CN107523737A - A kind of vehicle-mounted energy storage hydrogen bearing alloy - Google Patents
A kind of vehicle-mounted energy storage hydrogen bearing alloy Download PDFInfo
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- CN107523737A CN107523737A CN201710782764.4A CN201710782764A CN107523737A CN 107523737 A CN107523737 A CN 107523737A CN 201710782764 A CN201710782764 A CN 201710782764A CN 107523737 A CN107523737 A CN 107523737A
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 121
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 121
- 239000001996 bearing alloy Substances 0.000 title claims abstract description 62
- 125000004435 hydrogen atom Chemical group [H]* 0.000 title claims abstract description 62
- 238000004146 energy storage Methods 0.000 title claims description 13
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 54
- 239000000956 alloy Substances 0.000 claims abstract description 35
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 34
- 238000003860 storage Methods 0.000 claims abstract description 18
- 230000005415 magnetization Effects 0.000 claims abstract description 8
- 239000000047 product Substances 0.000 claims description 28
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 238000010791 quenching Methods 0.000 claims description 15
- 239000002994 raw material Substances 0.000 claims description 13
- 229910052786 argon Inorganic materials 0.000 claims description 12
- 239000007789 gas Substances 0.000 claims description 12
- 230000000171 quenching effect Effects 0.000 claims description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 238000005266 casting Methods 0.000 claims description 10
- 230000004087 circulation Effects 0.000 claims description 8
- 230000006641 stabilisation Effects 0.000 claims description 7
- 238000011105 stabilization Methods 0.000 claims description 7
- 239000013589 supplement Substances 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 15
- 230000008859 change Effects 0.000 abstract description 8
- 239000000203 mixture Substances 0.000 abstract description 8
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 238000012545 processing Methods 0.000 abstract description 5
- 239000011777 magnesium Substances 0.000 description 14
- 239000000126 substance Substances 0.000 description 7
- 229910052749 magnesium Inorganic materials 0.000 description 6
- 239000000446 fuel Substances 0.000 description 5
- 150000002431 hydrogen Chemical class 0.000 description 5
- 239000011232 storage material Substances 0.000 description 5
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000005275 alloying Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 230000005518 electrochemistry Effects 0.000 description 2
- 150000004678 hydrides Chemical class 0.000 description 2
- 230000003137 locomotive effect Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910000905 alloy phase Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 150000004681 metal hydrides Chemical class 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Fuel Cell (AREA)
- Hydrogen, Water And Hydrids (AREA)
Abstract
The present invention makes the crystalline texture of alloy change, the finished product of acquisition has AB by the composition adjustment and Technology for Heating Processing to hydrogen bearing alloy2Structure and A5B19The component ratio sum of structure is more than 40% characteristic, due to AB2And A5B19Type hydrogen storage alloy have the characteristics that discharge capacity is high, have extended cycle life with it is easily-activated, so as to ensure that hydrogen bearing alloy finished product of the present invention can possess the discharge capacity bigger than prior art products and hydrogen storage content, and inhale/put hydrogen capacity conservation rate and remanent magnetization performance is also very excellent.
Description
Technical field
This patent is related to field of alloy material, is to be related to a kind of vehicle-mounted energy storage hydrogen bearing alloy specifically.
Background technology
At present, China Auto Market is undergoing a change from traditional power automobile to new-energy automobile.Main flow
New-energy automobile technology be based on electric vehicle engineering, electric automobile can be divided into hybrid vehicle, pure electric automobile and
Fuel cell car.Wherein hybrid vehicle is optimized and reformed on the basis of traditional diesel locomotive, internal combustion
Machine technology and motor technology are organically combined together, and make automobile meet people to oil consumption and the requirement of environment.Hybrid power vapour
Car is big for the dependence of power technology to advanced internal combustion engine.Pure electric vehicle has been broken away from first to traditional power set-diesel locomotive
Enter the dependence of technology, it is only necessary to battery, electric control gear and motor.Comparatively speaking, the change of fuel cell technology is most
Greatly, it includes the fuel system of fuel battery engines technology, the battery of pure electric automobile, motor technology and alternative fuel vehicle
System technology.Pure electric automobile will completely abolish engine, gearbox and car sedan-chair system, be the revolution of vehicle structure；Plug-in
Formula hybrid vehicle is then that will increase electric system on the basis of orthodox car.
