積層型熱電変換素子の共焼結挙動，発電特性及び応用

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  • Co-firing Behavior, Electric Power, and Application of Monolithic Thermoelectric Generator
  • 受賞記念講演 : 平成30年度技術進歩賞 積層型熱電変換素子の共焼結挙動,発電特性及び応用
  • ジュショウ キネン コウエン : ヘイセイ 30ネンド ギジュツ シンポショウ セキソウガタ ネツデンヘンカン ソシ ノ キョウ ショウケツ キョドウ,ハツデン トクセイ オヨビ オウヨウ

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<p>This study is reported for the monolithic thermoelectric generator (TEG) which consists of p-type semiconductor, n-type semiconductor, and insulator layers. We used Ni0.9Mo0.1 alloy as a p-type thermoelectric material, (Sr1-x,Lax)TiO3 as an n-type thermoelectric material, and Y2O3-ZrO2 as an insulator. A firmly integrated TEG after co-firing was obtained without delamination by controlling the sintering behavior of the three different materials. The TEG has 36 pairs of p-i-n junction and generates about 100 μW at temperature difference 10°C. After the reliability test (high-temperature storage test, pressure cooker test, and heat shock test), power change rate of the TEG was less than 5%. Wireless sensor node (WSN) using the TEG as a power supply was manufactured. The TEG under a load connected to a circuit was continued generating power for 4600 h at a 120°C heat source and air cooling. During the test, signals were sent from WSN once every 10 s.</p>

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