KR101280286B1 - Zirconium and Titanium Hydrogen Storage Alloy - Google Patents

Zirconium and Titanium Hydrogen Storage Alloy Download PDF

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KR101280286B1
KR101280286B1 KR1020110018178A KR20110018178A KR101280286B1 KR 101280286 B1 KR101280286 B1 KR 101280286B1 KR 1020110018178 A KR1020110018178 A KR 1020110018178A KR 20110018178 A KR20110018178 A KR 20110018178A KR 101280286 B1 KR101280286 B1 KR 101280286B1
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hydrogen storage
hydrogen
alloy
zirconium
storage alloy
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KR20120098312A (en
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김병관
이정빈
최유송
지현진
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국방과학연구소
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C22/00Alloys based on manganese
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C2202/00Physical properties
    • C22C2202/04Hydrogen absorbing
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30Hydrogen technology
    • Y02E60/32Hydrogen storage

Abstract

본 발명의 일 실시예에 따르는 티타늄-지르코늄계 수소저장합금은,
[(Ti0 .9 Zr0 .1 V0 .25-x Cr0 .27 Mn1 .55 Alx) + Ywt% C](0 ≤ X ≤ 0.2, 0 ≤ Y ≤ 1) 의 화학식을 가짐으로써, 기존의 LaNi5, Mg2Ni AB2 type의 수소저장합금 보다 수소의 저장 방출 특성이 뛰어나고, 히스터리시스와 슬로핑이 매우 작은 이점이 있다.
Titanium-zirconium-based hydrogen storage alloy according to an embodiment of the present invention,
[(Ti 0 .9 Zr 0 .1 V 0 .25-x Cr 0 .27 Mn 1 .55 Al x) + Ywt% C] (0 ≤ X ≤ 0.2, 0 ≤ Y ≤ 1) of By having a chemical formula, hydrogen has better storage release characteristics than conventional LaNi 5 and Mg 2 Ni AB 2 type hydrogen storage alloys, and has very little hysteresis and slope.

Description

티타늄-지르코늄계 수소저장합금{Zirconium and Titanium Hydrogen Storage Alloy}Titanium-zirconium-based hydrogen storage alloy {Zirconium and Titanium Hydrogen Storage Alloy}

본 발명은 비화학양론비를 갖는 수소저장합금에 관한 것으로 보다 자세하게는 티타늄-지르코늄(Ti-Zr)을 포함하는 화학식을 가짐으로써 기존의 란탄-니켈(La-Ni)계 및 철-티타늄(Fe-Ti)계 등의 수소저장합금에 비하여 저장용량을 증가시키면서 수소 흡수/방출 특성과 저장압력을 조절하여 연료전지용 수소저장 매체 또는 수소화 반응열을 이용한 히트펌프 등의 용도로 사용할 수 있는 비화학양론비를 갖는 수소저장합금에 관한 것이다.The present invention relates to a hydrogen storage alloy having a non-stoichiometric ratio, and more particularly, by having a chemical formula including titanium-zirconium (Ti-Zr), lanthanum-nickel (La-Ni) -based and iron-titanium (Fe). Non-stoichiometric ratio that can be used for hydrogen storage media for fuel cells or heat pumps using heat of hydrogenation reaction by controlling hydrogen absorption / release characteristics and storage pressure while increasing storage capacity compared to hydrogen storage alloys such as -Ti) It relates to a hydrogen storage alloy having a.

수소는 화석 연료를 대체할 새로운 에너지 매체로 연구되고 있으며, 질량당 에너지 밀도는 가솔린, 액화천연가스에 비하여 매우 높다, 그러나 수소의 비점은 -256.6℃ 이고, 상온, 상압에서는 기체이므로 체적당 저장 가능한 에너지 밀도가 작다. 이러한 문제 때문에 수소를 이용함에 있어서 수소의 효율적 저장 및 수송은 중요한 현안이다.Hydrogen is being studied as a new energy medium to replace fossil fuels, and the energy density per mass is much higher than that of gasoline and liquefied natural gas, but the boiling point of hydrogen is -256.6 ° C, and it is a gas at room temperature and pressure, so it can be stored per volume. Energy density is small. Because of this problem, efficient storage and transportation of hydrogen is an important issue.

