Direct thermal-to-electric energy conversion material of environmentally-benign Mg_2Si synthesized using wasted Si sludge

2011 Fiscal Year Final Research Report

• Project/Area Number: 21360136
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Power engineering/Power conversion/Electric machinery
• Research Institution: Tokyo University of Science
• Principal Investigator: IIDA Tsutomu 東京理科大学, 基礎工学部, 准教授 (20297625)
• Project Period (FY): 2009 – 2011
• Keywords: 熱電変換 / 半導体 / 環境半導体 / マグネシウムシリサイド / 放電プラズマ焼結

Research Abstract

Thermoelectric power generation is expected to be one of the effective technologies that will help reduce global warming by directly converting energy from waste heat or solar heat to electricity. Magnesium-Silicide(Mg_2Si) has the potential to be an effective thermoelectric material with operating temperatures ranging from 500 K to 900 K. Here we have tried to introduce reusing of industrial waste of Si sludge as a source material for Mg_2Si, because the current product inversion rate of Si for semiconductor LSI devices remains at 25 to 30%, while most of the remainder is disposed of as a waste ; this is mainly discharged as sludge from grinding and polishing processes.

Research Products

• [Journal Article] Fabrication of Large Sintered Pellets of Sb-doped N-type Mg_2Si Using a Plasma Activated Sintering Method (2012)
  • Author(s): Y. Hayatsu, T. Iida, T. Sakamoto, S. Kurosaki, K. Nishio, Y. Kogo, and Y. Takanashi
  • Journal Title: Journal of Solid State Chemistry Volume: (In press)
• [Journal Article] Examination of a thermally viable structure for an unconventional uni-leg Mg_2Si thermoelectric power generator (2012)
  • Author(s): T. Sakamoto, T. Iida, Y. Taguchi, S. Kurosaki, Y. Hayatsu, K. Nishio, Y. Kogo, and Y. Takanashi
  • Journal Title: Journal of Electronic Materials Volume: (In press)
  • DOI: DOI:10.1007/s11664-012-1974-0
• [Journal Article] The use of transition metal silicides to reduce the contact resistance between the electrode and sintered n-type Mg_2Si (2012)
  • Author(s): T. Sakamoto, T. Iida, Y. Honda, M. Tada, T. Sekiguchi, K. Nishio, Y. Kogo, and Y. Takanashi
  • Journal Title: Journal of Electronic Materials Volume: (In press)
  • DOI: DOI:10.1007/s11664-012-2073-y
• [Journal Article] Power generation characteristics of Mg_2Si uni-leg thermoelectric generator (2012)
  • Author(s): T. Nemoto, T. Iida, J. Sato, T. Sakamoto, T. Nakajima and Y. Takanashi
  • Journal Title: Journal of Electronic Materials Volume: (In press)
  • DOI: DOI:10.1007/s11664-012-1963-3
• [Journal Article] Development of a Thermal Buffering Device to Cope with Temperature Fluctuations for a Thermoelectric Power Generator (2012)
  • Author(s): K. Mizuno, K. Sawada, T. Nemoto, T. Iida
  • Journal Title: Journal of Electronic Materials Volume: (In press)
  • DOI: DOI:10.1007/s11664-012-1911-2
• [Journal Article] Thermoelectric properties and power generation characteristics of sintered undoped n-type Mg_2Si (2011)
  • Author(s): T. Sakamoto, T. Iida, N. Fukushima, Y. Honda, M. Tada, Y. Taguchi, Y. Mito, H. Taguchi, and Y. Takanashi
  • Journal Title: Thin Solid Films Volume: 519 Pages: 8528-8531
  • DOI: DOI:10.1016/j.tsf.2011.05.031
