Abstract: A method for making a carbon material for an anode of a lithium-ion secondary battery includes a sequence of: a) heating a heavy hydrocarbon oil to obtain a green coke, b) a heating the green coke to form a carbon-containing material, c) grinding the carbon-containing material into a powder, and collecting a portion of the powder, d) heating the portion of the powder to obtain a carbonaceous powder, and e) adding pitch to the carbonaceous powder and heating the pitch-contained carbonaceous powder. A lithium-ion secondary battery, which includes the anode having the carbon material, is also disclosed.

Abstract: A method of preparing a soft carbon material for high-voltage supercapacitors includes: providing an initial soft carbon material characterized by: (A) a first carbon layer spacing greater than 0.345 nm but less than 0.360 nm; (B) a crystal plane (002) with a length (Lc) less than 6 nm; (C) a crystal plane (101) with a length (La) less than 6 nm; and (D) an intensity ratio (I(002)/I(101)) of the crystal plane (002) to the crystal plane (101) obtained by XRD analysis being less than 60; performing an alkaline activation on the initial soft carbon material with an alkaline activator to obtain a first processing carbon material; and performing an electrochemical activation on the first processing carbon material with an electrolyte to obtain the soft carbon material for the high-voltage supercapacitors.

Abstract: A method for making a soft carbon includes providing a coke, and subjecting the coke to a carbonization process. The carbonization process includes a preliminary calcination treatment conducted by calcining the coke at a first temperature ranging from 800° C. to 1000° C. to obtain a pre-calcinated coke, followed by a main calcination treatment conducted by calcining the pre-calcinated coke at a second temperature ranging from 1000° C. to 1200° C., and/or a surface-modifying calcination treatment conducted by calcining the pre-calcinated coke in the presence of a carbonaceous material for modifying surfaces thereof at a third temperature ranging from 1000° C. to 1200° C. A soft carbon made by the method is also disclosed.

Abstract: A method for preparing artificial graphite includes (A) preparing heavy oil, and forming coke from the heavy oil through continuous coking reaction such that the coke has a plurality of mesophase domains, wherein a size of the mesophase domains ranges between 1 and 30 ?m by polarizing microscope analysis; and (B) processing the coke formed by step (A) sequentially by pre-burning carbonization treatment, grinding classification, high-temperature carbonization treatment and graphitization treatment to form polycrystalline artificial graphite from the coke. The method for preparing artificial graphite of the present invention and the polycrystalline artificial graphite prepared thereby are applicable to batteries.

Abstract: A method for preparing artificial graphite includes (A) preparing heavy oil, and forming coke from the heavy oil through continuous coking reaction such that the coke has a plurality of mesophase domains, wherein a size of the mesophase domains ranges between 1 and 30 ?m by polarizing microscope analysis; and (B) processing the coke formed by step (A) sequentially by pre-burning carbonization treatment, grinding classification, high-temperature carbonization treatment and graphitization treatment to form polycrystalline artificial graphite from the coke. The method for preparing artificial graphite of the present invention and the polycrystalline artificial graphite prepared thereby are applicable to batteries.

Abstract: A method of preparing a soft carbon material for high-voltage supercapacitors includes: providing an initial soft carbon material characterized by: (A) a first carbon layer spacing greater than 0.345 nm but less than 0.360 nm; (B) a crystal plane (002) with a length (Lc) less than 6 nm; (C) a crystal plane (101) with a length (La) less than 6 nm; and (D) an intensity ratio (I(002)/I(101)) of the crystal plane (002) to the crystal plane (101) obtained by XRD analysis being less than 60; performing an alkaline activation on the initial soft carbon material with an alkaline activator to obtain a first processing carbon material; and performing an electrochemical activation on the first processing carbon material with an electrolyte to obtain the soft carbon material for the high-voltage supercapacitors.

Abstract: A method for making a soft carbon includes providing a coke, and subjecting the coke to a carbonization process. The carbonization process includes a preliminary calcination treatment conducted by calcining the coke at a first temperature ranging from 800° C. to 1000° C. to obtain a pre-calcinated coke, followed by a main calcination treatment conducted by calcining the pre-calcinated coke at a second temperature ranging from 1000° C. to 1200° C., and/or a surface-modifying calcination treatment conducted by calcining the pre-calcinated coke in the presence of a carbonaceous material for modifying surfaces thereof at a third temperature ranging from 1000° C. to 1200° C. A soft carbon made by the method is also disclosed.

Abstract: The present invention relates to a display device having a plurality of sub-pixels wherein at least one of the sub-pixels has at least one reflection area and at least two transmission areas, comprising: a first substrate; a first electrode layer disposed over the first substrate; a second substrate; a second electrode layer disposed over the second substrate; a liquid crystal layer interposed between the first substrate and the second substrate; and a protrusion unit disposed on the second substrate; wherein the protrusion unit is disposed correspondingly to the reflection area, and the reflection area is interposed between the transmission areas.