최근 수소의 효율적 저장방법에 대해 다양하게 연구되고 있으나 저장된 수소를 사용하기 위해서는 수소의 방출이 온도나 압력, 흡수/방출속도 측면에서 용이해야 한다. 이러한 관점에서 일부 금속수소화합물을 이용한 수소저장은 우수한 특성을 갖고 있으며, 부피 저장밀도가 높고 안정성이 뛰어나다는 장점을 가지고 있다.Recently, various researches on efficient storage methods of hydrogen have been conducted. However, in order to use stored hydrogen, the release of hydrogen must be easy in terms of temperature, pressure, and absorption / release rate. In this respect, hydrogen storage using some metal hydrogen compounds has excellent characteristics, and has the advantage of high volume storage density and excellent stability.

Ti-Cr-V계 체심입방구조(Body-centered cubic lattice structure) 합금으로 등록된 특허 제0263718호 고밀도의 수소흡장량을 나타내는 수소저장합금이 있다.There is a hydrogen storage alloy that exhibits a high density of hydrogen storage amount of Patent No. 0263718 registered as a Ti-Cr-V based body-centered cubic lattice structure alloy.

그리고, 지금까지 알려진 수소화 반응 금속은 Mg, Ti, Zr과 같은 순금속과 FeTi 등과 같은 금속간 화합물이 있다.The hydrogenation metals known to date include pure metals such as Mg, Ti and Zr, and intermetallic compounds such as FeTi.

일반적으로 MgH2 같은 순금속계의 수소 저장 특성은 수소저장용량은 크나 분해반응시 평행압력이 매우 낮으며 수소의 흡수, 방출속도가 느리므로 연료전지 또는 수소화 반응열을 이용한 히트펌프용 합금으로는 적합하지 못한 단점이 있다.In general, hydrogen storage characteristics of pure metals such as MgH 2 have a large hydrogen storage capacity, but the parallel pressure is very low during decomposition reactions, and the absorption and release rate of hydrogen is low. There is a disadvantage.

그러나, 금속간화합물계 수소저장합금은 수소저장용량 및 수소의 흡수/방출 속도가 매우 빠르고 분해반응의 평탄압력이 적당하다.However, the intermetallic compound hydrogen storage alloy has a very high hydrogen storage capacity and a very fast absorption / release rate of hydrogen, and a moderate pressure of decomposition reaction is appropriate.

또한 화학적 안정성이 좋아 이에 대한 연구가 활발하게 진행되어 왔다.In addition, due to its good chemical stability, research has been actively conducted.

대표적으로 LaNi5, Mg2Ni, AB2 type의 Laves phase 합금들이 개발되었다. 상기 개발된 LaNi5 계 합금의 경우 수소의 흡수/방출 특성이 뛰어나지만 수소저장용량이 약 1.5wt% 정도로 낮아 수소저장용 합금으로 적용하기 곤란하며, La의 가격이 비싸서 경제성이 떨어진다.Representative Laves phase alloys of LaNi 5 , Mg 2 Ni and AB 2 types have been developed. The developed LaNi 5- based alloy has excellent absorption / release characteristics of hydrogen, but the hydrogen storage capacity is about 1.5 wt%, which makes it difficult to apply the alloy for hydrogen storage.

그리고, Mg2Ni계 수소저장합금은 수소저장량은 매우 크나 사용온도가 200℃이상으로 상온용 수소저장매체에 적용하기 힘들다.In addition, Mg 2 Ni-based hydrogen storage alloy is very large hydrogen storage amount, it is difficult to apply to the hydrogen storage medium for room temperature as the operating temperature is 200 ℃ or more.

