Realizing a thermoelectric conversion efficiency of 12% in bismuth telluride/skutterudite segmented modules through full-parameter optimization and energy-loss minimized integration

Zhang, Qihao; Liao, Jincheng; Tang, Yuyan; Gu, Meng; Chen, Ming; Qiu, Pengfei; Bai, Shengqiang; Uher, Ctirad; Chen, Lidong

doi:10.1039/c7ee00447h

Cited by 291 publications

(195 citation statements)

References 39 publications

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“…The cold side temperature was fixed at 300 K. The output voltage, internal resistance, and power output were collected when the hot side temperature was raised to the assigned temperatures. The measurement details can be found in Zhang et al…”

Section: Methodsmentioning

confidence: 99%

Enhanced Thermoelectric Performance and Service Stability of Cu₂Se Via Tailoring Chemical Compositions at Multiple Atomic Positions

Mao

Qiu

et al. 2019

Adv Funct Materials

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Liquid‐like thermoelectric (TE) materials have the advantages of ultrahigh performance, low cost, and environment friendly, but their stability is greatly limited by the possible Cu/Ag deposition under a large current and/or temperature gradient. The pratical application based on liquid‐like TE materials requires both a high TE figure of merit (zT) for high energy conversion efficiency and large critical voltage for good stability, but they are very difficult to be simultaneously achieved in one material. In this work, both the zT and critical voltage are simultaneously optimized in Cu2Se via tailoring chemical compositions at multiple atomic positions, i.e., introducing Cu deficiency at the Cu‐sites to lower Cu ion chemical potential and alloying sulfur at the Se‐sites to reduce carrier concentrations. A maximum zT of 2.0 at 1000 K has been successfully achieved for Cu1.96Se0.8S0.2, about a 30% improvement over that for Cu2Se. More importantly, Cu1.96Se0.8S0.2 demonstrates a much higher critical voltage than Cu2Se, yielding a greatly enhanced service stability under the conditions with/without a temperature gradient. An Ni/Mo/Cu1.96Se0.8S0.2 TE unileg is successfully fabricated with a stable power output even after 400 thermal cycles between 473 and 873 K. This study greatly accelerates the real application of Cu2Se‐based liquid‐like materials.

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Section: Methodsmentioning

confidence: 99%

Enhanced Thermoelectric Performance and Service Stability of Cu₂Se Via Tailoring Chemical Compositions at Multiple Atomic Positions

Mao

Qiu

et al. 2019

Adv Funct Materials

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“…Recently, a high efficiency of ≈12% has been achieved on bismuth telluride/skutterudite segmented modules, [448] which is very encouraging but still not competitive with conventional energy sources. Recently, a high efficiency of ≈12% has been achieved on bismuth telluride/skutterudite segmented modules, [448] which is very encouraging but still not competitive with conventional energy sources.…”

Section: Summary and Perspectivementioning

confidence: 99%

High Performance Thermoelectric Materials: Progress and Their Applications

Yang

Chen

Dargusch

et al. 2017

Advanced Energy Materials

595

434

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Thermoelectric (TE) materials have the capability of converting heat into electricity, which can improve fuel efficiency, as well as providing robust alternative energy supply in multiple applications by collecting wasted heat, and therefore, assisting in finding new energy solutions. In order to construct high performance TE devices, superior TE materials have to be targeted via various strategies. The development of high performance TE devices can broaden the market of TE application and eventually boost the enthusiasm of TE material research. This review focuses on major novel strategies to achieve high‐performance TE materials and their applications. Manipulating the carrier concentration and band structures of materials are effective in optimizing the electrical transport properties, while nanostructure engineering and defect engineering can greatly reduce the thermal conductivity approaching the amorphous limit. Currently, TE devices are utilized to generate power in remote missions, solar–thermal systems, implantable or/wearable devices, the automotive industry, and many other fields; they are also serving as temperature sensors and controllers or even gas sensors. The future tendency is to synergistically optimize and integrate all the effective factors to further improve the TE performance, so that highly efficient TE materials and devices can be more beneficial to daily lives.

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“…The thermoelectric conversion efficiency of TE device dominates by the dimensionless figure of merit zT = σS 2 T / κ , where σ is the electrical conductivity, S is the Seebeck coefficient, κ is the thermal conductivity, T is the absolute temperature, and S 2 σ is the power factor, respectively. In past decades, conventional inorganic bulk‐based TE generators (TEGs) consisting of inorganic TE alloys, such as Bi 2 Te 3 , PbTe, and CoSb 3 , and thin film‐based TEGs made of inorganic TE materials, conducting polymers and derivatives, including poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), polyaniline (PANI), polypyrrole (PPy), and poly(3‐hexylthiophene) (P3HT), have been intensively investigated . However, their applications in Internet of Things and wearable electronics are still vague, because inorganic bulk‐based TEGs are rigid with inferior flexibility, while thin film‐based TEGs can only be bent in one direction.…”

Section: Introductionmentioning

confidence: 99%

Textile‐Based Thermoelectric Generators and Their Applications

Wang

Zhang

2019

Energy & Environ Materials

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With the rapid development of Internet of Things and miniaturized electronics, the demand for wearable power sources with high reliability and long duty cycle promotes the exploration of wearable thermoelectric generators (TEGs). In particular, textile‐based TEGs that can perpetually convert the ubiquitous temperature gradient between human body and ambience into electrical energy have attracted intensive attention to date. These lightweight and three‐dimensional deformable TEGs comprised of fibers, filaments, yarns, or fabrics offer unique merits as wearable power source in comparison with conventional TEGs. In this review, we systematically summarize the state‐of‐the‐art strategies for textile‐based TEGs, including the structure design, fabrication, device performance, and application. Existing critical issues and future research emphasis are also discussed.

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Realizing a thermoelectric conversion efficiency of 12% in bismuth telluride/skutterudite segmented modules through full-parameter optimization and energy-loss minimized integration

Abstract: Full-parameter optimization and energy-loss minimized integration enable a record-high efficiency of 12% in a segmented power-generating module.

Cited by 291 publications

References 39 publications

Enhanced Thermoelectric Performance and Service Stability of Cu₂Se Via Tailoring Chemical Compositions at Multiple Atomic Positions

Enhanced Thermoelectric Performance and Service Stability of Cu₂Se Via Tailoring Chemical Compositions at Multiple Atomic Positions

High Performance Thermoelectric Materials: Progress and Their Applications

Textile‐Based Thermoelectric Generators and Their Applications

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Realizing a thermoelectric conversion efficiency of 12% in bismuth telluride/skutterudite segmented modules through full-parameter optimization and energy-loss minimized integration

Abstract: Full-parameter optimization and energy-loss minimized integration enable a record-high efficiency of 12% in a segmented power-generating module.

Cited by 291 publications

References 39 publications

Enhanced Thermoelectric Performance and Service Stability of Cu2Se Via Tailoring Chemical Compositions at Multiple Atomic Positions

Enhanced Thermoelectric Performance and Service Stability of Cu2Se Via Tailoring Chemical Compositions at Multiple Atomic Positions

High Performance Thermoelectric Materials: Progress and Their Applications

Textile‐Based Thermoelectric Generators and Their Applications

Contact Info

Product

Resources

About

Enhanced Thermoelectric Performance and Service Stability of Cu₂Se Via Tailoring Chemical Compositions at Multiple Atomic Positions

Enhanced Thermoelectric Performance and Service Stability of Cu₂Se Via Tailoring Chemical Compositions at Multiple Atomic Positions