Also there are many defects in existing vehicle-mounted energy storage technology, the performance of new-energy automobile is also far from reaching the pre- of people
Phase.It is short to be mainly reflected in course continuation mileage, poor safety performance, reliability deficiency, production cost it is high and using region it is limited wait it is square
Face.In new energy car battery, Mg base hydrogen bearing alloy due to it is light, security is good, hydrogen storage capability is big and price is relatively low
The advantages that be described as the hydrogen bearing alloy of the great competitiveness of a new generation.But there is electrochemistry circulation in existing Mg base hydrogen bearing alloy
Stability is bad, kinetics poor performance, and suction/hydrogen discharging speed is slow and hydrogen discharging temperature is higher, limits Mg base hydrogen bearing alloy
Commercialization process, there is an urgent need to existing Mg base hydrogen bearing alloy is modified.
The content of the invention
In order to solve the above-mentioned technical problem, this patent provides a kind of vehicle-mounted energy storage hydrogen bearing alloy, the hydrogen bearing alloy
Can have higher maximum discharge capacity, hydrogen storage content and suction/put hydrogen capacity conservation rate.It is specific as follows：
A kind of vehicle-mounted energy storage hydrogen bearing alloy, it is characterised in that in the crystalline texture of the hydrogen bearing alloy finished product, AB2Structure and
A5B19The component ratio sum of structure is more than 40%, and its preparation process is as follows：
(1) mid-frequency melting furnace is vacuumized, argon gas is passed through when vacuum reaches 0.1 ~ 1Pa；
(2) La is pressedaCebTicMgdNieCod-cDispensing is carried out, wherein a, b, c, d, e represents the atomicity ratio between element respectively, 0
<A≤0.5,0<B≤2,0<C, 0<e<D, 5<C+d+e≤8, the alloy raw material with honest material is put into the body of heater of step (1)；
(3) after the alloy raw material of step (2) in stove is powered fusing, supplement argon gas is passed through into stove again, pressure is reached 400
~ 800Pa, and by the temperature stabilization of melt at 1000 DEG C ~ 1400 DEG C；
(4) melt of step (3) is poured into the air pressure casting holding furnace full of nitrogen and be incubated, then will be molten in holding furnace
Body is poured into water cooling Copper casting mould, and mold is preheated into 300~400 DEG C before cast, obtains hydrogen bearing alloy；
(5) under an inert atmosphere, the hydrogen bearing alloy that step (4) obtains is quenched twice in succession, then 650 DEG C be tempered 1 ~
2h, room temperature is air-cooled to, obtains hydrogen bearing alloy finished product.
Preferably, the hydrogen bearing alloy that step (4) obtains is quenched twice in succession, hardening heat is 900 DEG C ~ 1000
DEG C, and after being incubated 4 ~ 6h water quenching to 200 ~ 250 DEG C, wherein, the water temperature that quenches is less than 20 DEG C when starting every time, at the end of water
Temperature is less than 50 DEG C, is tempered 1 ~ 2h at 650 DEG C again after quenching twice, is air-cooled to room temperature, obtains hydrogen bearing alloy finished product.
Preferably, after the alloy raw material of step (2) in stove is powered fusing, supplement argon gas is passed through into stove again, makes pressure
Power reaches 500 ~ 600Pa, and by the temperature stabilization of melt at 1300 DEG C ~ 1350 DEG C.
The maximum discharge capacity of the hydrogen bearing alloy finished product is 480mAh/g, and hydrogen storage content is up to 4.5%, after 500 circulations
Hydrogen absorption capacity conservation rate is 88%, puts hydrogen capacity conservation rate as 85%.
