3 0 0 0 OA 地球の誕生にともなう炭素の話
- 著者
- 夏目 勇
- 出版者
- 炭素材料学会
- 雑誌
- 炭素 (ISSN:03715345)
- 巻号頁・発行日
- vol.2002, no.202, pp.96-100, 2002-05-15 (Released:2010-06-28)
- 参考文献数
- 34
2 0 0 0 OA Q&A
- 著者
- 吉田 充
- 出版者
- 炭素材料学会
- 雑誌
- 炭素 (ISSN:03715345)
- 巻号頁・発行日
- vol.1995, no.169, pp.235-235, 1995-11-27 (Released:2010-06-28)
- 被引用文献数
- 13
2 0 0 0 グラフェンの製造技術と加工技術
2 0 0 0 OA ナノカーボンの共鴫ラマン分光
- 著者
- 齋藤 理一郎
- 出版者
- 炭素材料学会
- 雑誌
- 炭素 (ISSN:03715345)
- 巻号頁・発行日
- vol.2002, no.205, pp.276-283, 2002-12-20 (Released:2010-06-28)
- 参考文献数
- 20
- 被引用文献数
- 2 5
Carbon nanotubes and nano-graphite are called as nano-carbons made of graphene skeleton. Resonant Raman spectroscopy is a powerful tool to investigate the special electronic and phonon structures of nano-carbons. Although Raman spectroscopy has been used for characterizing carbon materials for long years, the origin of some weak Raman spectra is not always clearly understood. The recent progress of Raman spectroscopy has provided a new concept such as double resonance Raman theory for the undefined spectra observed not only in nano-carbon but also in conventional carbon materials. Especially single nanotube spectroscopy becomes a standard technique in which we measure with no-contact, at room-temperature and ambient pressure.
1 0 0 0 OA ブラシの摩耗について
1 0 0 0 OA 黒鉛の異方性の評価
1 0 0 0 2015年 新年の挨拶
- 著者
- 川口 雅之
- 出版者
- 炭素材料学会
- 雑誌
- 炭素 (ISSN:03715345)
- 巻号頁・発行日
- vol.2015, no.266, pp.1, 2015
1 0 0 0 OA 炭素材料の結晶性ならびに配向関数と磁気抵抗との関係
- 著者
- 菱山 幸宥 鏑木 裕 稲垣 道夫
- 出版者
- 炭素材料学会
- 雑誌
- 炭素 (ISSN:03715345)
- 巻号頁・発行日
- vol.2011, no.249, pp.195-212, 2011-09-01 (Released:2011-09-22)
- 参考文献数
- 24
- 被引用文献数
- 1 2
The relation of crystallinity and preferred orientation parameters to the magnetoresistance of carbon materials was examined. We derived the parameters for carbon samples having a planar orientation with the electric current flowing along the direction perpendicular to the orientation symmetry axis and for those having an axial orientation along the direction parallel to the orientation symmetry axis. On the basis of the magnetoresistance data on carbon materials, including pyrolytic carbons, carbon films, cokes, carbon fibers, etc., the formulae of orientation functions for planar and axial orientations were derived. The I3/I1 value derived from the orientation function is proposed as the parameter for preferred orientation in carbon materials, which changes in the range 0–2/3 for the planar orientation, 2/3 for random and point orientations and in the range 2/3–1 for the axial orientation. The parameter [Equation] shows a good correspondence to interlayer spacing d002 for all carbon materials used, which is useful to differentiate the crystallinity of highly graphitized materials.
1 0 0 0 炭素材料が電池負極になるまで
- 著者
- 吉野 彰
- 出版者
- 炭素材料学会
- 雑誌
- 炭素 (ISSN:03715345)
- 巻号頁・発行日
- vol.1999, no.186, pp.45-49, 1999
- 被引用文献数
- 3
Development of lithium ion battery is reviewed. Lithium ion battery has been used widely for note book personalcomputers, cellular phones and other applications. Annual sales amounts have reached to about 200 billion yens in 19<BR>This new battery system was found in 1984 by Asahi Chemical Co. Extensive work has been carried out to improvecarbonaceous material for negative electrode.<BR>By this improvement, discharge capacity of lithium ion battery (Cylindrical Type 18650) has been increasedfrom 920mAh to 1600mAh in these 5 years. Future trend of technology is also reviewed.
