JP6003008B2 - 酸化鉄ナノ粒子の製造方法 - Google Patents
酸化鉄ナノ粒子の製造方法 Download PDFInfo
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- 229940031182 nanoparticles iron oxide Drugs 0.000 title claims description 26
- 238000004519 manufacturing process Methods 0.000 title claims description 18
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 57
- 239000007864 aqueous solution Substances 0.000 claims description 35
- 238000000034 method Methods 0.000 claims description 25
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 20
- 239000002245 particle Substances 0.000 claims description 17
- 239000002105 nanoparticle Substances 0.000 claims description 15
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 12
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 12
- 235000011152 sodium sulphate Nutrition 0.000 claims description 12
- 239000000243 solution Substances 0.000 claims description 12
- 239000011734 sodium Substances 0.000 claims description 11
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 7
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 claims description 7
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 4
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 claims description 4
- 239000012265 solid product Substances 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 239000011259 mixed solution Substances 0.000 claims description 2
- DPEVZPUZFUDVTI-UHFFFAOYSA-M [O-2].[Fe+2].S(=O)(=O)([O-])O.[Na+] Chemical compound [O-2].[Fe+2].S(=O)(=O)([O-])O.[Na+] DPEVZPUZFUDVTI-UHFFFAOYSA-M 0.000 claims 1
- 238000005406 washing Methods 0.000 claims 1
- 239000007773 negative electrode material Substances 0.000 description 14
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- 229910044991 metal oxide Inorganic materials 0.000 description 9
- 150000004706 metal oxides Chemical class 0.000 description 9
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- 239000011230 binding agent Substances 0.000 description 6
- -1 black Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 6
- 239000004020 conductor Substances 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
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- 239000006245 Carbon black Super-P Substances 0.000 description 3
- 229910013870 LiPF 6 Inorganic materials 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
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- 239000004698 Polyethylene Substances 0.000 description 2
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- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
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- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 229920000265 Polyparaphenylene Polymers 0.000 description 1
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000006230 acetylene black Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
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- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
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- 235000010977 hydroxypropyl cellulose Nutrition 0.000 description 1
- 229910021506 iron(II) hydroxide Inorganic materials 0.000 description 1
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000006233 lamp black Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
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- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000011255 nonaqueous electrolyte Substances 0.000 description 1
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- 229920000098 polyolefin Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
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- 229920005989 resin Polymers 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
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- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
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- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 229920005608 sulfonated EPDM Polymers 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 description 1
- 239000006234 thermal black Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
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- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
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- C01G49/06—Ferric oxide [Fe2O3]
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Description
本発明では、塩化鉄(FeCl3)水溶液を製造する段階;水酸化ナトリウム(NaOH)水溶液を製造する段階;前記二つの水溶液を混合する段階;前記混合で製造された混合水溶液を撹拌しながら硫酸ナトリウム(Na2SO4)水溶液を添加する段階;及び前記硫酸ナトリウム水溶液が添加された混合水溶液を対流式電気オーブンで反応させる段階を含む酸化鉄(III)ナノ粒子の製造方法を提供する。
1−1.酸化鉄ナノ粒子の製造
反応器に2Mの塩化鉄(FeCl3)水溶液、6Mの水酸化ナトリウム(NaOH)水溶液、及び0.6Mの硫酸ナトリウム(Na2SO4)水溶液を体積比で10:9:1の割合で入れた後、インペラ(impeller)を利用して前記水溶液を均一に混合した。前記混合溶液を102℃の対流式電気オーブンに入れ、96時間の間反応して固体生成物を得た。
前記で製造された酸化鉄ナノ粒子、導電剤(Super−P)及びバインダー(KF 1100)を65:10:25の重量比(g)で混合してスラリーを製造し、このスラリーを鋼集電体にコーティングした後、120℃の真空オーブンで12時間以上乾燥させた。
前記実施例1−1で製造された酸化鉄ナノ粒子、導電剤(Super−P)及びバインダー(KF 1100)を40:30:30の重量比(g)で混合してスラリーを製造し、このスラリーを鋼集電体にコーティングした後、120℃の真空オーブンで12時間以上乾燥させた。
一般的な方法で製造された50nmの酸化鉄ナノ粒子、導電剤(Super−P)及びバインダー(KF 1100)を65:10:25の重量比(g)で混合してスラリーを製造し、このスラリーを鋼集電体にコーティングした後、120℃の真空オーブンで12時間以上乾燥させた。
前記実施例1、実施例2及び比較例1で製造された二次電池の性能評価を下記のように行った。電池等を2.0から0.005V(vs.Li/Li+)の充放電領域で10thの充放電を行い、このとき、電流密度は0.1Cであった。これらの初期充放電効率の結果を下記表1に示した。また、実施例2の電池を利用した充放電結果を図3のグラフに示した。
Claims (6)
- 塩化鉄(FeCl3)水溶液を製造する段階;
水酸化ナトリウム(NaOH)水溶液を製造する段階;
前記二つの水溶液を混合する段階;
前記混合で製造された混合水溶液を撹拌しながら硫酸ナトリウム(Na2SO4)水溶液を添加する段階;及び
前記硫酸ナトリウム水溶液が添加された混合水溶液を対流式電気オーブンで反応させる段階;を含み、
前記塩化鉄(FeCl 3 )水溶液の濃度は2Mから3Mで、
前記水酸化ナトリウム(NaOH)水溶液の濃度は5Mから6Mであり、
前記硫酸ナトリウム(Na 2 SO 4 )水溶液の濃度は0.5Mから1Mである酸化鉄(III)ナノ粒子の製造方法。 - 前記方法は、反応完了後得られた固体生成物を冷却し、洗浄及び乾燥する段階をさらに含む請求項1に記載の酸化鉄(III)ナノ粒子の製造方法。
- 前記塩化鉄水溶液:前記水酸化ナトリウム水溶液:前記硫酸ナトリウム水溶液の体積比は10:9:x(このとき、xは0<x<1)である請求項1または請求項2に記載の酸化鉄(III)ナノ粒子の製造方法。
- 前記反応させる段階は、100から105℃及び常圧下で90から150時間の間行われる請求項1から3のいずれか一項に記載の酸化鉄(III)ナノ粒子の製造方法。
- 前記酸化鉄ナノ粒子の長径及び短径は500nmから1μmである請求項1から4のいずれか一項に記載の酸化鉄(III)ナノ粒子の製造方法。
- 前記酸化鉄ナノ粒子は、丸い楕円形の粒子形態である請求項1から5のいずれか一項に記載の酸化鉄(III)ナノ粒子の製造方法。
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