and interfaces scattering. The Bi0.5Sb1.5Te3/CNTs cement composites with 0.6 vol.% of Bi0.5Sb1.5Te3 exhibits the highest ZT value of 1.2 × 10−2, increased by 842 times compared to that of the CNTs-reinforced cement composites without Bi0.5Sb1.5Te3. The power output of this sample with the size of 2.5 × 3.5 × 12 mm3 reaches 0.002 μW at a temperature difference of 19.1 K. These findings shed new light on the development of high-performance TE cement, which can guide continued advances in their potential application of harvesting thermal energy from pavements.

show abstract

“…The wide application options of cement composites are tied to the components used. Among them are various types of concrete, mortars, sealers, and toppings, as well as electrically conductive cement composites [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

“…Cement itself exhibits slight electron movements due to the presence of n-type conductivity. Therefore, with the addition of p-type conductive admixtures (for example, carbon particles), hole movements are present, which eventually develops electron-hole distribution in cement composites [3,97].…”

mentioning

confidence: 99%

Impact of Carbon Particle Character on the Cement-Based Composite Electrical Resistivity

et al. 2021

View full text Add to dashboard Cite

Electroconductive cement-based composites are modern materials that are commonly used in many industries such as the construction industry, among others. For example, these materials can be used as sensors for monitoring changes in construction, grounding suspension, and resistance heating materials, etc. The aim of the research presented in this article is to monitor the impact of carbon particle character on cement-based electroconductive composites. Four types of graphite were analyzed. Natural and synthetic types of graphite, with different particle sizes and one with improved electrically conductive properties, were tested. For the analysis of the electrical conductivity of powder raw materials, a new methodology was developed based on the experience of working with these materials. Various types of graphite were tested in pure cement paste (80% cement, 20% graphite) as well as in a composite matrix, which consisted of cement (16.8%), a mixture of silica sand 0–4 mm (56.4%), graphite filler (20.0%) ground limestone (6.7%) and super plasticizers (0.1%). The resistivity and physical-mechanical properties of the composite material were determined. Furthermore, the resistivity of the test samples was measured with a gradual decrease in saturation. It may be concluded that graphite fillers featuring very fine particles and high specific surface are most suitable and most effective for creating electrically conductive silicate composites. The amount, shape and, in particular, the fineness of the graphite filler particles thus creates suitable conditions for the creation of an integrated internal electricity-conductive network. In the case of the use of a coarse type of graphite or purely non-conductive fillers, the presence of an electrolyte, for example, in the form of water, is necessary to achieve a low resistivity. Samples with fine types of graphite fillers achieved stable resistivity values when the sample humidity changed. The addition of graphite fillers caused a large decrease in the strength of the samples.

show abstract

Thermoelectric energy harvesting using cement-based composites: a review

Cited by 38 publications

References 62 publications

Semiconductor Multimaterial Optical Fibers for Biomedical Applications

Semiconductor Multimaterial Optical Fibers for Biomedical Applications

Enhanced Thermoelectric Performances of CNTs-Reinforced Cement Composites with Bi0.5Sb1.5Te3 for Pavement Energy Harvesting

Impact of Carbon Particle Character on the Cement-Based Composite Electrical Resistivity

Contact Info

Product

Resources

About