한편, AB2 type의 Laves phase 합금(A part : Zr, Ti, B part : V, Cr, Mn 등의 원소로 구성되어 지며 A와 B part의 양론비가 1:2로 구성된다)의 경우는 수소저장 용량이 크고 수소화반응속도가 빨라 수소저장 및 히트펌프 등의 응용분야에 사용이 가능한 것으로 알려져 있다. On the other hand, in the case of AB2 type Laves phase alloy (A part: Zr, Ti, B part: V, Cr, Mn, etc., the stoichiometric ratio of A and B part is 1: 2) Due to its large capacity and fast hydrogenation reaction, it is known that it can be used for applications such as hydrogen storage and heat pump.

하지만 D.O. Northwood 등은 “Storing Hydrogen in AB2 Laves phase-type Compounds”[Z.phys Chem.N.F.,147,191-209,1986]에서 ZrV, ZrCr, ZrMn₂합금의 수소 반응 거동을 고찰한 결과 수소저장용량 및 반응속도 측면에서는 우수한 특성을 가지고 있으나 형성된 수소화합물이 매우 안정하여 가역적인 수소이동이 필요한 실제 응용분야에는 적용이 어려움을 보고한 바 있다.But D.O. Northwood et al. Investigated the hydrogen reaction behavior of ZrV, ZrCr and ZrMn₂ alloys in “Storing Hydrogen in AB2 Laves phase-type Compounds” [Z.phys Chem.NF, 147,191-209,1986]. Has excellent properties, but it has been reported that it is difficult to apply to practical applications requiring reversible hydrogen transfer because the formed hydrogen compounds are very stable.

이는 상온에서의 평탄압력(plateau pressure)이 상압 이하로 매우 낮음에 기인함으로 평탄압력을 높이기 위한 연구가 집중적으로 수행되었다.This is due to the fact that the plateau pressure at room temperature is very low below the atmospheric pressure, and thus, researches to increase the planar pressure have been intensively performed.

예를 들어 Shaltiel[J.Less-Comm.Metals, 73,369-386, 1980], Northwood [J.less-Comm.Metals, 147,149-159,1988] 등은 지르코늄(Zr) 대신 티타늄(Ti)을 치환하고 크롬(Cr) 대신 철(Fe)을 치환하는 3원계 합금을 보고하였으며, Wallace[U.S.Pat.No.4.556.551], Jai-Young Lee[U.S.Pat.No.5.028.389] 등은 Zr-Ti-Cr-Fe의 4원계 합금을 보고하였다.For example, Shaltiel [J. Less-Comm.Metals, 73,369-386, 1980], Northwood [J.less-Comm.Metals, 147,149-159,1988], substitutes titanium for zirconium (Zr). Reported ternary alloys replacing iron (Fe) instead of chromium (Cr), Wallace [US Pat. No.4.556.551], Jai-Young Lee [US Pat. No. 5.028.389], and others, Zr-Ti. A quaternary alloy of -Cr-Fe has been reported.

이중, Jai-Young Lee가 보고한 4원계 수소저장합금은 Cr과 Fe의 조성비를 변화시킴에 따라 평탄압력을 여러 응용분야에 공통되는 0.1 ~ 1.6 wt% H 범위에서 자유로이 변화시킬 수 있는 장점이 있다.Among these, the four-base hydrogen storage alloy reported by Jai-Young Lee has the advantage of freely changing the flat pressure in the range of 0.1 to 1.6 wt% H, which is common to many applications, by changing the composition ratio of Cr and Fe. .

그러나, Jai-Young Lee가 보고한 4원계 수소저장합금은 기존 개발된 합금(1.3wt%H) 보다는 우수하나 여전히 수소저장용량이 1.6wt% H로 작고, 수소가 흡수될 때의 압력차이인 히스터리시스(hysteresis)가 커 수소흡수/방출 시의 에너지 손실로 인해 응용분야 시스템의 상용화 및 고성능화에 걸림돌이 되고 있다.However, the quaternary hydrogen storage alloy reported by Jai-Young Lee is superior to the existing alloy (1.3 wt% H), but still has a small hydrogen storage capacity of 1.6 wt% H and is a pressure difference when hydrogen is absorbed. Due to the large hysteresis, the energy loss in hydrogen absorption / discharge is an obstacle to the commercialization and high performance of the application system.

