JP2021082537A - マグネシウムイオン二次電池、マグネシウムイオン二次電池用正極活物質及びマグネシウムイオン二次電池用正極 - Google Patents
マグネシウムイオン二次電池、マグネシウムイオン二次電池用正極活物質及びマグネシウムイオン二次電池用正極 Download PDFInfo
- Publication number
- JP2021082537A JP2021082537A JP2019210726A JP2019210726A JP2021082537A JP 2021082537 A JP2021082537 A JP 2021082537A JP 2019210726 A JP2019210726 A JP 2019210726A JP 2019210726 A JP2019210726 A JP 2019210726A JP 2021082537 A JP2021082537 A JP 2021082537A
- Authority
- JP
- Japan
- Prior art keywords
- positive electrode
- secondary battery
- ion secondary
- active material
- magnesium ion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- 239000007774 positive electrode material Substances 0.000 title claims abstract description 51
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 229910001425 magnesium ion Inorganic materials 0.000 title claims abstract description 47
- 239000000203 mixture Substances 0.000 claims abstract description 21
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 9
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 4
- 239000003792 electrolyte Substances 0.000 claims description 8
- 239000011777 magnesium Substances 0.000 description 73
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 43
- 229910052749 magnesium Inorganic materials 0.000 description 42
- 238000006243 chemical reaction Methods 0.000 description 24
- 230000002441 reversible effect Effects 0.000 description 21
- -1 sulfur ion Chemical class 0.000 description 21
- 239000010410 layer Substances 0.000 description 17
- 239000010955 niobium Substances 0.000 description 15
- 239000000463 material Substances 0.000 description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 13
- 239000007773 negative electrode material Substances 0.000 description 13
- 238000000634 powder X-ray diffraction Methods 0.000 description 10
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 9
- 239000002131 composite material Substances 0.000 description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 9
- 229910052782 aluminium Inorganic materials 0.000 description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 8
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- 238000002844 melting Methods 0.000 description 7
- 230000008018 melting Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 239000002994 raw material Substances 0.000 description 7
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- 238000005259 measurement Methods 0.000 description 6
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- 238000012360 testing method Methods 0.000 description 6
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 5
- 238000010304 firing Methods 0.000 description 5
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- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 1
- 235000010300 dimethyl dicarbonate Nutrition 0.000 description 1
- POLCUAVZOMRGSN-UHFFFAOYSA-N dipropyl ether Chemical compound CCCOCCC POLCUAVZOMRGSN-UHFFFAOYSA-N 0.000 description 1
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- 150000002170 ethers Chemical class 0.000 description 1
- 229940093499 ethyl acetate Drugs 0.000 description 1
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 1
- CYEDOLFRAIXARV-UHFFFAOYSA-N ethyl propyl carbonate Chemical compound CCCOC(=O)OCC CYEDOLFRAIXARV-UHFFFAOYSA-N 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910021385 hard carbon Inorganic materials 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
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- 230000002687 intercalation Effects 0.000 description 1
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- 239000003273 ketjen black Substances 0.000 description 1
- 150000002681 magnesium compounds Chemical class 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical class [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- RCIJMMSZBQEWKW-UHFFFAOYSA-N methyl propan-2-yl carbonate Chemical compound COC(=O)OC(C)C RCIJMMSZBQEWKW-UHFFFAOYSA-N 0.000 description 1