The remanent magnetization of the hydrogen bearing alloy finished product is less than 0.01 emu/g.
The advantages of this patent is：This patent makes the knot of alloy by the composition adjustment and Technology for Heating Processing to hydrogen bearing alloy
Crystal structure changes, and the finished product of acquisition has AB2Structure and A5B19The component ratio sum of structure is more than 40% characteristic,
Due to AB2And A5B19Type hydrogen storage alloy have the characteristics that discharge capacity is high, have extended cycle life with it is easily-activated, so as to ensure that this specially
Sharp hydrogen bearing alloy finished product can possess the discharge capacity bigger than prior art products and hydrogen storage content, and inhale/put hydrogen capacity guarantor
Holdup and remanent magnetization performance are also very excellent.
Embodiment
Most metals element can be with hydrogenation symphysis into metal hydride, according to can be substantially the characteristics of being reacted with hydrogen
It is divided into two kinds：One kind easily reacts with hydrogen and can largely inhale hydrogen, forms stable hydride, and releases substantial amounts of heat (Δ H
<0), this kind of metal is primarily present in IA ~ VB races, such as Ti, Zr, Ca, Mg, V, Nb, RE（Rare earth element）Deng；Another gold
Category is poor with the affinity of hydrogen, but hydrogen be easy to it is movable within, hydrogen these elements solubility very little, under usual conditions not
Generate hydride.These elements are mainly the transition metal (except Pd) of VIB ~ VIIIB races, such as Fe, Co, Ni, Cr, Cu, Al
Deng it is the endothermic reaction (Δ H that hydrogen, which dissolves in these metals,> 0).Generally, the former is referred to as stabilized hydrogen element by researcher, and the latter is referred to as
Hydrogen unstability element.Stabilized hydrogen element determine alloy hydrogen storage content, hydrogen unstability element determine alloy hydrogen absorption and desorption can
Inverse property, play regulation generation heat and decomposition pressure.The hydrogen bearing alloy developed at present is the combination of above two metal,
Possess preferable reversible hydrogen adsorption and desorption ability and thermodynamic property.
Magnesium-base hydrogen storage material has composite hydrogen storage material, simple substance hydrogen storage material and the major class of alloy hydrogen storage material 3.Elemental magnesium hydrogen storage
Material is seldom used to store hydrogen, mainly due to the suction/hydrogen discharging temperature height and suction/hydrogen discharge reaction dynamic performance of magnesium simple substance
Difference.Therefore, it is necessary to which magnesium simple substance is made into composite or carries out alloying to improve the hydrogen storage property of magnesium.Control the phase group of alloy
Into and relative amount be the important means that changes alloy property, phase structure species is various in RE-Ti-Mg systems, and part is mutually also deposited
In ppolymorphism structure.
Composition adjustment is to have carried out most work in alloy modification research, and can conveniently change alloy by alloying inhales
Hydrogen thermodynamics is put, so as to obtain different chemical properties.Existing research shows that the replacement of single-element is difficult to obtain alloy
The performance that must be satisfied with, the multi-element alloyed acquisition that would be even more beneficial to combination property.It can not be ignored, the addition of extraneous element is to alloy
Phase composition can equally impact, and distribution of the alloying element in different phases and its may also to out of phase performance impact
Have differences.These factors can all influence the final chemical property of alloy, but its precise mechanism needs further clearly.
Often there is an optimum value in alloy adding, but optimum content can change with alloy entirety composition transfer.
Technology for Heating Processing has close relationship to hydrogen storage property, the chemical property of alloy.Even if identical chemistry into
Point, under different heat treatment process conditions, good and bad different performance is also presented in the various performances of alloy.By quenching twice this patent
Burning hot handling process is handled, and can be effectively improved the chemical property of hydrogen bearing alloy.
This patent is further described with reference to embodiment and comparative example.
