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首页> 外文期刊>Journal of Materials Science and Chemical Engineering >Thermoelectric Properties of Misfit Layered Bismuth-Based Rhodium Oxides, (Bi,Pb)&sub&2&/sub&Sr&sub&2&/sub&Rh&sub&2&/sub&O&sub&y&/sub&
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Thermoelectric Properties of Misfit Layered Bismuth-Based Rhodium Oxides, (Bi,Pb)&sub&2&/sub&Sr&sub&2&/sub&Rh&sub&2&/sub&O&sub&y&/sub&

机译:错配的层状铋基铑氧化物(Bi,Pb)2 / Sr 2-/ Rh 2-/ O 3 y y的热电性质。子&

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摘要

Rhodium oxides, including a misfitlayered structure with alternate stacking of a rock salttype layer and a hexagonal RhO_(2) layer, are expected to have good thermoelectric properties. Among them, the thermoelectric properties (electrical conductivity (σ), Seebeck coefficient (S), Figure of merit (ZT) and calculated thermal conductivity (κ) by S, σ, ZT, and absolute temperature (T)) of bismuth-based rhodium oxides ((Bi_(1-x),Pb_(x)) _(2)Sr_(2)Rh_(2)O_(y), x = 0 and 0.02, hereafter BSR and BPSR, respectively) were investigated. In comparison with Bi_(2)Sr_(2)Co_(2)O_(y) (BSC) at 700°C, S and κ enhanced (increased S, 110 (BSR) and 105 μV K~(-1) (BPSR) from 85 μV K -1) (BSC) and decreased κ, 0.32 (BSR) and 0.50 W m~(-1) K~(-1) (BPSR) from 1.75 W m~(-1) K~(-1) (BSC)), whereas σ decreased (15 (BSR) and 31 S cm~(-1) (BPSR) from 70 S cm~(-1) (BSC)). BPSR reached the highest ZT value of 0.067 at 700 ° C, compared to those of 0.056 (BSR) and 0.027 (BSC).
机译:包括具有盐盐层和六角形RhO_(2)层交替堆叠的错配层结构的铑氧化物有望具有良好的热电性能。其中,基于铋的热电性能(电导率(σ),塞贝克系数(S),品质因数(ZT)和通过S,σ,ZT和绝对温度(T)计算出的热导率(κ))研究了铑氧化物((Bi_(1-x),Pb_(x))_(2)Sr_(2)Rh_(2)O_(y),x = 0和0.02,此后分别为BSR和BPSR)。与在700°C下Bi_(2)Sr_(2)Co_(2)O_(y)(BSC)相比,S和κ增强(S,110(BSR)和105μVK〜(-1)(BPSR增加) )从85μVK -1)(BSC)降低到κ,0.32(BSR)和0.50 W m〜(-1)K〜(-1)(BPSR)从1.75 W m〜(-1)K〜(- 1)(BSC)),而σ从70 S cm〜(-1)(BSC)降低了(15(BSR)和31 S cm〜(-1)(BPSR))。 BPSR在700°C时达到最高ZT值0.067,而0.056(BSR)和0.027(BSC)最高。

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