- 229940017219 methyl propionate Drugs 0.000 description 1
- KKQAVHGECIBFRQ-UHFFFAOYSA-N methyl propyl carbonate Chemical compound CCCOC(=O)OC KKQAVHGECIBFRQ-UHFFFAOYSA-N 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 235000010981 methylcellulose Nutrition 0.000 description 1
- NFFIWVVINABMKP-UHFFFAOYSA-N methylidynetantalum Chemical compound [Ta]#C NFFIWVVINABMKP-UHFFFAOYSA-N 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- SWVGZFQJXVPIKM-UHFFFAOYSA-N n,n-bis(methylamino)propan-1-amine Chemical compound CCCN(NC)NC SWVGZFQJXVPIKM-UHFFFAOYSA-N 0.000 description 1
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- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Chemical compound O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
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- 229910052717 sulfur Inorganic materials 0.000 description 1
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- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
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- 229910052718 tin Inorganic materials 0.000 description 1
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- AJSTXXYNEIHPMD-UHFFFAOYSA-N triethyl borate Chemical compound CCOB(OCC)OCC AJSTXXYNEIHPMD-UHFFFAOYSA-N 0.000 description 1
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- 229910052727 yttrium Inorganic materials 0.000 description 1
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- PAPBSGBWRJIAAV-UHFFFAOYSA-N ε-Caprolactone Chemical compound O=C1CCCCCO1 PAPBSGBWRJIAAV-UHFFFAOYSA-N 0.000 description 1
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
Description
下記の組成式(1)により表される、マグネシウムイオン二次電池用正極活物質を提供する。
MgM2O6 ・・・(1)
式(1)中、Mは、V、Nb、又はTaである。
近年、多価イオンをキャリアとする多価イオン二次電池が盛んに研究されている。多価イオン二次電池として、Ca2+をキャリアとするカルシウム二次電池、Be2+をキャリアとするベリリウム二次電池、Mn2+をキャリアとするマンガン二次電池、Ni2+をキャリアとするニッケル二次電池、Zn2+をキャリアとする亜鉛二次電池、Y3+をキャリアとするイットリウム二次電池、Al3+をキャリアとするアルミニウム二次電池、及びMg2+をキャリアとするマグネシウム二次電池が挙げられる。最近では、マグネシウムイオン二次電池の研究が注目されている。
本開示の第1態様に係るマグネシウムイオン二次電池用正極活物質は、
下記の組成式(1)により表される。
MgM2O6 ・・・(1)
式(1)中、Mは、V、Nb、又はTaである。
集電体と、
前記集電体の上に配置された第1又は第2態様に係るマグネシウムイオン二次電池用正極活物質と、
を含む。
第3態様に係るマグネシウムイオン二次電池用正極と、
負極と、
電解質と、
を備えている。
マグネシウム二次電池は、マグネシウムの二電子反応を利用できるため、高容量な二次電池として実用化が期待されている。しかし、2価のマグネシウムイオンと、活物質中の酸素イオンなどのアニオンとの相互作用が大きいため、マグネシウムイオンが活物質内を移動しにくく、活物質における電極反応が進みにくい。
本実施形態に係る正極活物質は、例えば、Mgを含有する原料と、遷移金属Mを含有する原料とを混合することによって製造される。
[3−1.全体構成]
本実施形態に係る正極活物質は、マグネシウム二次電池に利用されうる。マグネシウム二次電池は、正極活物質を含む正極と、負極と、マグネシウムイオン伝導性を有する電解質と、を備える。
正極21は、正極集電体12と、正極集電体12の上に配置された正極活物質層13と、を含む。正極活物質層13は、正極集電体12とセパレータ14との間に配置されている。
負極22は、例えば、負極活物質を含有する負極活物質層17と、負極集電体16とを含む。負極活物質層17は、負極集電体16とセパレータ14との間に配置されている。
セパレータ14の材料として、微多孔性薄膜、織布、及び不織布が挙げられる。セパレータ14の材料は、ポリプロピレン、ポリエチレンなどのポリオレフィンであってもよい。セパレータ14の厚さは、例えば、10μm以上300μm以下である。セパレータ14は、1種の材料で構成された単層膜であってもよく、2種以上の材料で構成された複合膜、又は、多層膜であってもよい。セパレータ14の空孔率は、例えば、30%以上70%以下である。
電解質は、マグネシウムイオン伝導性を有する材料でありうる。
本実施形態に係る正極活物質は、例えば、Mgを含有する酸化物と、Nbを含有する酸化物とを混合することによって製造される。
図3は、実施例に係るビーカーセルの概略構成を示す模式図である。
作製したマグネシウム二次電池の充放電試験は、アルゴン雰囲気下、温度60℃で実施した。
11 ケース
12 正極集電体
13 正極活物質層
14 セパレータ
15 封口板
16 負極集電体
17 負極活物質層
18 ガスケット
21 正極
22 負極
30 ビーカーセル
31 正極
32 アルミメッシュ
33 正極合剤
34 負極
35 非水電解液
Claims (4)
- 下記の組成式(1)により表される、マグネシウムイオン二次電池用正極活物質。
MgM2O6 ・・・(1)
[式(1)中、Mは、V、Nb、又はTaである。] - 前記Mは、Nbである、
請求項1に記載のマグネシウムイオン二次電池用正極活物質。 - 集電体と、
前記集電体の上に配置された請求項1又は2に記載のマグネシウムイオン二次電池用正極活物質と、
を含む、マグネシウムイオン二次電池用正極。 - 請求項3に記載のマグネシウムイオン二次電池用正極と、
負極と、
電解質と、
を備えた、マグネシウムイオン二次電池。
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CN116789448A (zh) * | 2022-03-14 | 2023-09-22 | 中国科学院上海硅酸盐研究所 | 一种中温烧结高q值微波介质材料及其制备方法和应用 |
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US10593996B2 (en) | 2017-08-24 | 2020-03-17 | Uchicago Argonne, Llc | Halogen-free electrolytes for magnesium batteries |
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CN116789448A (zh) * | 2022-03-14 | 2023-09-22 | 中国科学院上海硅酸盐研究所 | 一种中温烧结高q值微波介质材料及其制备方法和应用 |
CN116789448B (zh) * | 2022-03-14 | 2024-05-10 | 中国科学院上海硅酸盐研究所 | 一种中温烧结高q值微波介质材料及其制备方法和应用 |
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