1 0 0 0 OA 炭素の生成 (炭化)
1 0 0 0 OA 炭素繊維強化炭素複合材料
1 0 0 0 縮合多環多核芳香族 (COPNA) 樹脂の炭素化挙動
- 著者
- 大谷 杉郎 子洪 〓 太田 悦郎
- 出版者
- 炭素材料学会
- 雑誌
- 炭素 (ISSN:03715345)
- 巻号頁・発行日
- vol.1986, no.127, pp.162-170, 1986
- 被引用文献数
- 6
Thermosetting resins named COPNA resin were prepared by heating polycondenced armotic compounds (Aro) with 1, 4-benzenedimethanol (PXG) and p-toluensulfonic acid as a catalyst. Aro used were pyrene/phenanthrene (7/3 in molar ratio) mixture (PP), napth-alene and coal-tar pitch. The COPNA resins were heat-treated between 200 and 2500°C to examine their carbonization behaviors. Major/results obtained are:<BR>(1) The COPNA resins derived from PP or naphtalene with an amount of PXG above 1.0 in PXG/Aro molar ratio decomposed first thermally around 450°C. Thus, the methylene bridges in the COPNA resins were broken down around 450°C. The pitch-based COPNA resin exhibited the weight loss over a wider temperature range.<BR>(2) Carbon yields from the COPNA resins increased with both increasing, molecular weight of raw Aro and the cross-linkage density. They were 38 and 60 wt% for the naphthalene (PXG/Aro=1.25 in molar ratio) based-and the pitch (PXG/Aro=2.0 in molar ratio) based-COPNA resins respectively. The PP-based one showed an intermediate value between them.<BR>(3) The COPNA resins after heating to 2500°C gave X-ray parameters corresponding to those for the non-graphitizable carbon. hitizability of those resins improved with the increasing molecular weight of Aro and/or the decreasing molecular ratio of PXG/Aro.
1 0 0 0 黒鉛電極/電解液界面における電気化学反応に関する研究
- 著者
- 山田 裕貴
- 出版者
- 炭素材料学会
- 雑誌
- 炭素 = Carbons (ISSN:03715345)
- 巻号頁・発行日
- no.248, pp.154-155, 2011-06-15
- 参考文献数
- 6
- 被引用文献数
- 1
黒鉛電極はその異方性構造により独特の電気化学挙動を示すことが知られている。例えば,黒鉛電極における電気二重層容量やヘテロ電子移動反応速度は金属電極のものとはまったく異なるが,これまで黒鉛の電気化学に特化した基礎研究が広く行われ理論的な説明がなされつつある。一方で,電気化学的手法により層間にイオンを挿入することができる点も黒鉛電極の特徴の1つである。しかし,このような反応が広く研究されるようになったのはリチウムイオン電池の実用化後であるため,その反応機構に関する基礎研究は不十分である。<br>本論文は,リチウムイオン電池の負極材料として用いられている黒鉛と電解液の界面における電気化学反応の機構および速度論に関する研究成果をまとめたもので,序論および3部7章で構成されている。第1部(第1章,第2章)では,種々の有機電解液中における黒鉛電極の電気化学特性を調べることにより,黒鉛電極へのリチウムイオン挿入反応の可否を決定する要因について議論した。第2部(第3章~第5章)では,黒鉛電極への電気化学的リチウムイオン挿入反応の活性化エネルギーを調べ,その決定要因を明らかにすることで,反応速度について議論した。第3部(第6章,第7章)では,黒鉛電極の電気化学的リチウム挿入反応サイト数について調べることにより,黒鉛電極/電解液界面におけるリチウムイオン挿入脱離反応の速度に影響を与える頻度因子項について議論した。
1 0 0 0 OA カーボンブラックの沿革と技術上の諸問題
- 著者
- 中原 乾二
- 出版者
- 炭素材料学会
- 雑誌
- 炭素 (ISSN:03715345)
- 巻号頁・発行日
- vol.1964, no.38, pp.6-8, 1964-06-25 (Released:2010-06-28)
1 0 0 0 OA 通信機用炭素系抵抗器について (その2)
1 0 0 0 OA 炭素材料の強度と破壊靱性の試験
1 0 0 0 OA カルビンの合成と構造
- 著者
- 山田 能生 稲垣 道夫
- 出版者
- 炭素材料学会
- 雑誌
- 炭素 (ISSN:03715345)
- 巻号頁・発行日
- vol.1997, no.178, pp.122-127, 1997-07-30 (Released:2011-07-05)
- 参考文献数
- 35
- 被引用文献数
- 1 7
Synthesis and structure of carbyne were reviewed. Its synthesis was classified into physical and chemical methods. The relations to other carbon allotropes, diamond, graphite and fullerens were also discussed.
1 0 0 0 OA 黒鉛負極上皮膜生成の電気化学AFMによる観察
- 著者
- 山口 祥司
- 出版者
- 炭素材料学会
- 雑誌
- 炭素 (ISSN:03715345)
- 巻号頁・発行日
- vol.1999, no.186, pp.39-44, 1999-02-28 (Released:2010-06-28)
- 参考文献数
- 47
- 被引用文献数
- 1 5
Solid Electrolyte Interphase (SEI) films play an important role in lithium ion battery. SEI films form ongraphite anode surfaces during early lithium intercalation process. SEI films prevent further solvent decompositionduring charge and discharge in the battery. Morphological study of SEI film formation is very important to understandthe function of SEI film in lithium ion battery system. Simultaneous in-situ electrochemical Atomic Force Microscopy (AFM) and Friction Force Microscopy (FFM) were successfully introduced to monitor SEI film formation in realtime. Topographic and frictional changes on the surface of a Highly Oriented Pyrolytic Graphite (HOPG) electrodein 1 mol/dm3 LiClO4 EC/EMC (1:1) electrolyte were examined during charge and discharge. SEI film formationcommenced at approximately 2V vs. Li/Li+ and stable film formation with an island-like morphology was observedbelow approximately 0.9V vs. Li/Li+. Further experiments on a composite electrode made of synthetic graphite powderand polyvinylidene difluoride (PVDF) binder showed similar phenomena.