Embodiment 1：
A kind of vehicle-mounted energy storage hydrogen bearing alloy, it is characterised in that in the crystalline texture of the hydrogen bearing alloy finished product, AB2Structure and
A5B19The component ratio sum of structure is 40%, and its preparation process is as follows：(1) mid-frequency melting furnace is vacuumized, when vacuum reaches
Argon gas is passed through during 0.1 ~ 1Pa；(2) La is pressed0.2Ce0.5Ti1.5Mg3.7Ni0.2Co2.2Dispensing is carried out, the alloy raw material with honest material is thrown
In the body of heater for entering step (1)；(3) after the alloy raw material of step (2) in stove is powered fusing, supplement argon is passed through into stove again
Gas, pressure is set to reach 500Pa, and by the temperature stabilization of melt at 1200 DEG C；(4) melt of step (3) is poured into full of nitrogen
Air pressure casting holding furnace in be incubated, then by the melt cast in holding furnace into water cooling Copper casting mould, will be cast before cast
Mould is preheated to 300 DEG C, obtains hydrogen bearing alloy；(5) under an inert atmosphere, hydrogen bearing alloy step (4) obtained carries out continuous two
Secondary quenching, hardening heat are 1000 DEG C, and after being incubated 4h water quenching to 250 DEG C, wherein, the water temperature that quenches is low when starting every time
In 20 DEG C, at the end of water temperature be less than 50 DEG C, twice quench after again 650 DEG C be tempered 1h, be air-cooled to room temperature, obtain hydrogen bearing alloy
Finished product.The maximum discharge capacity of the hydrogen bearing alloy finished product is 480mAh/g, and hydrogen storage content is up to 4.5%, the suction after 500 circulations
Hydrogen capacity conservation rate is 88%, puts hydrogen capacity conservation rate as 85%.The remanent magnetization of the hydrogen bearing alloy finished product is less than 0.01 emu/
g。
Embodiment 2：
A kind of vehicle-mounted energy storage hydrogen bearing alloy, it is characterised in that in the crystalline texture of the hydrogen bearing alloy finished product, AB2Structure and
A5B19The component ratio sum of structure is 60%, and its preparation process is as follows：(1) mid-frequency melting furnace is vacuumized, when vacuum reaches
Argon gas is passed through during to 0.1 ~ 1Pa；(2) La is pressed0.5Ce1.5Ti2.1Mg3.5Ni1.1Co1.4Dispensing is carried out, by the alloy raw material with honest material
Put into the body of heater of step (1)；(3) after the alloy raw material of step (2) in stove is powered fusing, supplement argon is passed through into stove again
Gas, pressure is set to reach 600Pa, and by the temperature stabilization of melt at 1300 DEG C；(4) melt of step (3) is poured into full of nitrogen
Air pressure casting holding furnace in be incubated, then by the melt cast in holding furnace into water cooling Copper casting mould, will be cast before cast
Mould is preheated to 400 DEG C, obtains hydrogen bearing alloy；(5) under an inert atmosphere, hydrogen bearing alloy step (4) obtained carries out continuous two
Secondary quenching, hardening heat are 1000 DEG C, and after being incubated 5h water quenching to 250 DEG C, wherein, the water temperature that quenches is low when starting every time
In 20 DEG C, at the end of water temperature be less than 50 DEG C, twice quench after again 650 DEG C be tempered 1h, be air-cooled to room temperature, obtain hydrogen bearing alloy
Finished product.The maximum discharge capacity of the hydrogen bearing alloy finished product is 480mAh/g, and hydrogen storage content is up to 4.5%, the suction after 500 circulations
Hydrogen capacity conservation rate is 88%, puts hydrogen capacity conservation rate as 85%.The remanent magnetization of the hydrogen bearing alloy finished product is less than 0.01 emu/
g。
Embodiment 3：
A kind of vehicle-mounted energy storage hydrogen bearing alloy, it is characterised in that in the crystalline texture of the hydrogen bearing alloy finished product, AB2Structure and