따라서, 수소저장량이 큰 합금을 개발하기 위하여 많은 연구가 수행되었다.Therefore, many studies have been conducted to develop alloys having a large hydrogen storage amount.

이에 Moriwaki[J.Less-Comm.Metals,172-174,1028-1035,1991] 등은 수소저장합금의 수소저장용량을 증가시키기 위하여 Ti₁-xZrxMn2-yCty 합금을 보고하였다.Moriwaki [J. Less-Comm. Metals, 172-174, 1028-1035, 1991] reported Ti₁- x Zr x Mn 2 - y Ct y alloys to increase the hydrogen storage capacity of hydrogen storage alloys.

상기 합금은 원자량이 약91g/mol로 무거운 지르코늄(Zr)대신 원자량이 약47g/mol로 가벼운 티타늄(Ti)을 주요원소로 하고 있어 수소 저장용량이 약 2wt%H로 매우 우수한 특성을 나타내고 있었으나 히스터리시스가 크며 슬로핑 특성이 나쁜 단점이 있다.The alloy has a very high hydrogen storage capacity of about 2wt% H because the alloy is composed of titanium (Ti), which is light in atomic weight of 47g / mol, instead of heavy zirconium (Zr) in atomic weight of about 91g / mol. There is a disadvantage in that the telesis is large and the slope characteristics are bad.

따라서, 충분한 수소저장용량을 확보하고 히스터리시스 및 슬로핑 특성이 우수한 수소저장합금 개발이 절실한 실정이다.Therefore, there is an urgent need to develop a hydrogen storage alloy having sufficient hydrogen storage capacity and excellent hysteresis and slopeing characteristics.

본 발명의 실시예들은 고용량의 수소저장량을 확보함과 동시에 여러 압력범위에서 수소를 흡수/방출하고 히스터리시스 등의 제반물성을 향상시키고 수소저장합금의 조성율이 비화학양론비를 가지게 함으로써 고성능 수소저장합금설계 범위를 확대하여 연료전지 분야에 응용 가능한 티타늄-지르코늄(Ti-Zr), 바나듐-크롬-망간-알루미늄-탄소(V-Cr-Mn-Al-C)등을 포함한 수소저장합금을 제공하기 위한 것이다.Embodiments of the present invention ensure high capacity of hydrogen storage and at the same time absorb / release hydrogen at various pressure ranges, improve various properties such as hysteresis, and make the composition of the hydrogen storage alloy have a non-stoichiometric ratio. Expanding the range of hydrogen storage alloy design, hydrogen storage alloys including titanium-zirconium (Ti-Zr), vanadium-chromium-manganese-aluminum-carbon (V-Cr-Mn-Al-C), etc. It is to provide.

이와 같은 본 발명의 해결 과제를 달성하기 위하여, 본 발명의 일 실시예에 따르는 티타늄-지르코늄계 수소저장합금은, In order to achieve the above object of the present invention, the titanium-zirconium-based hydrogen storage alloy according to an embodiment of the present invention,

[(Ti0 .9 Zr0 .1 V0 .25-x Cr0 .27 Mn1 .55 Alx) + Ywt% C](0≤X≤0.2, 0≤Y≤1) 화학식을 가진다. 여기서, Ti는 티타늄이며, Zr은 지르코늄, V는 바나듐, Cr은 크롬, Mn은 망간, Al은 알루미늄, C는 탄소의 원소기호를 나타내며. 또한 “X" , "Y ”는 각각 합금 조성 원소들의 원자분율로써 X는 0≤X≤0.2의 범위를 만족하는 값이고, Y 는 0≤Y≤1을 만족하는 값이다. [(Ti 0 .9 Zr 0 .1 V 0 .25-x Cr 0 .27 Mn 1 .55 Al x) + Ywt% C] (0≤X≤0.2, 0≤Y≤1) of Have the formula Here, Ti is titanium, Zr is zirconium, V is vanadium, Cr is chromium, Mn is manganese, Al is aluminum, and C is carbon. In addition, "X" and "Y" are atomic fractions of alloy composition elements, respectively, X is a value satisfying the range of 0≤X≤0.2, and Y is a value satisfying 0≤Y≤1.