• [Journal Article] Thermoelectric behavior of Sb-and Al-doped n-type Mg_2Si devices under large temperature differences (2011)
  • Author(s): T. Sakamoto, T. Iida, S. Kurosaki, K. Yano, H. Taguchi, K. Nishio, and Y. Takanashi
  • Journal Title: Journal of Electronic Materials Volume: 40 Pages: 629-634
  • DOI: DOI:10.1007/s11664-010-1489-5
• [Journal Article] Thermoelectric characteristics of commercialized Mg_2Si source doped with Al, Bi, Ag and Cu (2010)
  • Author(s): T. Sakamoto, T. Iida, J. Sato, A. Matsumoto, Y. Honda, T. Nemoto, J. Sato, T. Nakajima, H. Taguchi, and Y. Takanashi
  • Journal Title: Journal of Electronic Materials Volume: 39 Pages: 1708-1713
• [Journal Article] Characteristics of a pin-fin structure thermal-to-electric uni-leg device using a commercial n-type Mg_2Si source (2010)
  • Author(s): T. Nemoto, T. Iida, J. Sato, Y. Oguni, A. Matsumoto, T. Miyata, T. Sakamoto, T. Nakajima, H. Taguchi, K. Nishio, and Y. Takanashi
  • Journal Title: Journal of Electronic Materials Volume: 39 Pages: 1572-1578
• [Journal Article] Thermoelectric properties of Sb-doped sintered Mg_2Si fabricated using commercial polycrystalline sources (2009)
  • Author(s): N. Fukushima, T. Iida, M. Akasaka, T. Nemoto, T. Sakamoto, R. Kobayashi, H. Taguchi, K. Nishio and Y. Takanashi
  • Journal Title: Materials and Devices for Thermal-to-Electric Energy Conversion Volume: Vol.1166 Pages: N03-21.1-N03-21.6
• [Presentation] Fabrication of Large Sintered Pellets of Sb-doped N-type Mg_2Si Using a Plasma Activated Sintering Method (2011)
  • Author(s): Y. Hayatsu, T. Iida, T. Sakamoto, S. Kurosaki, K. Nishio, Y. Kogo, and Y. Takanashi
  • Organizer: 9^<th> EUROPEAN CONFERENCE ON THERMOELECTRONICS ECT 2011
  • Place of Presentation: Thessaloniki, Greece
  • Year and Date: 20110928-30
• [Presentation] Encouraging thermoelectric properties and durability of residual metal-Mg free Mg_2Si prepared by an all molten process (2011)
  • Author(s): T. Iida, T. Sakamoto, K. Nishio, Y. Kogo, Y. Taguchi, S. Sakuragi, and Y. Takanashi
  • Organizer: 9^<th> EUROPEAN CONFERENCE ON THERMOELECTRONICS ECT 2011
  • Place of Presentation: Thessaloniki, Greece
  • Year and Date: 20110928-30
• [Presentation] Thermoelectric characterization of n-type Mg_2Si doped with transition metal elements (2011)
  • Author(s): T. Mito, T. Iida, T. Sakamoto, R. Miyahara, K. Nishio, Y. Taguchi, S. Sakuragi, Y. Kogo, and Y. Takanashi
  • Organizer: 9^<th> EUROPEAN CONFERENCE ON THERMOELECTRONICS ECT 2011
  • Place of Presentation: Thessaloniki, Greece
  • Year and Date: 20110928-30
• [Presentation] Formation of electrode materials for sintered n-type Mg_2Si using electroless plating and monobloc sintering methods (2011)
  • Author(s): T. Sakamoto, K. Sugiyama, T. Iida, D. Mori, M. Ogi, Y. Honda, M. Tada, T. Sekiguchi, K. Nishio, Y. Kogo, and Y. Takanashi
  • Organizer: 9^<th> EUROPEAN CONFERENCE ON THERMOELECTRONICS ECT 2011
  • Place of Presentation: Thessaloniki, Greece
  • Year and Date: 20110928-30
• [Presentation] Examination of a thermally viable structure for an unconventional uni-leg Mg_2Si thermoelectric power generator (2011)
  • Author(s): T. Sakamoto, T. Iida, Y. Taguchi, S. Kurosaki, Y. Hayatsu, K. Nishio, Y. Kogo, and Y. Takanashi
  • Organizer: IEEE 30^<th> INTERNATIONAL CONFERENCE ON THERMOELECTRONICS ICT 2011