A5B19The component ratio sum of structure is 45%, and its preparation process is as follows：(1) mid-frequency melting furnace is vacuumized, when vacuum reaches
Argon gas is passed through during to 0.1 ~ 1Pa；(2) La is pressed0.2Ce0.2Ti0.5Mg2.7Ni2Co2.2Dispensing is carried out, the alloy raw material with honest material is thrown
In the body of heater for entering step (1)；(3) after the alloy raw material of step (2) in stove is powered fusing, supplement argon is passed through into stove again
Gas, pressure is set to reach 500Pa, and by the temperature stabilization of melt at 1350 DEG C；(4) melt of step (3) is poured into full of nitrogen
Air pressure casting holding furnace in be incubated, then by the melt cast in holding furnace into water cooling Copper casting mould, will be cast before cast
Mould is preheated to 400 DEG C, obtains hydrogen bearing alloy；(5) under an inert atmosphere, hydrogen bearing alloy step (4) obtained carries out continuous two
Secondary quenching, hardening heat are 900 DEG C DEG C, and after being incubated 6h water quenching to 250 DEG C, wherein, the water temperature that quenches when starting every time
Less than 20 DEG C, at the end of water temperature be less than 50 DEG C, twice quench after again 650 DEG C be tempered 2h, be air-cooled to room temperature, obtain hydrogen storage conjunction
Golden finished product.The maximum discharge capacity of the hydrogen bearing alloy finished product is 480mAh/g, and hydrogen storage content is up to 4.5%, after 500 circulations
Hydrogen absorption capacity conservation rate is 88%, puts hydrogen capacity conservation rate as 85%.The remanent magnetization of the hydrogen bearing alloy finished product is less than 0.01
emu/g。
Comparative example 1：
The composition that will differ from this patent hydrogen bearing alloy is unsatisfactory for 5 as raw material, the ratio of particularly Ti, Mg and Ni element<c+d
During+e≤8, due to the change of element ratio, the rare earth alloy crystal structure for causing to be formed after melting changes, AB2Structure and
A5B19The component ratio of structure is significantly lower than 45%, even if after same Technology for Heating Processing processing, resulting hydrogen bearing alloy finished product
Maximum discharge capacity be only 350mAh/g, hydrogen storage content is only 2.5%.
Comparative example 2：
By elemental composition and ratio and the art of this patent scheme identical hydrogen bearing alloy, without quench twice heat treatment when,
Only with heat treatment mode of the prior art, the hydrogen bearing alloy obtained by it can not obtain the electrochemistry that this patent is improved
Can, lattice defect be present or alloy structure is uneven, therefore its maximum discharge capacity is only 300mAh/g, after 500 circulations
Hydrogen absorption capacity conservation rate is 70%, puts hydrogen capacity conservation rate as 65%.
This patent passes through the composition adjustment and Re Chu to hydrogen bearing alloy it can be seen from embodiment 1-3 and comparative example 1 and 2
Science and engineering skill, the crystalline texture of alloy is set to change, the finished product of acquisition has AB2Structure and A5B19The component ratio sum of structure
For more than 40% characteristic, due to AB2And A5B19Type hydrogen storage alloy has that discharge capacity is high, has extended cycle life and the spy such as easily-activated
Point, so as to ensure that the maximum discharge capacity of this patent hydrogen bearing alloy finished product is 480mAh/g, hydrogen storage content is up to 4.5%, at 500 times
Hydrogen absorption capacity conservation rate after circulation is 88%, puts hydrogen capacity conservation rate as 85%.Remanent magnetization is less than 0.01 emu/g.
While there has been shown and described that the embodiment of this patent, it will be understood by those skilled in the art that：Not
In the case of departing from the principle and objective of this patent a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of patent is limited by claim and its equivalent.