본 발명의 구성에 의하면 기존의 LaNi5, Mg2Ni AB2 type의 수소저장합금 보다 수소의 저장 방출 특성이 뛰어나고, 히스터리시스와 슬로핑이 매우 작은 특징이 있다.According to the constitution of the present invention, hydrogen is better in storage release characteristics than conventional LaNi 5 and Mg 2 Ni AB 2 type hydrogen storage alloys, and hysteresis and slope are very small.

도 1은 본 발명의 일 실시예와 관련된 수소저장합금의 30℃ PCT 그래프.1 is a 30 ° C PCT graph of the hydrogen storage alloy according to an embodiment of the present invention.

아래에서는 첨부한 도면을 참조하여 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 용이하게 실시할 수 있도록 본 발명의 실시예를 상세히 설명한다. 그러나 본 발명은 여러 가지 상이한 형태로 구현될 수 있으며, 여기에서 설명하는 실시예에 한정되지 않는다.DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

그리고 도면에서 본 발명을 명확하게 설명하기 위해서 설명과 관계없는 부분은 생략하였으며, In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention.

명세서 전체에서, 어떤 부분이 어떤 구성요소를 포함한다고 할 때, 이는 특별히 반대되는 기재가 없는 한 다른 구성요소를 제어하는 것이 아니라 다른 구성요소를 더 포함할 수 있는 것을 의미한다.Throughout the specification, when a component comprises a component, it is understood that it may include other components, not control of the other component, unless specifically stated otherwise.

도 1은 본 발명에 따른 Ti0 .9 Zr0 .1 V0 .2 Cr0 .27 Mn1 .55 Al0 .05 과 Ti0 .9 Zr0 .1 V0 .2 Cr0.27 Mn1 .55 Al0 .05 + 0.3wt% C 화학식을 가지는 수소저장합금의 대표도로 45℃ PCT 그래프이다.1 is according to the present invention Ti 0 .9 Zr 0 .1 V 0 .2 Cr 0 .27 Mn 1 .55 Al 0 .05 and Ti 0 .9 Zr 0 .1 V 0 .2 Cr 0.27 Mn 1 .55 Al 0 .05 + 0.3wt% C 45 ℃ PCT graph is representative of the hydrogen storage alloy having the formula.

본 발명은 (Ti0 .9 Zr0 .1 V0 .25-x Cr0 .27 Mn1 .55 Alx) + Ywt% C (0≤X≤0.2, 0≤Y≤1) 화학식을 가지는 수소저장합금이다.The invention (Ti 0 .9 Zr 0 .1 V 0 .25-x Cr 0 .27 Mn 1 .55 Al x) + Ywt% C (0≤X≤0.2, 0≤Y≤1) of It is a hydrogen storage alloy having a chemical formula.

여기서, Ti는 티타늄이며, Zr은 지르코늄, V는 바나듐, Cr은 크롬, Mn은 망간, Al은 알루미늄, C는 탄소의 원소기호를 나타내며. 또한 “X" , "Y ”는 각각 합금 조성 원소들의 원자분율로써 X는 0≤X≤0.2의 범위를 만족하는 값이고, Y 는 0≤Y≤1을 만족하는 값이다.Here, Ti is titanium, Zr is zirconium, V is vanadium, Cr is chromium, Mn is manganese, Al is aluminum, and C is carbon. In addition, "X" and "Y" are atomic fractions of alloy composition elements, respectively, X is a value satisfying the range of 0≤X≤0.2, and Y is a value satisfying 0≤Y≤1.