  • Place of Presentation: Traverse City, USA
  • Year and Date: 20110717-21
• [Presentation] The use of transition metal silicides to reduce the contact resistance between the electrode and sintered n-type Mg_2Si (2011)
  • Author(s): T. Sakamoto, T. Iida, Y. Honda, M. Tada, T. Sekiguchi, K. Nishio, Y. Kogo, and Y. Takanashi
  • Organizer: IEEE 30^<th> INTERNATIONAL CONFERENCE ON THERMOELECTRONICS ICT 2011
  • Place of Presentation: Traverse City, USA
  • Year and Date: 20110717-21
• [Presentation] Development of a thermal buffering device to cope with temperature fluctuations for a thermoelectric power generator (2011)
  • Author(s): K. Mizuno, K. Sawada, T. Nemoto, and, T. Iida
  • Organizer: IEEE 30^<th> INTERNATIONAL CONFERENCE ON THERMOELECTRONICS ICT 2011
  • Place of Presentation: Traverse City, USA
  • Year and Date: 20110717-21
• [Presentation] Electrical characteristics and thermal stability of metal electrodes for n-type Mg_2Si prepared by monobloc plasma activated sintering process (2010)
  • Author(s): M. Tada, T. Iida, Y. Honda, T. Sakamoto, H. Taguchi, and Y. Takanashi
  • Organizer: MATERIALS RESEARCH SOCIETY 2010 Fall Meeting
  • Place of Presentation: Boston, USA
  • Year and Date: 20101129-1202
• [Presentation] Thermoelectric properties and power generation characteristics sintered n-type Mg_2Si (2010)
  • Author(s): T. Sakamoto, T. Iida, N. Fukushima, Y. Honda, M. Tada, Y. Taguchi, Y. Mito, H. Taguchi, and Y. Takanashi
  • Organizer: ASIA-PACIFIC CONFERENCE ON SEMICONDUCTING SILICIDES 2010 Apac-Silicide 2010
  • Place of Presentation: Tsukuba, Japan
  • Year and Date: 20100724-26
• [Presentation] Fabrication of an environmentally-benign Al-doped Mg_2Si thermal-to-electric conversion module by using industrial Si waste and recycled Mg alloy (2010)
  • Author(s): T. Sakamoto, T. Iida, S. Kurosaki, H. Taguchi, Y. Takanashi, S. Sakuragi, Y. Taguchi, Y. Mito, T. Nemoto, T. Nakajima
  • Organizer: 1^<ST> INTERNATIONAL CONFERENCE ON MATERIALS FOR ENERGY
  • Place of Presentation: Karlsruhe, Germany
  • Year and Date: 20100704-08
• [Presentation] Thermoelectric behavior of Sb-and Al-doped n-type Mg_2Si device under large temperature differences (2010)
  • Author(s): T. Sakamoto, T. Iida, S. Kurosaki, K. Yano, H. Taguchi, K. Nishio, and Y. Takanashi
  • Organizer: IEEE 29^<th> INTERNATIONAL CONFERENCE ON THERMOELECTRONICS ICT 2010
  • Place of Presentation: Shanghai, China
  • Year and Date: 20100530-0602
• [Presentation] Thermoelectric properties of sintered Mg_2Si fabricated using commercial Al-doped n-type polycrystalline sources (2010)
  • Author(s): T. Sakamoto, T. Iida, T. Miyata, S. Sakuragi, Y. Taguchi, Y. Mito, H. Taguchi, K. Nishio and Y. Takanashi
  • Organizer: MATERIALS RESEARCH SOCIETY 2010 Spring Meeting
  • Place of Presentation: San Francisco, USA
  • Year and Date: 20100405-09
• [Presentation] Direct thermal-to-electric energy conversion material of environmentally-benign Mg_2Si synthesized using wasted Si sludge and recycled Mg alloy (2009)
  • Author(s): Y. Honda, T. Iida, T. Sakamoto, S. Sakuragi, Y. Taguchi, Y. Mito, T. Nemoto, T. Nakajima, H. Taguchi, K. Nishio, and Y. Takanashi
  • Organizer: MATERIALS RESEARCH SOCIETY 2009 Fall Meeting