Claims (5)
- A kind of 1. vehicle-mounted energy storage hydrogen bearing alloy, it is characterised in that in the crystalline texture of the hydrogen bearing alloy finished product, AB2Structure and A5B19The component ratio sum of structure is more than 40%, and its preparation process is as follows：(1) mid-frequency melting furnace is vacuumized, argon gas is passed through when vacuum reaches 0.1 ~ 1Pa；(2) La is pressedaCebTicMgdNieCod-cDispensing is carried out, wherein a, b, c, d, e represents the atomicity ratio between element respectively, 0< A≤0.5,0<B≤2,0<C, 0<e<D, 5<C+d+e≤8, the alloy raw material with honest material is put into the body of heater of step (1)；(3) after the alloy raw material of step (2) in stove is powered fusing, supplement argon gas is passed through into stove again, pressure is reached 400 ~ 800Pa, and by the temperature stabilization of melt at 1000 DEG C ~ 1400 DEG C；(4) melt of step (3) is poured into the air pressure casting holding furnace full of nitrogen and be incubated, then will be molten in holding furnace Body is poured into water cooling Copper casting mould, and mold is preheated into 300~400 DEG C before cast, obtains hydrogen bearing alloy；(5) under an inert atmosphere, the hydrogen bearing alloy that step (4) obtains is quenched twice in succession, then 650 DEG C be tempered 1 ~ 2h, room temperature is air-cooled to, obtains hydrogen bearing alloy finished product.
- 2. vehicle-mounted energy storage hydrogen bearing alloy according to claim 1, it is characterised in that：The hydrogen storage that step (4) is obtained is closed Gold quenched twice in succession, hardening heat is 900 DEG C ~ 1000 DEG C, and insulation 4 ~ 6h after water quenching to 200 ~ 250 DEG C, its In, the water temperature that quenches is less than 20 DEG C when starting every time, at the end of water temperature be less than 50 DEG C, be tempered 1 at 650 DEG C again after quenching twice ~ 2h, is air-cooled to room temperature, obtains hydrogen bearing alloy finished product.
- 3. alloy according to claim 1, it is characterised in that：After the alloy raw material of step (2) in stove is powered fusing, then It is secondary that supplement argon gas is passed through into stove, pressure is reached 500 ~ 600Pa, and by the temperature stabilization of melt at 1300 DEG C ~ 1350 DEG C.
- 4. vehicle-mounted energy storage hydrogen bearing alloy according to claim 4, it is characterised in that：The maximum of the hydrogen bearing alloy finished product Discharge capacity is 480mAh/g, and the hydrogen absorption capacity conservation rate after 500 circulations is 88%, puts hydrogen capacity conservation rate as 85%.
- 5. the vehicle-mounted energy storage hydrogen bearing alloy according to Claims 1-4, it is characterised in that：The hydrogen bearing alloy finished product Remanent magnetization is less than 0.01 emu/g.
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| CN1445375A (en) * | 2003-03-24 | 2003-10-01 | 浙江大学 | New type hydrogen storage alloy as well as method of its preparation and quench treatment method |
| CN1563453A (en) * | 2004-04-01 | 2005-01-12 | 桂林电子工业学院 | rEXmGYnI4-zAz alloy of storing hydrogen and uncrystallized preparation method |
| CN101626076A (en) * | 2008-07-07 | 2010-01-13 | 北京有色金属研究总院 | High-capacity long-life low-cost rare earth and magnesium-based hydrogen storage alloy |
| CN101871060A (en) * | 2010-06-21 | 2010-10-27 | 桂林电子科技大学 | Nickel-hydrogen battery negative electrode hydrogen storage material capable of being used at low temperature and matched electrolytic solution thereof |
| WO2012011946A2 (en) * | 2010-07-20 | 2012-01-26 | Iowa State University Research Foundation, Inc. | Method for producing la/ce/mm/y base alloys, resulting alloys, and battery electrodes |
| JP2013147753A (en) * | 2013-04-11 | 2013-08-01 | Toshiba Corp | Method for manufacturing hydrogen storing alloy for battery |
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