그리고, 도 1은 본 발명에 따른 수소저장합금을 상세히 설명하는 도면이다.1 is a view for explaining the hydrogen storage alloy according to the present invention in detail.

또한, 본 발명에 따른 비화학양론비를 가지는 수소저장합금은 상기 화학식과 같으며, 각 화학식에 따른 수소저장합금의 실시예는 진공 및 아르곤 분위기하에서 아크용 해법(arc-melting)을 사용하여 제조하였으며, 제조된 합금은 기계적으로 분쇄하여 분말화 한 후, 시버트형 P-C-T선도 측정장비를 이용하여 수소화반응특성을 측정하여 도면화 하였다.In addition, the hydrogen storage alloy having a non-stoichiometric ratio according to the present invention is the same as the above formula, an embodiment of the hydrogen storage alloy according to each formula is prepared by using arc-melting under vacuum and argon atmosphere The prepared alloy was mechanically pulverized and powdered, and then the hydrogenated reaction characteristics were measured and plotted using a Sibert-type PCT diagram measuring equipment.

본 발명의 일실시예에 따르는 수소저장합금은, Hydrogen storage alloy according to an embodiment of the present invention,

[(Ti0 .9 Zr0 .1 V0 .25-x Cr0 .27 Mn1 .55 Alx) + Ywt% C](0≤X≤0.2, 0≤Y≤1) 화학식을 가지며, 여기서, Ti는 티타늄이며, Zr은 지르코늄, V는 바나듐, Cr은 크롬, Mn은 망간, Al은 알루미늄, C는 탄소의 원소기호를 나타내며. 또한 “X" , "Y ”는 각각 합금 조성 원소들의 원자분율로써 X는 0≤X≤0.2의 범위를 만족하는 값이고, Y 는 0≤Y≤1을 만족하는 값을 갖는 것을 특징으로 하는 수소저장합금을 가지도록 하였다. [(Ti 0 .9 Zr 0 .1 V 0 .25-x Cr 0 .27 Mn 1 .55 Al x) + Ywt% C] (0≤X≤0.2, 0≤Y≤1) of Wherein Ti is titanium, Zr is zirconium, V is vanadium, Cr is chromium, Mn is manganese, Al is aluminum, and C is carbon. Also, "X" and "Y" are atomic fractions of alloy composition elements, respectively, X is a value satisfying a range of 0≤X≤0.2, and Y has a value satisfying 0≤Y≤1. It has a storage alloy.

상기와 같은 범위에서 다수의 합금을 설계 제조하여 최적 조성을 구한 다음 각 원자분율 값이 Ti0 .9 Zr0 .1 V0 .2 Cr0 .27 Mn1 .55 Al0 .05 + 0.3wt% C 합금을 제조한 뒤 PCT 분석결과 그 특성이 도1에서와 같이 수소저장 및 방출 특성이 우수한 합금이 획득됨을 알 수 있다.The optimum composition obtained the following respective atom fraction value to manufacturing design a large number of alloy in the scope described above Ti 0 .9 Zr 0 .1 V 0 .2 Cr 0 .27 Mn 1 .55 Al 0 .05 + 0.3wt% C After preparing the alloy, PCT analysis shows that the alloy has excellent hydrogen storage and release characteristics as shown in FIG. 1.

그리고 주어진 합금 조성 원소들의 원자 분율이 상기 범위를 벗어날 경우(각 분율의 상한 값 및 하한 값) BCC Phase 등의 새로운 상의 형성 및 불순 영역이 확대되어 수소저장합금의 흡방출 특성과 슬로핑/히스테리시스 등 제반 물성이 나빠진다.If the atomic fraction of a given alloy composition element is out of the above range (the upper limit and the lower limit of each fraction), the formation and impurity region of the new phase such as the BCC phase is expanded, so that the absorption and release characteristics of the hydrogen storage alloy and the slope / hysteresis, etc. Physical properties deteriorate.