  • Place of Presentation: Boston, USA
  • Year and Date: 20091130-1204
• [Presentation] Thermoelectric characteristics of commercialized Mg_2Si source doped with Al, Bi, Ag and Cu (2009)
  • Author(s): T. Sakamoto, T. Iida, A. Matsumoto, Y. Honda, T. Nemoto, J. Sato, T. Nakajima, H. Taguchi, and Y. Takanashi
  • Organizer: IEEE 28^<th> INTERNATIONAL CONFERENCE ON THERMOELECTRONICS ICT 2009
  • Place of Presentation: Freiburg, Germany
  • Year and Date: 20090726-30
• [Remarks]
  • URL: http://web.mac.com/iida_lab/Info/Home.html
• [Remarks] 2012年7月より新ホームページアドレス
  • URL: http://www.tus-iidalab.net/
• [Patent(Industrial Property Rights)] 蓄熱装置及び蓄熱装置を備えるシステム (2012)
  • Inventor(s): 飯田努、坂本達也、水野邦明、水戸洋彦、根本崇、箕輪昌啓
  • Industrial Property Rights Holder: 飯田努、坂本達也、水野邦明、水戸洋彦、根本崇、箕輪昌啓
  • Industrial Property Number: 特許、特願2011-*****
  • Filing Date: 2012-03-30
• [Patent(Industrial Property Rights)] マグネシウムシリサイド、熱電変換材料、焼結体、熱電変換素子用焼結体、熱電変換素子、及び熱電変換モジュール (2011)
  • Inventor(s): 飯田努、三戸隆人士、宮原良輔、坂本達也、櫻木史郎、田口豊、水戸洋彦
  • Industrial Property Rights Holder: 飯田努、三戸隆人士、宮原良輔、坂本達也、櫻木史郎、田口豊、水戸洋彦
  • Industrial Property Number: 特許、特願2011-*****
  • Filing Date: 2011-09-26
• [Patent(Industrial Property Rights)] 焼結体、熱電変換素子用焼結体、熱電変換素子及び熱電変換モジュール (2011)
  • Inventor(s): 飯田努、向後保雄、坂本達也、黒崎祥太、早津勇亮、水戸洋彦
  • Industrial Property Rights Holder: 飯田努、向後保雄、坂本達也、黒崎祥太、早津勇亮、水戸洋彦
  • Industrial Property Number: 特許、特願2011-*****
  • Filing Date: 2011-09-26
• [Patent(Industrial Property Rights)] 蓄熱装置及び蓄熱装置を備えるシステム (2011)
  • Inventor(s): 飯田努、坂本達也、水野邦明、水戸洋彦、根本崇、箕輪昌啓
  • Industrial Property Rights Holder: 飯田努、坂本達也、水野邦明、水戸洋彦、根本崇、箕輪昌啓
  • Industrial Property Number: 特許、特願2011-*****
  • Filing Date: 2011-03-30
• [Patent(Industrial Property Rights)] 熱電変換素子及び熱電変換モジュール (2011)
  • Inventor(s): 飯田努、本多康彦、多田光宏、坂本達也、赤坂昌保
  • Industrial Property Rights Holder: 飯田努、本多康彦、多田光宏、坂本達也、赤坂昌保
  • Industrial Property Number: 特許、特願2011-*****・PCT/JP2011/******
  • Filing Date: 2011-11-30
• [Patent(Industrial Property Rights)] 熱電変換モジュールとその製法 (2010)
  • Inventor(s): 飯田努、西尾圭史
  • Industrial Property Rights Holder: 飯田努、西尾圭史
  • Industrial Property Number: 特許、特願2010-1226701
  • Filing Date: 2010-05-28
• [Patent(Industrial Property Rights)] アルミニウム・マグネシウム・ケイ素複合材料とその製法 (2010)
  • Inventor(s): 飯田努、福島直樹、坂本達也、水戸洋彦、難波宏邦、田口豊、赤坂昌保立川守、日野賢一
  • Industrial Property Rights Holder: 飯田努、福島直樹、坂本達也、水戸洋彦、難波宏邦、田口豊、赤坂昌保立川守、日野賢一
  • Industrial Property Number: PCT/JP2010/062509
  • Filing Date: 2010-07-26
• [Patent(Industrial Property Rights)] マグネシウム・ケイ素複合材料とその製法 (2010)
  • Inventor(s): 飯田努、本多康彦、福島直樹、坂本達也、水戸洋彦、難波宏邦、田口豊
  • Industrial Property Rights Holder: 飯田努、本多康彦、福島直樹、坂本達也、水戸洋彦、難波宏邦、田口豊
  • Industrial Property Number: PCT/JP2010/061185
  • Filing Date: 2010-06-30
• [Patent(Industrial Property Rights)] アルミニウム・マグネシウム・ケイ素複合材料とその製法 (2009)
  • Inventor(s): 飯田努、福島直樹、坂本達也、水戸洋彦、難波宏邦、田口豊、赤坂昌保立川守、日野賢一
  • Industrial Property Rights Holder: 飯田努、福島直樹、坂本達也、水戸洋彦、難波宏邦、田口豊、赤坂昌保立川守、日野賢一
  • Industrial Property Number: 特許、特願2009-174428
  • Filing Date: 2009-07-27
• [Patent(Industrial Property Rights)] マグネシウム・ケイ素複合材料とその製法 (2009)
  • Inventor(s): 飯田努、本多康彦、福島直樹、坂本達也、水戸洋彦、難波宏邦、田口豊
  • Industrial Property Rights Holder: 飯田努、本多康彦、福島直樹、坂本達也、水戸洋彦、難波宏邦、田口豊
  • Industrial Property Number: 特許、特願2009-154701
  • Filing Date: 2009-06-30