2002 Fiscal Year Annual Research Report

VGCFを用いた超高熱伝導性C/Cコンポジットの調製と熱電機能の評価

Research Project

Project/Area Number	13305050
Research Institution	Shinshu University
Principal Investigator	遠藤守信信州大学, 工学部, 教授 (10021015)
Co-Investigator(Kenkyū-buntansha)	宮崎敬長野工業高等専門学校, 電子工学科, 教授 (10141889) 押田京一長野工業高等専門学校, 電子情報工学科, 教授 (90224229) 林卓哉信州大学, 情報センター, 助教授 (80313831)
Keywords	C / C複合材料 / BGCF / 熱伝導性 / キャパシタ / ピッチ系材料 / 電子顕微鏡 / 元素分析 / ファジィ画像処理
Research Abstract	C/Cコンポジットを用いて高性能エネルギーデバイスの応用を図るため、電気二重層キャパシタ材料の中で最も高い容量示しているPVDC炭にVGCFを混合し電極を作成した。その結果、VGCFの高い電気伝導性により、セル抵抗値(Equivalent Series Resistance, ESR)が改善される結果を得た。実際に商品化する段階でより重要となる高い放電電流密度での容量も比較的に伸び、高性能キャパシタへの応用に適していると考えられる。その他に、自動車のように積載可能な場所が限られている場合は、重量あたりの容量より体積当たりの容量がより重要であることに着目し高密度活性炭を開発した。また、VGCF(1wt%)を板状アルミ金属の間に挟みこみ、数層積み重ねた後に板状に圧延して層状バルク体を作成した。得られた試料を円盤状に切り出して熱伝導率をレーザーフラッシュ装置にて測定したところ、一般に非常に熱伝導性に優れると言われている銅よりも高い熱伝導率を得ることができた。これは気相成長ナノファイバーの高い熱伝導性とアルミニウムの軽量・経済性を活かした放熱用部材として非常に有効である。さらにC/Cコンポジット材のバインダとして使用することのできるメソフェーズピッチについて、汎用的に用いられている石油系ピッチ(Ashland 240)と特殊な石炭系ピッチを比較することにより初期炭素化過程を、透過電子顕微鏡、走査電子顕微鏡、偏光顕微鏡、X線回折、元素分析等により追跡した。石油系ピッチに比して石炭系ピッチは50℃までは重量変化を伴わない閉じた系で微細組織が生成されることが明らかとなり、炭素化過程における新たな知見が得られ、高熱伝導を有する高配向バインダとして有用であると考えられた。また、電子顕微鏡微画像をもとにファジィ位相の概念から作り出したファジィテンプレートを応用した画像処理を加えることにより、これまで顕微鏡による材料の微細構造の観察は定性的な域に留っていたものが、これによって定量的な域にまで発展させることができた。そしてC/Cコンポジット材における炭素化過程について微細構造の変化を定量的に捉えることができた。

Research Products

(27 results)

All Other

All Publications (27 results)

