An oxide-based thermoelectric generator: Transversal thermoelectric strip-device

Teichert, S.; Bochmann, A.; Reimann, Timmy; Schulz, T.; Dreßler, Christian; Töpfer, J.

doi:10.1063/1.4926384

Cited by 18 publications

(23 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A maximum power output of 4.0 mW was determined at Δ T = 225 K for this transversal multilayer TEG device. The observed results are in remarkable agreement with three‐dimensional numerical simulations, utilizing the transport parameters of the two materials and the geometry data of the device . The combination of five of these transversal multilayer energy thermoelectric harvesters to a meander‐like TMLTEG device has been demonstrated recently, and a maximum electrical power output of 30.2 mW at a temperature difference of Δ T = 208 K was measured.…”

Section: Introductionsupporting

confidence: 74%

Oxide multilayer thermoelectric generators

Töpfer

Reimann

Schulz

et al. 2017

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

Oxide multilayer thermoelectric generators (MLTEG) were fabricated, using the standard multilayer technology. Green tapes of p-type La2CuO4 and n-type Nd2CuO4 thermoelectric oxides were stacked with intermediate insulating glass layers. Electrical contacts between thermoelectric oxides were applied, using screen-printing of AgPd paste, and multilayers were cofired at 1000°C. However, cofiring of four different materials turned out to be very challenging, and contact resistance problems frequently led to device malfunctions. We developed a new concept of a transversal multilayer thermoelectric generator (TMLTEG), which is characterized by a simple design. This generator is build up by stacking layers of a p- or n-type thermoelectric oxide and printing stripes of AgPd paste onto the thermoelectric layers at an angle with respect to the temperature gradient. Transversal multilayer thermoelectric generators were fabricated using p-type La2CuO4, or n-type substituted CaMnO3; cofiring of the multilayer stacks was performed at 1000°C. The TMLTEG based upon p-type lanthanum cuprate exhibits a power output of 7.8 mW at ∆T= 200 K in the low temperature range of 25-135°C. Materials issues, cofiring characteristics, design and the thermoelectric performance of multilayer TEGs will be discussed

show abstract

Section: Introductionsupporting

confidence: 74%

Oxide multilayer thermoelectric generators

Töpfer

Reimann

Schulz

et al. 2017

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

show abstract

“…This is different from the longitudinal thermoelectric effect that drives conventional TEGs, which provides an electric potential in the direction of the thermal gradient. 13 A maximum power output of 4.0 mW was determined at DT = 225 K for this transversal multilayer TEG device. It was demonstrated, that such TTEGs might exhibit significant electrical power output.…”

Section: Introductionmentioning

confidence: 94%

“…An oxide transversal TEG using stacked pellets of p-type La 1.97 Sr 0.03 CuO 4 (LSCO) and Ag metal stripes was studied by Dressler et al 12 A substantial power output of about 1 mW at ΔT = 40 K was reported and simulations using finite elements method were used to verify the results. 13 The multilayer stack is built-up in such a way, that the screen-printed metal layers rest upon the thermoelectric oxide layers at a certain angle relative to the direction of heat transport ( Figure 6B). 13 The multilayer stack is built-up in such a way, that the screen-printed metal layers rest upon the thermoelectric oxide layers at a certain angle relative to the direction of heat transport ( Figure 6B).…”

Section: Powder Synthesis and Sintering Behaviormentioning

confidence: 99%

“…12 The combination of the design principles of a transversal TEG with the ceramic multilayer technology was already demonstrated. 13 This generator design is easily realized using the ceramic multilayer technology: green tapes of the thermoelectric oxide with printed diagonal metal stripes are stacked, laminated and co-fired ( Figure 6C). This approach was verified experimentally with stacked LSCO green tapes and printed AgPd metal stripes, and the resulting TEG was considered as transversal thermoelectric strip device.…”

