Lead-free Ba(1-x)SrxTiO3 ceramics for room-temperature pyroelectric energy conversion

Baoyan Fan; Guang Yang; Ming Yu Li; Pin Liu; Shiyong Qiu; Meng Shen; Huan Liu; Guangzu Zhang; Qing Wang; Shenglin Jiang

doi:10.1016/j.ceramint.2018.02.009

Lead-free Ba_(1-x)Sr_xTiO₃ ceramics for room-temperature pyroelectric energy conversion

Baoyan Fan, Guang Yang, Ming Yu Li, Pin Liu, Shiyong Qiu, Meng Shen, Huan Liu, Guangzu Zhang, Qing Wang, Shenglin Jiang

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

Lead-free Ba_(1-x)Sr_xTiO₃ (BST) ceramics were fabricated to convert near-room-temperature waste heat to electric energy for creating self-powered and ‘battery-less’ systems. In comparison to thermoelectrics that are specifically used for harvesting heat with stable temperature span, pyroelectric converters based on Olsen cycle mechanism can harvest heat with temperature-vibration environment. Large energy conversion density (N_D) was obtained in BST ceramics within the narrower temperature gradient (< 60 °C). In terms of the diffused phase transition (DPT) in BST ceramics, the extra slim hysteresis loops processed relatively low coercive field (E_c) and hysteresis loss, which can effectively enhance the N_D owing to the wider electrical field interval. The effect of Curie temperature (T_c) tuned by the ratios of Ba/Sr on N_D and applicable range of temperature were also systematically examined. At the same electrical field difference (07 MV/m), the optimal energy conversion properties were gained around the T_c, e.g., 0.36 J/cm³ for BST66/³4 (T_c = 23 °C) within a temperature range between 25 °C and 65 °C, and 0.48 J/cm³ for BST72/28 (T_c = 43 °C) between 25 °C and 85 °C.

Original language	English (US)
Pages (from-to)	8270-8276
Number of pages	7
Journal	Ceramics International
Volume	44
Issue number	7
DOIs	https://doi.org/10.1016/j.ceramint.2018.02.009
State	Published - May 2018

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Process Chemistry and Technology
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/j.ceramint.2018.02.009

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@article{679bb46668914856abd921b065695e12,

title = "Lead-free Ba(1-x)SrxTiO3 ceramics for room-temperature pyroelectric energy conversion",

abstract = "Lead-free Ba(1-x)SrxTiO3 (BST) ceramics were fabricated to convert near-room-temperature waste heat to electric energy for creating self-powered and {\textquoteleft}battery-less{\textquoteright} systems. In comparison to thermoelectrics that are specifically used for harvesting heat with stable temperature span, pyroelectric converters based on Olsen cycle mechanism can harvest heat with temperature-vibration environment. Large energy conversion density (ND) was obtained in BST ceramics within the narrower temperature gradient (< 60 °C). In terms of the diffused phase transition (DPT) in BST ceramics, the extra slim hysteresis loops processed relatively low coercive field (Ec) and hysteresis loss, which can effectively enhance the ND owing to the wider electrical field interval. The effect of Curie temperature (Tc) tuned by the ratios of Ba/Sr on ND and applicable range of temperature were also systematically examined. At the same electrical field difference (07 MV/m), the optimal energy conversion properties were gained around the Tc, e.g., 0.36 J/cm3 for BST66/34 (Tc = 23 °C) within a temperature range between 25 °C and 65 °C, and 0.48 J/cm3 for BST72/28 (Tc = 43 °C) between 25 °C and 85 °C.",

author = "Baoyan Fan and Guang Yang and Li, {Ming Yu} and Pin Liu and Shiyong Qiu and Meng Shen and Huan Liu and Guangzu Zhang and Qing Wang and Shenglin Jiang",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd and Techna Group S.r.l.",

year = "2018",

month = may,

doi = "10.1016/j.ceramint.2018.02.009",

language = "English (US)",

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T1 - Lead-free Ba(1-x)SrxTiO3 ceramics for room-temperature pyroelectric energy conversion

AU - Fan, Baoyan

AU - Yang, Guang

AU - Li, Ming Yu

AU - Liu, Pin

AU - Qiu, Shiyong

AU - Shen, Meng

AU - Liu, Huan

AU - Zhang, Guangzu

AU - Wang, Qing

AU - Jiang, Shenglin

PY - 2018/5

Y1 - 2018/5

N2 - Lead-free Ba(1-x)SrxTiO3 (BST) ceramics were fabricated to convert near-room-temperature waste heat to electric energy for creating self-powered and ‘battery-less’ systems. In comparison to thermoelectrics that are specifically used for harvesting heat with stable temperature span, pyroelectric converters based on Olsen cycle mechanism can harvest heat with temperature-vibration environment. Large energy conversion density (ND) was obtained in BST ceramics within the narrower temperature gradient (< 60 °C). In terms of the diffused phase transition (DPT) in BST ceramics, the extra slim hysteresis loops processed relatively low coercive field (Ec) and hysteresis loss, which can effectively enhance the ND owing to the wider electrical field interval. The effect of Curie temperature (Tc) tuned by the ratios of Ba/Sr on ND and applicable range of temperature were also systematically examined. At the same electrical field difference (07 MV/m), the optimal energy conversion properties were gained around the Tc, e.g., 0.36 J/cm3 for BST66/34 (Tc = 23 °C) within a temperature range between 25 °C and 65 °C, and 0.48 J/cm3 for BST72/28 (Tc = 43 °C) between 25 °C and 85 °C.

AB - Lead-free Ba(1-x)SrxTiO3 (BST) ceramics were fabricated to convert near-room-temperature waste heat to electric energy for creating self-powered and ‘battery-less’ systems. In comparison to thermoelectrics that are specifically used for harvesting heat with stable temperature span, pyroelectric converters based on Olsen cycle mechanism can harvest heat with temperature-vibration environment. Large energy conversion density (ND) was obtained in BST ceramics within the narrower temperature gradient (< 60 °C). In terms of the diffused phase transition (DPT) in BST ceramics, the extra slim hysteresis loops processed relatively low coercive field (Ec) and hysteresis loss, which can effectively enhance the ND owing to the wider electrical field interval. The effect of Curie temperature (Tc) tuned by the ratios of Ba/Sr on ND and applicable range of temperature were also systematically examined. At the same electrical field difference (07 MV/m), the optimal energy conversion properties were gained around the Tc, e.g., 0.36 J/cm3 for BST66/34 (Tc = 23 °C) within a temperature range between 25 °C and 65 °C, and 0.48 J/cm3 for BST72/28 (Tc = 43 °C) between 25 °C and 85 °C.

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Lead-free Ba_(1-x)Sr_xTiO₃ ceramics for room-temperature pyroelectric energy conversion

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