[Publications] M.Endo, T.Maeda, T.Takeda, Y.J.Kim, K.Kobayashi, H.Hara, M.S.Dresselhaus: "Capacitance and Pore-Size Distribution in Aqueous and Nonaqueous Electrolytes Using Various Activated Carbon Electrodes"Journal of The Electrochemical Society. 148・8. A910-A914 (2002)
[Publications] Y.A.Kim, T.Havashi, Y.Fukai, M.Endo, T.Yanagisawa, M.S.Dresselhaus: "Effect of ball milling on morphology of cup-stacked carbon nanotubes"Chemical Physics Letters. 355. 279-284 (2002)
[Publications] T.Hayashi, M.Terrones, C Scheu, Y.A.Kim, M.Ruhle, T.Nakajima, M.Endo: "Nanoteflons : Structure and EELS characterization of fluorinated carbon nanotubes and nanofibres"Nano Letters. 2・5. 491-493 (2002)
[Publications] M.Endo, Y.A.Kim, Fukai, T.Hayashi, K.Oshida, M.Terrones, T Yanagisawa, S.Higaki, M.S.Dresseihaus: "Structural characterization of cup-stacked type nanofibers with an entire hollow core"Applied Physics Letters. 80・7. 1267-1269 (2002)
[Publications] A.G.Umnov, T.Matsushita, M.Endo, Y.Takeuchi: "Field emission from flexible arrays of carbon nanotubes"Chemical Physics Letters. 356. 391-397 (2002)
[Publications] M.Endo, Y.J.Kim, T.Takeda, Kishii, T.Inoue, T.Maeda, M.S.Dresselhaus: "Structure and Application of Various Saran-Based Carbons Aqueous Electric Double-Layer Capacitors"Journal of The Electrochemical Society. 149・11. 1473-1480 (2002)
[Publications] M.Endo, Y.J.Kim, H.Ohta, K.Ishii, T.Inoue, T.Hayashi, Y Nishimura, T.Maeda, M.S.Dresselhaus: "Morphology and organic EDLC applications of chemically activated AR-Resin based carbons"Carbon. 40・14. 2613-2626 (2002)
[Publications] Y.A.Kim, T.Hayashi, K.Osawa, M.Endo, M.S.Dresselhaus: "Cone-type multi-shell in the hollow core of multi-wall carbon nanotube"Chemical Physics Letters. 367・No.5-6. 537-540 (2002)
[Publications] Y.J.Kim, K.Ishii, T.Inoue, M.Endo, M.S.Dresselhaus, T.Nomura, N.Miyashita: "Structure and EDLC applications PVDC based carbons as a function of carbonization time"Molecular Crystals and Liquid Crystals (MCLC), Proceeding of the 1st international symposium on Nanocarbons. 386. 67-72 (2002)
[Publications] M.Endo: "Tailoring Carbon Nano Structure: Nanocarbons and New Devices"Molecular Crystals and Liquid Crystals (MCLC), Proceeding of the 1st international symposium on Nanocarbons. 386. 159-166 (2000)
[Publications] M.Endo, Y.J.Kim, K.Ishii, T.Inoue, T.Takeda, T.Maeda, T.Nomura, N.Miyashita, M.S.Dresselhaus: "Structure and Application of Various Saran-Based Carbons to Aqueous Electric Double-Layer Capacitors"Journal of The Electrochemical Society. 149・11. A1473-A1480 (2002)
[Publications] K.Osawa, T.Nakazawa, K.Oshida, M.Endo, M.S.Dresselhaus: "Relation between heat-treatment temperature and characteristics of polyparaphenylene(PPP)-based carbon materials for lithium ion secondary batteries"Materials Research Society.Symposium Proceedings. 699. R7.5.1-R7.5.8 (2002)
[Publications] K.Osawa, K.Oshida, T.Havashi, M.Endo: "Heat treatment conditions of ployparaphenylene-based carbon for negative electrode of lithium ion secondary batteries"TANSO2002. 205. 255-259 (2002)
[Publications] M.Endo, Y.J.Kim, K.Ishii, T.Inoue, T.Nomura, N.Miyashita, M.S.Dresselhaus: "Heat treatment retention time dependence of PVDC-based carbons on its application to Electric double layer capacitors"Journal of Materials Research. 18・3. (2003)
[Publications] M.Endo, Y.J.Kim, K.Ishii, T.Inoue, T.Nomura, N.Miyashita, M.S.Dresselhaus: "High capacitance EDLC using a carbon material obtained by carbonization of PVIDC, The Effect of the crystallite size of the pristine PVDC"Electrochemical and Solid-State Letters. 6・2. 1 (2003)
[Publications] Y.A.Kim, T.Hayashi, Y.Fukai, M.Endo, T.Yanagisawa, M.S.Dresselhaus: "Effect of ball milling on morphology of cup-stacked carbon nanotubes"Chemical Physics Letters. 355. 279-284 (2002)
[Publications] T.Hayashi, M.Terrones, C.Scheu, Y.A.Kim M.Ruhle, T.Nakajima, M.Endo: "Nanoteflons Structure and EELS characterization of fluorinated carbon nanotubes and nanofibres"Nano Letters. 2・5. 491-496 (2002)
[Publications] M.Endo, Y.A.KIm, T.Fukai, T.Hayashi, K.Oshida, M.Terrones, T.Yanagisawa, S.Higaki, M.S.Dresselhaus: "Structural characterization of cup-stackeed type nanofibers with an entire hollow core"Applied Physics Letters. 80・7. 1267-1269 (2002)
[Publications] T.Hayashi, Y.A.Kim, Y.Fukai, M Endo, T.Yanagisawa: "HRTEM Observation of ball-milled lampshade carbon nanofiber"Molecular Crystals and Liquid Crystals. 387. 365-368 (2002)
[Publications] K.Oshida, K.Osawa, T.Nakazawa, Y.Fukai, T.Hayashi, M.Endo: "Structural analysis of carbon nanofiber by transmission electron microscopy and image processing"Molecular and Liquid Crystals. 387. 369-374 (2002)
[Publications] K.Osawa, K.Oshida, T.Nakazawa, K.Kashiwagi, S.Yamauchi, M.Endo: "Electrochemical characteristics of polyparaphenylene-based carbon"Molecular and Liquid Crystals. 388. 537-542 (2002)
[Publications] K.Oshida, S.Bonnamy: "Primary Carbonization of an anisotropic "mesophase"pitch compared to conventional isotropic pitch"Carbon. 40・14. 2699-2711 (2002)
[Publications] K.Osawa, T.Nakazawa, K.Oshida, M.Endo, MS.Dresselhaus: "Relation Between Heat-Treatment Temperature and Characteristics of Polyparaphenylene(PPP)-Based Carbon Materials for Lithium Ion Secondary Batteries"Proc.of MRS Fall Meeting 2001. 699. R7.5.1-R7.5.8 (2002)
[Publications] T.Miyazaki, K.Oshida, T.Nakatsuka, H.Yamamoto, M.Okamoto, M.Endo: "Analysis of pore structure of activated carbon by using image processing of TEM images"Molecular Crystals and Liquid Crystals. 388. 499-504 (2002)
[Publications] M.Endo, T.Hayash, Y.A.Kim, H.Ohta, S.H.Hong: "Carbon Alloys, Chapter 3"Novel Concepts to Develop Carbon Science and Technology. 41-55 (2002)
[Publications] M.Endo, Y.A.Kim: "Carbon Alloys, Chapter 5"Novel Concepts to Develop Carbon Science and Technology. 417-432 (2002)
[Publications] M.Endo, Y.A.Kim, T.Hayashi(Eds.E.Osawa): "Structure and Applications, in Perspectives of Fullerene Nanotechnology"Kluwer Academic Publishers. 83-92 (2002)

