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石墨烯(Graphene)是一種由石磨剝離出的單層石磨材料,2004年由英國曼徹斯特大學物理學家Andre GeimKonstantin Novoselov成功分離出,確定其能單獨穩定存在,並因此在2010年共同獲得諾貝爾獎。

石墨烯,由碳原子以sp2混層軌域組成的六角形風潮晶格平面薄膜,厚度僅止一個碳原子直徑,0.335 nm,為目前世界上最薄卻堅硬的奈米材料,大小隨溫度升高而縮小,與任何其他物質的熱脹冷縮的性質不同;石墨烯兼具金屬和半導體的性質,如一般目前常用的半導體材料,可以摻入不同的氣體,形成n-型或p-型的半導體,若加熱可以去除其摻入的氣體,回復原來的石墨烯。其理論之物理特性如下:

導熱系數 : 5300 W/m•K(比奈米碳管和金鋼石好)

電子遷移率(electron mobility) : 15000 cm2/V•s以上

電阻 : 10 6 Ω•cm (是目前所有已知材料在室溫下具最低電阻的材料,導電密度是銅的一百萬倍)

商品介紹

 石墨烯 Graphene  

Research Grade Few-layers Graphene(FLG)

Product

Log. No

Specific physical properties

price

FLG1B8-22

FLG101B8-22

Purity: 99.0%

Specific weight: ~0.03

Appearance: blackly, weightlessly and finely cotton-like powder.

Oxygen Content: 22.84 ± 3.38 wt%

Thickness: < 10 nm (minimum: ~ 1 nm, layer number:2 ~ 7layers)

Dimension length(X&Y or Diameter): 5~10 μm

Electrical conductivity of FLG pallet with a thickness about 200 μm: ~ 38.9 S/cm

Inquiry

FLG1W8-29

FLG101W8-29

Purity: 99.0%

Specific weight: ~0.03

Appearance: blackly, weightlessly and finely cotton-like powder.

Oxygen Content: 29.91 ± 2.34 wt%

Thickness: < 10 nm (minimum: ~ 1 nm, layer number:2 ~ 7layers)

Dimension length(X&Y or Diameter): 5~10 μm

Electrical conductivity of FLG pallet with a thickness about 200 μm: ~ 46.6 S/cm

Inquiry

FLG158-18

FLG10158-15

Purity: 99.0%

Specific weight: ~0.03

Appearance: blackly, weightlessly and finely cotton-like powder.

Oxygen Content: 14.79 ± 2.02 wt%

Thickness: < 10 nm (minimum: ~ 1 nm, layer number:2 ~ 7layers)

Dimension length(X&Y or Diameter): 5~10 μm

Electrical conductivity of FLG pallet with a thickness about 200 μm: ~ 56 S/cm

Inquiry

 

Referance Data of Research Grade Few-Layers Graphene

R1. X-ray Diffraction Spectrum of used Natural Graphite, Graphite Oxide, FLG:

R2. Scanning Electron Microscopy(SEM) image:

https://fs1.shop123.com.tw/200352/upload/harddisc/200352540_file_318654.jpg

https://fs1.shop123.com.tw/200352/upload/harddisc/200352541_file_781092.png

R3. Transition Electron Microscopy(TEM) image:

R4. Atomic Forced Microscopoy(AFM) image

https://fs1.shop123.com.tw/200352/upload/harddisc/200352542_file_899249.jpg

https://fs1.shop123.com.tw/200352/upload/harddisc/200352543_file_275166.png

R5. X-ray Photoelectron Spectroscopy:

R6. Ramman Spectra

https://fs1.shop123.com.tw/200352/upload/harddisc/200352544_file_379456.png

https://fs1.shop123.com.tw/200352/upload/harddisc/200352545_file_405538.png