Hybrid Superelastic Metal-Metal Sulfide Materials for Current Collector and Anode of Battery
The present invention relates to a hybrid superelastic metal-metal sulfide materials for current collector and anode of battery, which use two phase alloy of Ti—Ni or three phase alloy of Ti—Ni—X as current collector, and produce a Ti, Ni sulfide at a surface of current collector with an inside sulfide method to allow to use as an active materials of positive electrode, and perform a role of current collector and anode of battery with one material by endowing all materials with superelastic characteristic, and it have an excellent effect providing a hybrid superelastic metal-metal sulfide materials for current collector and anode having thin plate and fine wire shape.
The present invention relates to a hybrid superelastic metal-metal sulfide materials for current collector and anode of battery, more precisely a hybrid sulfide materials for current collector and anode which use a plate materials and wire materials of Ti—Ni superelastic alloy as current collector, and produce a Ti, Ni sulfide at a surface of current collector to allow to use as an active materials of positive electrode, and perform a role of current collector and anode of battery with one material by endowing all materials with superelastic characteristic, and have a thin plate and fine wire shape.
BACKGROUND ARTConventional battery is generally consisted of cathode, anode, electrolyte, and current collector. Current collector plays role collecting electricity produced from battery during discharging. Reducing reaction is generated at anode by an electron produced from cathode. Copper (Cu), stainless steel and the like are used as current collector, and metal oxide, sulfide, hydroxide and the like are used as anode by now.
At conventional battery, current collector is generated a plasticity change according to change of battery pattern. There is characteristic that a flexible battery whose use spectrum is expanded in recent is able to exchange its form according to a purpose of use.
However, when using conventional current collector, processing hardening is occurred by generating a plasticity change according to repeated change of form so that hardening and breakage of current collector are generated.
Therefore, the present invention is proposed under consideration of the above-described drawback for conventional current collector, and is achieved by producing a hybrid superelastic metal-metal sulfide materials for current collector and anode for battery of a thin plate and fine wire shape having superelastic characteristic which use two phase alloy of Ti—Ni or three phase alloy of Ti—Ni—X having superelastic characteristic as current collector, thereby producing a Ti and Ni sulfide at a surface of current collector to allow to remove stress after deformity of current collector and anode and return to its initial form.
DISCLOSURE OF THE INVENTION Technical ProblemThe object of the present invention is to provide a hybrid superelastic metal-metal sulfide material for current collector and anode of battery.
Technical SolutionThe above-mentioned object of the present invention can be achieved by providing a hybrid superelastic metal-metal sulfide materials for current collector and anode for battery of a thin plate and fine wire shape having superelastic characteristic which use two phase alloy of Ti—Ni or three phase alloy of Ti—Ni—X having superelastic characteristic as current collector, thereby producing a Ti and Ni sulfide at a surface of current collector to allow to remove stress after deformity of current collector and anode and return to its initial form.
DESCRIPTION OF DRAWINGSOther objects and aspects of the present invention will become apparent from the following description of embodiments with reference to the accompanying drawing in which:
The present invention will be described in detail by preferable embodiments with reference to the accompanying drawing as the following description.
The present invention is characterized in that it provide a hybrid superelastic metal-metal sulfide materials for current collector and anode for battery having superelastic characteristic which use two phase alloy of Ti—Ni or three phase alloy of Ti—Ni—X having superelastic characteristic as current collector, thereby producing a Ti and Ni sulfide at a surface of current collector to allow to remove stress after deformity of current collector and anode and return to its initial form.
In the present invention, a hybrid superelastic metal-metal sulfide material for current collector and anode for battery can be produced with a thin plate or fine wire shape according to its usage.
Concrete structure and effects of the present invention will be described in detail with reference to the accompanying drawing.
A superelastic effect means phenomenon that stress is added to material at mother phase state of high temperature to produce stress organic martensite so that material is deformed, and then it is returned to original shape with removing stress.
The above-described superelastic effect is obtained at two phase alloy of Ti—Ni as well as three phase alloy of Ti—Ni—X.
