JP5545123B2 - NaCrO2材、溶融塩電池及びNaCrO2材の製造方法 - Google Patents
NaCrO2材、溶融塩電池及びNaCrO2材の製造方法 Download PDFInfo
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- JP5545123B2 JP5545123B2 JP2010185401A JP2010185401A JP5545123B2 JP 5545123 B2 JP5545123 B2 JP 5545123B2 JP 2010185401 A JP2010185401 A JP 2010185401A JP 2010185401 A JP2010185401 A JP 2010185401A JP 5545123 B2 JP5545123 B2 JP 5545123B2
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- 150000003839 salts Chemical class 0.000 title claims description 63
- 239000000463 material Substances 0.000 title claims description 56
- 238000004519 manufacturing process Methods 0.000 title claims description 19
- 229910021271 NaCrO2 Inorganic materials 0.000 title 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 141
- 239000011163 secondary particle Substances 0.000 claims description 91
- 239000011164 primary particle Substances 0.000 claims description 67
- 239000007864 aqueous solution Substances 0.000 claims description 54
- 239000002245 particle Substances 0.000 claims description 41
- 238000001035 drying Methods 0.000 claims description 25
- 239000007774 positive electrode material Substances 0.000 claims description 20
- 239000003792 electrolyte Substances 0.000 claims description 10
- 238000005507 spraying Methods 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 5
- 239000011651 chromium Substances 0.000 description 34
- 229910001415 sodium ion Inorganic materials 0.000 description 20
- 239000007773 negative electrode material Substances 0.000 description 7
- 238000001694 spray drying Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 4
- 239000011149 active material Substances 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 239000008151 electrolyte solution Substances 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- BNOODXBBXFZASF-UHFFFAOYSA-N [Na].[S] Chemical compound [Na].[S] BNOODXBBXFZASF-UHFFFAOYSA-N 0.000 description 2
- 150000001450 anions Chemical class 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000012300 argon atmosphere Substances 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- VQWFNAGFNGABOH-UHFFFAOYSA-K chromium(iii) hydroxide Chemical compound [OH-].[OH-].[OH-].[Cr+3] VQWFNAGFNGABOH-UHFFFAOYSA-K 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000002296 dynamic light scattering Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000013081 microcrystal Substances 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- -1 potassium cations Chemical class 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000005368 silicate glass Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- ALMAEWAETUQTEP-UHFFFAOYSA-N sodium;chromium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Cr+3] ALMAEWAETUQTEP-UHFFFAOYSA-N 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
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Classifications
-
- 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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- Inorganic Compounds Of Heavy Metals (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Description
図1は、本発明の溶融塩電池の構成例を示す模式的断面図である。図1には、溶融塩電池を縦に切断した模式的断面図を示している。溶融塩電池は、上面が開口した直方体の箱状の電池容器51内に、正極1、セパレータ3及び負極2を並べて配置し、電池容器51に蓋部52を冠着して構成されている。正極1及び負極2は矩形平板状に形成されており、セパレータ3はシート状に形成されている。セパレータ3は正極1及び負極2の間に介装されている。正極1、セパレータ3及び負極2は、重ねられ、電池容器51の底面に対して縦に配置されている。
充填率=(平均一次粒子体積×平均一次粒子個数)/平均二次粒子体積
Cr(OH)3 +NaOH→NaCrO2 +2H2 O
12 正極材
2 負極
3 セパレータ
41 バネ
51 電池容器
52 蓋部
61 乾燥室
62、63 ノズル
Claims (7)
- 溶融塩電池の正極活物質であり、NaCrO2 を成分とする一次粒子が集合した二次粒子からなるNaCrO2 材であって、
前記二次粒子は顆粒状をなし、
前記二次粒子内のNaCrO2 の充填率は80%以下であること
を特徴とするNaCrO2 材。 - 前記一次粒子の平均粒径は、0.1μm以下であること
を特徴とする請求項1に記載のNaCrO2 材。 - 溶融塩を電解質として用いた溶融塩電池において、
請求項1又は2に記載のNaCrO2 材を主材料とした正極を備えることを特徴とする溶融塩電池。 - 溶融塩電池の正極活物質であり、NaCrO2 を成分とする一次粒子が集合した二次粒子からなるNaCrO2 材を製造する方法であって、
Cr(OH)3 の水溶液及びNaOHの水溶液を、噴霧後に混合されるように夫々噴霧することにより、Cr(OH)3 の水溶液及びNaOHの水溶液が混合した霧状の水溶液中でCr(OH)3 及びNaOHを反応させてNaCrO2 を生成させ、
前記水溶液を乾燥させることにより、NaCrO2 からなる一次粒子が顆粒状に集合した二次粒子を作成すること
を特徴とするNaCrO2 材の製造方法。 - 溶融塩電池の正極活物質であり、NaCrO2 を成分とする一次粒子が集合した二次粒子からなるNaCrO2 材を製造する方法であって、
Cr(OH)3 及びNaOHを溶解した水溶液を噴霧することにより、Cr(OH)3 及びNaOHが反応して生成したNaCrO2 を含む霧状の水溶液を生成し、
前記水溶液を乾燥させることにより、NaCrO2 からなる一次粒子が顆粒状に集合した二次粒子を作成すること
を特徴とするNaCrO2 材の製造方法。
- 前記Cr(OH)3 の水溶液のモル濃度よりも前記NaOHの水溶液のモル濃度を高くしておき、
前記二次粒子を水洗することにより、残留したNaOHを除去すること
を特徴とする請求項4に記載のNaCrO2 材の製造方法。 - 前記Cr(OH)3 及びNaOHを溶解した水溶液中でCr(OH)3 のモル濃度よりもNaOHのモル濃度を高くしておき、
前記二次粒子を水洗することにより、残留したNaOHを除去すること
を特徴とする請求項5に記載のNaCrO2 材の製造方法。
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JP2010185401A JP5545123B2 (ja) | 2010-08-20 | 2010-08-20 | NaCrO2材、溶融塩電池及びNaCrO2材の製造方法 |
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JP2012041237A JP2012041237A (ja) | 2012-03-01 |
JP5545123B2 true JP5545123B2 (ja) | 2014-07-09 |
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JP6046155B2 (ja) * | 2012-09-24 | 2016-12-14 | 日本化学工業株式会社 | 亜クロム酸ナトリウムの製造方法 |
JP2014175179A (ja) * | 2013-03-08 | 2014-09-22 | Sumitomo Electric Ind Ltd | ナトリウム溶融塩電池用正極活物質、ナトリウム溶融塩電池用正極およびナトリウム溶融塩電池 |
CN107785584A (zh) * | 2017-09-28 | 2018-03-09 | 西南大学 | 一种钠离子电池正极添加剂NaCrO2/C及其制备方法和应用 |
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US3933520A (en) * | 1975-04-03 | 1976-01-20 | The United States Of America As Represented By The United States Energy Research And Development Administration | Method of preparing electrodes with porous current collector structures and solid reactants for secondary electrochemical cells |
JP2823598B2 (ja) * | 1989-08-21 | 1998-11-11 | 日本化学工業株式会社 | クロム系スピネルおよびその製造法 |
JP2011192474A (ja) * | 2010-03-12 | 2011-09-29 | Sumitomo Electric Ind Ltd | 電池用負極材料、電池用負極前駆体材料、及び電池 |
KR101755727B1 (ko) * | 2010-04-27 | 2017-07-07 | 스미토모덴키고교가부시키가이샤 | 용융염 전지용 전극, 용융염 전지 및 전극의 제조 방법 |
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