Section: Powder Synthesis and Sintering Behaviormentioning

confidence: 99%

“…For application in TTEGs, two-phase stacked synthetic materials with anisotropic thermoelectric properties were designed, composed of slabs of a thermoelectric semiconductor with a large Seebeck coefficient (either p-or n-type) and a metal with large electrical and thermal conductivity. 13 The combination of five of these transversal multilayer thermoelectric harvesters to a meander-like TMLTEG device has recently been demonstrated, 14 and a maximum electrical power output of 30.2 mW at a temperature difference of DT = 208 K was measured. 8 Recently, Hayashi et al introduced a multilayer thermoelectric generator (MLTEG) with thermoelectric ceramic oxide layers, which was fabricated using a standard ceramic multilayer technology.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Fabrication of a transversal multilayer thermoelectric generator with substituted calcium manganite

et al. 2017

View full text Add to dashboard Cite

The sintering behavior and thermoelectric performance of Ca0.99Gd0.01Mn0.99W0.01O3 was studied, and a multilayer thermoelectric generator was fabricated. The addition of CuO as sintering additive was found to be effective for the reduction in the sintering temperature from 1300°C to about 1000°C-1050°C. Dense samples were obtained after firing at 1050°C, whereas some porosity remained after firing at 1000°C. Samples sintered at reduced temperature exhibit lower electrical conductivity, whereas the Seebeck coefficient S = −150 μV/K at 100°C is not affected by lowering the sintering temperature. The figure of merit is ZT = 0.12 at 700°C for samples sintered at 1300°C; ZT = 0.08 and 0.03 were obtained for multilayer laminates sintered at 1050°C and 1000°C, respectively. A transversal multilayer thermoelectric generator (TMLTEG) was built by stacking layers of substituted CaMnO3 green tapes, and printing AgPd conductor stripes onto the thermoelectric layers at an angle of 30° relative to the direction of the heat flow. The multilayer stack was co-fired at 1000°C. The TMLTEG has a power output of 2.5 mW at ∆T= 200 K in the temperature interval of 25°C-300°C. A meander-like generator with larger power output comprising six TMTEGs is also presented

show abstract

Enhancing the Performance of Oxide‐Based Transverse Thermoelectric Generators by Optimized Internal Geometry

Ibrahim,

Bochmann,

Löhnert

et al. 2024

Adv Funct Materials

View full text Add to dashboard Cite

In transverse thermoelectric generators (TTEGs), comprising an artificially anisotropic material formed by a layered and tilted structure of two materials, the induced thermoelectric voltage is generated perpendicular to the applied temperature gradient. The performance of TTEGs composed of alternate layers of La1.99Sr0.01CuO4 (LSCO) and silver (Ag), tilted at an angle φ, with metal‐to‐ceramic thickness ratio νt, is investigated. Improvement in performance is achieved by optimizing the internal geometry parameters, φ and νt of the tilted layered structure. The transverse power factor PFtr and figure‐of‐merit ZtrT of the artificially tilted material composite are analytically calculated and presented in color contours. Experimentally, a power output Pout of 14.5 mW at ΔT = 140 K is measured for a TTEG with φ = 66°, compared to 2.8 mW and 11 mW for generators with φ of 20° and 45°, respectively. Moreover, TTEGs with different values of νt are prepared. Furthermore, transverse multilayer thermoelectric generators (TMLTEG) with output power of 14.3 mW at ΔT = 225 K are fabricated utilizing the ceramic multilayer technology. It is demonstrated that the transverse thermoelectric effect using an artificial anisotropic material consisting of ceramic and metal can be explored for autonomous thermoelectric energy generation for low‐power applications.

show abstract

An oxide-based thermoelectric generator: Transversal thermoelectric strip-device

Cited by 18 publications

References 30 publications

Oxide multilayer thermoelectric generators

Oxide multilayer thermoelectric generators

Fabrication of a transversal multilayer thermoelectric generator with substituted calcium manganite

Enhancing the Performance of Oxide‐Based Transverse Thermoelectric Generators by Optimized Internal Geometry

Contact Info

Product

Resources

About