Titanium oxide-based supercapacitor electrode material and method of manufacturing same
First Claim
1. A titanium oxide-based supercapacitor electrode material, comprising a conductive titanium oxide as an active substance, wherein the conductive titanium oxide is selected from the group consisting of titanium sub-oxide, reduced titanium dioxide, and doped reduced titanium dioxide, a whole or a surface of the titanium sub-oxide, the reduced titanium dioxide, or the doped reduced titanium dioxide having amorphous layers comprising defect structures and activated Ti3+;
- and the titanium oxide-based supercapacitor electrode material has a density of charge carrier higher than 1018 cm−
3, and a specific capacitance in a range of 20 F/g˜
1,740 F/g, under a charge-discharge current of 1 A/g; and
the titanium sub-oxide, the reduced titanium dioxide, or the doped reduced titanium dioxide is prepared by a step of performing a high surface reduction treatment on titanium dioxide to obtain the titanium sub-oxide or the reduced titanium dioxide, or by a step of performing the high surface reduction treatment and a doping treatment on titanium dioxide to obtain the doped reduced titanium dioxide;
wherein the high surface reduction treatment is performed at 200˜
500°
C. for 2˜
12 hours.
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Abstract
A titanium oxide-based supercapacitor electrode material and a method of manufacturing same. A reactive substance of the titanium oxide-based supercapacitor electrode material is a conductive titanium oxide. The conductive titanium oxide is a sub-stoichiometric titanium oxide, reduced titanium dioxide, or doped reduced titanium dioxide obtained by further doping an element in reduced titanium dioxide. The titanium oxide-based supercapacitor electrode material has a carrier concentration greater than 1018 cm−3, and the titanium oxide-based supercapacitor electrode material has a specific capacitance 20 F/g to 1,740 F/g at a charge/discharge current of 1 A/g.
14 Citations
22 Claims
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1. A titanium oxide-based supercapacitor electrode material, comprising a conductive titanium oxide as an active substance, wherein the conductive titanium oxide is selected from the group consisting of titanium sub-oxide, reduced titanium dioxide, and doped reduced titanium dioxide, a whole or a surface of the titanium sub-oxide, the reduced titanium dioxide, or the doped reduced titanium dioxide having amorphous layers comprising defect structures and activated Ti3+;
- and the titanium oxide-based supercapacitor electrode material has a density of charge carrier higher than 1018 cm−
3, and a specific capacitance in a range of 20 F/g˜
1,740 F/g, under a charge-discharge current of 1 A/g; and
the titanium sub-oxide, the reduced titanium dioxide, or the doped reduced titanium dioxide is prepared by a step of performing a high surface reduction treatment on titanium dioxide to obtain the titanium sub-oxide or the reduced titanium dioxide, or by a step of performing the high surface reduction treatment and a doping treatment on titanium dioxide to obtain the doped reduced titanium dioxide;
wherein the high surface reduction treatment is performed at 200˜
500°
C. for 2˜
12 hours. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
- and the titanium oxide-based supercapacitor electrode material has a density of charge carrier higher than 1018 cm−
Specification