2002 Fiscal Year Annual Research Report

VGCFを用いた超高熱伝導性C/Cコンポジットの調製と熱電機能の評価

Principal Investigator

遠藤 守信 信州大学, 工学部, 教授 (10021015)

Research Products

[Publications] M.Endo, T.Maeda, T.Takeda, Y.J.Kim, K.Kobayashi, H.Hara, M.S.Dresselhaus: "Capacitance and Pore-Size Distribution in Aqueous and Nonaqueous Electrolytes Using Various Activated Carbon Electrodes"Journal of The Electrochemical Society. 148・8. A910-A914 (2002)

[Publications] Y.A.Kim, T.Havashi, Y.Fukai, M.Endo, T.Yanagisawa, M.S.Dresselhaus: "Effect of ball milling on morphology of cup-stacked carbon nanotubes"Chemical Physics Letters. 355. 279-284 (2002)

[Publications] T.Hayashi, M.Terrones, C Scheu, Y.A.Kim, M.Ruhle, T.Nakajima, M.Endo: "Nanoteflons : Structure and EELS characterization of fluorinated carbon nanotubes and nanofibres"Nano Letters. 2・5. 491-493 (2002)

[Publications] M.Endo, Y.A.Kim, Fukai, T.Hayashi, K.Oshida, M.Terrones, T Yanagisawa, S.Higaki, M.S.Dresseihaus: "Structural characterization of cup-stacked type nanofibers with an entire hollow core"Applied Physics Letters. 80・7. 1267-1269 (2002)

[Publications] A.G.Umnov, T.Matsushita, M.Endo, Y.Takeuchi: "Field emission from flexible arrays of carbon nanotubes"Chemical Physics Letters. 356. 391-397 (2002)

[Publications] M.Endo, Y.J.Kim, T.Takeda, Kishii, T.Inoue, T.Maeda, M.S.Dresselhaus: "Structure and Application of Various Saran-Based Carbons Aqueous Electric Double-Layer Capacitors"Journal of The Electrochemical Society. 149・11. 1473-1480 (2002)

[Publications] M.Endo, Y.J.Kim, H.Ohta, K.Ishii, T.Inoue, T.Hayashi, Y Nishimura, T.Maeda, M.S.Dresselhaus: "Morphology and organic EDLC applications of chemically activated AR-Resin based carbons"Carbon. 40・14. 2613-2626 (2002)

[Publications] Y.A.Kim, T.Hayashi, K.Osawa, M.Endo, M.S.Dresselhaus: "Cone-type multi-shell in the hollow core of multi-wall carbon nanotube"Chemical Physics Letters. 367・No.5-6. 537-540 (2002)

[Publications] M.Endo: "Tailoring Carbon Nano Structure: Nanocarbons and New Devices"Molecular Crystals and Liquid Crystals (MCLC), Proceeding of the 1st international symposium on Nanocarbons. 386. 159-166 (2000)

[Publications] M.Endo, Y.J.Kim, K.Ishii, T.Inoue, T.Takeda, T.Maeda, T.Nomura, N.Miyashita, M.S.Dresselhaus: "Structure and Application of Various Saran-Based Carbons to Aqueous Electric Double-Layer Capacitors"Journal of The Electrochemical Society. 149・11. A1473-A1480 (2002)