이상과 같은 구성에 의한 본 발명은 기존의 LaNi5, Mg2Ni, AB2 type의 수소 저장합금보다 수소의 저장 방출 특성이 뛰어나고, 히스터리시스와 슬로핑이 매우 작은 특징이 있다.The present invention by the configuration as described above is excellent in the storage release characteristics of hydrogen than the conventional LaNi 5 , Mg 2 Ni, AB 2 type hydrogen storage alloy, and has the characteristics of very little hysteresis and slope.

전술한 본 발명의 설명은 예시를 위한 것이며, 본 발명이 속하는 기술분야의 통상의 지식을 가진 자는 본 발명의 기술적 사상이나 필수적인 특징을 변경하지 않고서 다른 구체적인 형태로 쉽게 변형이 가능하다는 것을 이해할 수 있을 것이다.The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be.

그러므로 이상에서 기술한 실시예는 모든 면에서 예시적인 것이며 한정적이 아닌 것으로 이해해야만 한다. 예를 들어 단일형으로 설명되어 있는 각 구성요소는 분산되어 실시될 수도 있으며, 마찬가지로 분산된 것으로 설명되어 있는 구성요소들도 결합 된 형태로 실시될 수 있다.It is therefore to be understood that the above-described embodiments are illustrative and non-restrictive in every respect. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may be implemented in a combined manner.

본 발명의 범위는 상세한 설명보다는 후술하는 특허청구범위에 의하여 나타내어지며, 청구범위의 의미 및 범위 그리고 그 균등 개념으로부터 도출되는 모든 변경 또는 변형된 형태가 본 발명의 범위에 포함되는 것으로 해석되어야 한다. The scope of the present invention is shown by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention.

Claims (1)

Ti - Zr계 수소저장 합금에 있어서.
(Ti0.9 Zr0.1 V0.25-x Cr0.27 Mn1.55 Alx) + Ywt% C
화학식을 가지며, 여기서, Ti는 티타늄이며, Zr은 지르코늄, V는 바나듐, Cr은 크롬, Mn은 망간, Al은 알루미늄, C는 탄소이고,
또한 "X", "Y"는 각각 합금 조성 원소들의 원자분율로써 X는 0 < X ≤ 0.2의 범위를 만족하는 값이고, Y 는 0 < Y ≤ 1을 만족하는 값으로 이루어지는 것을 특징으로 하는 티타늄-지르코늄계 수소저장합금.
In Ti-Zr based hydrogen storage alloys.
(Ti 0.9 Zr 0.1 V 0.25-x Cr 0.27 Mn 1.55 Al x ) + Ywt% C
of Wherein Ti is titanium, Zr is zirconium, V is vanadium, Cr is chromium, Mn is manganese, Al is aluminum, C is carbon,
Also, "X" and "Y" are atomic fractions of alloy composition elements, respectively, wherein X is a value satisfying a range of 0 <X ≤ 0.2, and Y is a value satisfying 0 <Y ≤ 1 Zirconium-based hydrogen storage alloy.
KR1020110018178A 2011-02-28 2011-02-28 Zirconium and Titanium Hydrogen Storage Alloy KR101280286B1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11106859A (en) * 1997-10-01 1999-04-20 Toyota Motor Corp Hydrogen storage alloy excellent in plateau flatness
JP2000239703A (en) 1999-02-17 2000-09-05 Sumitomo Metal Ind Ltd Manufacture of hydrogen storage alloy powder excellent in oxidation resistance
KR100958416B1 (en) * 2009-09-25 2010-05-18 김병관 Hydrogen storage alloy

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11106859A (en) * 1997-10-01 1999-04-20 Toyota Motor Corp Hydrogen storage alloy excellent in plateau flatness
JP2000239703A (en) 1999-02-17 2000-09-05 Sumitomo Metal Ind Ltd Manufacture of hydrogen storage alloy powder excellent in oxidation resistance
KR100958416B1 (en) * 2009-09-25 2010-05-18 김병관 Hydrogen storage alloy

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