In two phase alloy of Ti—Ni, concentration of Ti is in range of 48.0-52.0 atom %, and concentration of Ni is in range of 48.0-52.0 atom %.
In three phase alloy of Ti—Ni—X, concentration of Ti is in range of 48.0-52.0 atom %, and concentration of Ni is in range of 23.0-51.95 atom %, and X is any one selected from a group consisted of iron (Fe) of 0.1-2.0 atom %, aluminum (Al) of 0.1-2.0 atom %, molybdenum (Mo) of 0.1-2.5 atom %, cobalt (Co) of 0.05-1.5 atom %, chromium (Cr) of 0.05-1.5 atom %, vanadium (V) of 0.1-2.5 atom %, copper (Cu) of 1.0-25.0 atom %, manganese (Mn) of 0.05-1.5 atom %, hafnium (Hf) of 1.0-25.0 atom %, and zirconium (Zr) of 1.0-25.0 atom %.
If concentration of each atom is departed from the above range, there is no superelastic effect.
The present invention relates to a hybrid superelastic metal-metal sulfide materials for current collector and anode of battery, and is very useful in electric and electronic industry since it is provide a hybrid superelastic metal-metal sulfide materials for current collector and anode for battery of a thin plate and fine wire shape which use two phase alloy of Ti—Ni or three phase alloy of Ti—Ni—X having superelastic characteristic as current collector, thereby producing a Ti and Ni sulfide at a surface of current collector to allow to remove stress after deformity of current collector and anode and return to its initial form.
Claims
1. A hybrid superelastic metal-metal sulfide materials for current collector and anode of battery which use two phase alloy of Ti—Ni or three phase alloy of Ti—Ni—X as current collector, and produce a Ti, Ni sulfide at a surface of current collector with an inside sulfide method to allow to use as an active materials of positive electrode, and perform a role of current collector and anode of battery with one material by endowing all materials with superelastic characteristic.
2. A hybrid superelastic metal-metal sulfide materials for current collector and anode of battery of the above claim 1, wherein in the above three phase alloy of Ti—Ni—X, concentration of Ti is in range of 48.0-52.0 atom %, and concentration of Ni is in range of 23.0-51.95 atom %, and X is any one selected from a group consisted of iron (Fe) of 0.1-2.0 atom %, aluminum (Al) of 0.1-2.0 atom %, molybdenum (Mo) of 0.1-2.5 atom %, cobalt (Co) of 0.05-1.5 atom %, chromium (Cr) of 0.05-1.5 atom %, vanadium (V) of 0.1-2.5 atom %, copper (Cu) of 1.0-25.0 atom %, manganese (Mn) of 0.05-1.5 atom %, hafnium (Hf) of 1.0-25.0 atom %, and zirconium (Zr) of 1.0-25.0 atom %.
3. A hybrid superelastic metal-metal sulfide materials for current collector and anode of battery of the above claim 1, wherein the above materials is produced with a thin plate or fine wire shape.
4. A hybrid superelastic metal-metal sulfide materials for current collector and anode of battery of the above claim 1, wherein the above inside sulfide method is that a vaporized sulfur is contacted to the above surface of current collector and then it is heated at 400-700° C. for 1-30 hours.
Type: Application
Filed: Jul 15, 2004
Publication Date: Mar 20, 2008
Inventors: Tae-Hyun Nam (Gyeongsangnam-do), Hyo-Jun Ahn (Gyeongsangnam-do), Ki-Won Kim (Gyeongsangnam-do), Kwon-Koo Cho (Gyeongsangnam-do), Jou-Hyeon Ahn (Gyeongsangnam-do), Su-Mun Park (Gyeongsangnam-do), Hwi-Beom Shin (Gyeongsangnam-do), Hyun-Chil Choi (Busan), Jong-Uk Kim (Jeollabuk-do), Gyu-Bong Cho (Gyeongsangnam-do)
Application Number: 11/629,465
International Classification: C22C 14/00 (20060101); C22C 19/03 (20060101); C22C 19/05 (20060101);