[Publications] K.Osawa, T.Nakazawa, K.Oshida, M.Endo, M.S.Dresselhaus: "Relation between heat-treatment temperature and characteristics of polyparaphenylene(PPP)-based carbon materials for lithium ion secondary batteries"Materials Research Society.Symposium Proceedings. 699. R7.5.1-R7.5.8 (2002)

[Publications] K.Osawa, K.Oshida, T.Havashi, M.Endo: "Heat treatment conditions of ployparaphenylene-based carbon for negative electrode of lithium ion secondary batteries"TANSO2002. 205. 255-259 (2002)

[Publications] M.Endo, Y.J.Kim, K.Ishii, T.Inoue, T.Nomura, N.Miyashita, M.S.Dresselhaus: "Heat treatment retention time dependence of PVDC-based carbons on its application to Electric double layer capacitors"Journal of Materials Research. 18・3. (2003)

[Publications] M.Endo, Y.J.Kim, K.Ishii, T.Inoue, T.Nomura, N.Miyashita, M.S.Dresselhaus: "High capacitance EDLC using a carbon material obtained by carbonization of PVIDC, The Effect of the crystallite size of the pristine PVDC"Electrochemical and Solid-State Letters. 6・2. 1 (2003)

[Publications] Y.A.Kim, T.Hayashi, Y.Fukai, M.Endo, T.Yanagisawa, M.S.Dresselhaus: "Effect of ball milling on morphology of cup-stacked carbon nanotubes"Chemical Physics Letters. 355. 279-284 (2002)

[Publications] T.Hayashi, M.Terrones, C.Scheu, Y.A.Kim M.Ruhle, T.Nakajima, M.Endo: "Nanoteflons Structure and EELS characterization of fluorinated carbon nanotubes and nanofibres"Nano Letters. 2・5. 491-496 (2002)

[Publications] M.Endo, Y.A.KIm, T.Fukai, T.Hayashi, K.Oshida, M.Terrones, T.Yanagisawa, S.Higaki, M.S.Dresselhaus: "Structural characterization of cup-stackeed type nanofibers with an entire hollow core"Applied Physics Letters. 80・7. 1267-1269 (2002)

[Publications] T.Hayashi, Y.A.Kim, Y.Fukai, M Endo, T.Yanagisawa: "HRTEM Observation of ball-milled lampshade carbon nanofiber"Molecular Crystals and Liquid Crystals. 387. 365-368 (2002)

[Publications] K.Oshida, K.Osawa, T.Nakazawa, Y.Fukai, T.Hayashi, M.Endo: "Structural analysis of carbon nanofiber by transmission electron microscopy and image processing"Molecular and Liquid Crystals. 387. 369-374 (2002)

[Publications] K.Osawa, K.Oshida, T.Nakazawa, K.Kashiwagi, S.Yamauchi, M.Endo: "Electrochemical characteristics of polyparaphenylene-based carbon"Molecular and Liquid Crystals. 388. 537-542 (2002)

[Publications] K.Oshida, S.Bonnamy: "Primary Carbonization of an anisotropic "mesophase"pitch compared to conventional isotropic pitch"Carbon. 40・14. 2699-2711 (2002)

[Publications] K.Osawa, T.Nakazawa, K.Oshida, M.Endo, MS.Dresselhaus: "Relation Between Heat-Treatment Temperature and Characteristics of Polyparaphenylene(PPP)-Based Carbon Materials for Lithium Ion Secondary Batteries"Proc.of MRS Fall Meeting 2001. 699. R7.5.1-R7.5.8 (2002)

[Publications] T.Miyazaki, K.Oshida, T.Nakatsuka, H.Yamamoto, M.Okamoto, M.Endo: "Analysis of pore structure of activated carbon by using image processing of TEM images"Molecular Crystals and Liquid Crystals. 388. 499-504 (2002)

[Publications] M.Endo, T.Hayash, Y.A.Kim, H.Ohta, S.H.Hong: "Carbon Alloys, Chapter 3"Novel Concepts to Develop Carbon Science and Technology. 41-55 (2002)

[Publications] M.Endo, Y.A.Kim: "Carbon Alloys, Chapter 5"Novel Concepts to Develop Carbon Science and Technology. 417-432 (2002)

[Publications] M.Endo, Y.A.Kim, T.Hayashi(Eds.E.Osawa): "Structure and Applications, in Perspectives of Fullerene Nanotechnology"Kluwer Academic Publishers. 83-92 (2002)

遠藤守信信州大学, 工学部, 教授 (10021015)