JP2018500713A - 導電材の製造方法、これから製造された導電材及びこれを含むリチウム二次電池 - Google Patents
導電材の製造方法、これから製造された導電材及びこれを含むリチウム二次電池 Download PDFInfo
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- JP2018500713A JP2018500713A JP2017508002A JP2017508002A JP2018500713A JP 2018500713 A JP2018500713 A JP 2018500713A JP 2017508002 A JP2017508002 A JP 2017508002A JP 2017508002 A JP2017508002 A JP 2017508002A JP 2018500713 A JP2018500713 A JP 2018500713A
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- FRMOHNDAXZZWQI-UHFFFAOYSA-N lithium manganese(2+) nickel(2+) oxygen(2-) Chemical class [O-2].[Mn+2].[Ni+2].[Li+] FRMOHNDAXZZWQI-UHFFFAOYSA-N 0.000 description 1
- QEXMICRJPVUPSN-UHFFFAOYSA-N lithium manganese(2+) oxygen(2-) Chemical class [O-2].[Mn+2].[Li+] QEXMICRJPVUPSN-UHFFFAOYSA-N 0.000 description 1
- RSNHXDVSISOZOB-UHFFFAOYSA-N lithium nickel Chemical compound [Li].[Ni] RSNHXDVSISOZOB-UHFFFAOYSA-N 0.000 description 1
- ACFSQHQYDZIPRL-UHFFFAOYSA-N lithium;bis(1,1,2,2,2-pentafluoroethylsulfonyl)azanide Chemical compound [Li+].FC(F)(F)C(F)(F)S(=O)(=O)[N-]S(=O)(=O)C(F)(F)C(F)(F)F ACFSQHQYDZIPRL-UHFFFAOYSA-N 0.000 description 1
- VGYDTVNNDKLMHX-UHFFFAOYSA-N lithium;manganese;nickel;oxocobalt Chemical compound [Li].[Mn].[Ni].[Co]=O VGYDTVNNDKLMHX-UHFFFAOYSA-N 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- PYLWMHQQBFSUBP-UHFFFAOYSA-N monofluorobenzene Chemical compound FC1=CC=CC=C1 PYLWMHQQBFSUBP-UHFFFAOYSA-N 0.000 description 1
- 150000005181 nitrobenzenes Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- YGSFNCRAZOCNDJ-UHFFFAOYSA-N propan-2-one Chemical compound CC(C)=O.CC(C)=O YGSFNCRAZOCNDJ-UHFFFAOYSA-N 0.000 description 1
- 229920001384 propylene homopolymer Polymers 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 239000001008 quinone-imine dye Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004627 regenerated cellulose Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000007764 slot die coating Methods 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 150000003457 sulfones Chemical class 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 238000002076 thermal analysis method Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- BDZBKCUKTQZUTL-UHFFFAOYSA-N triethyl phosphite Chemical compound CCOP(OCC)OCC BDZBKCUKTQZUTL-UHFFFAOYSA-N 0.000 description 1
- NFMWFGXCDDYTEG-UHFFFAOYSA-N trimagnesium;diborate Chemical compound [Mg+2].[Mg+2].[Mg+2].[O-]B([O-])[O-].[O-]B([O-])[O-] NFMWFGXCDDYTEG-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 238000004832 voltammetry Methods 0.000 description 1
- PAPBSGBWRJIAAV-UHFFFAOYSA-N ε-Caprolactone Chemical compound O=C1CCCCCO1 PAPBSGBWRJIAAV-UHFFFAOYSA-N 0.000 description 1
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Abstract
Description
本出願は、2014年11月3日付韓国特許出願第2014-151273号に基づいた優先権の利益を主張し、当該韓国特許出願の文献に開示された全ての内容は、本明細書の一部として含まれる。
スーパーP(super PTM、Timcal社)10gを、2.45kHzの周波数と400Wの出力とを有するマイクロウエーブ発生装置に入れ、前記マイクロウエーブ発生装置の一側から空気を継続的に注入しつつ、マイクロウエーブを20秒間照射して導電材を製造した。このとき、マイクロウエーブ発生装置内の温度は500℃であった。
2.45kHzの周波数と400Wの出力とを有するマイクロウエーブを10秒間照射することを除き、前記製造例1と同一の方法で実施して導電材を製造した。このとき、マイクロウエーブ発生装置内の温度は350℃であった。
前記製造例1及び2で製造した導電材をそれぞれ利用して、リチウム二次電池用電極及びこれを含むリチウム二次電池を製造した。
導電材としてスーパーP(super PTM、Timcal社)を用いることを除き、前記実施例1と同一の方法で実施してリチウム二次電池用正極、及びこれを含むリチウム二次電池を製造した。
熱重量分析は、試料を与えられた温度条件で加熱した時の、温度変化に伴う試料の重量変化を測定して分析する方法である。
スーパーPに含まれ得る金属不純物であるFe、FeS、Cu及びZnに対し、マイクロウエーブを照射して約500℃で加熱した後、マイクロウエーブ照射前のFe、FeS、Cu及びZnと、マイクロウエーブ処理後の生成物とに対するX線回折分析結果をそれぞれ図5から図8に示した。
前記製造例1及び2で製造した導電材内金属不純物の酸化物形成に伴う安定性を評価するため、金属鉄(Fe)及び多様な組成で混合された鉄酸化物に対し、循環電圧電流法を利用してそれぞれの酸化還元電位を測定し、安定性を評価した。その結果を図9及び下記表2にそれぞれ示した。
スキャン速度:1mV/sec
sweep voltammetry:OCP/5V/2.5V
前記実施例1、2及び比較例1で製造したリチウム二次電池に対して電池特性を評価した。
Claims (19)
- 金属不純物を含む導電材に対しマイクロウエーブを照射して前記金属不純物を金属酸化物に転換することで、前記導電材内の金属不純物を除去する段階を含む導電材の製造方法。
- 前記マイクロウエーブの照射は、1kHzから50kHzの周波数及び400Wから2000Wの出力を有するマイクロウエーブを20秒以下で照射することで行われるものである請求項1に記載の導電材の製造方法。
- 前記マイクロウエーブの照射は、マイクロウエーブの照射によって前記金属不純物を含む導電材が350℃から600℃の温度で熱酸化されるようにする条件で行われるものである請求項1に記載の導電材の製造方法。
- 前記金属不純物は、金属、合金及びこれらの硫化物からなる群より選択されるいずれか一つまたは二つ以上を含み、
前記金属は、鉄、銅、亜鉛、カルシウム、チタン及びクロムからなる群より選択されるいずれか一つであり、さらに
前記合金は、鉄、銅、亜鉛、カルシウム、チタン及びクロムからなる群より選択される二つ以上の元素を含むものである請求項1に記載の導電材の製造方法。 - 前記金属不純物は、鉄、銅、亜鉛、カルシウム、チタン、クロム及び硫化鉄からなる群より選択されるいずれか一つまたは二つ以上を含むものである請求項1に記載の導電材の製造方法。
- 前記導電材は、炭素系物質である請求項1に記載の導電材の製造方法。
- 前記金属酸化物は、金属、合金及びこれらの硫化物からなる群より選択されるいずれか一つまたは二つ以上を含む金属不純物の酸化物であるものである請求項1に記載の導電材の製造方法。
- 前記金属酸化物は、鉄酸化物、硫化鉄酸化物、銅酸化物、亜鉛酸化物、カルシウム酸化物、チタン酸化物及びクロム酸化物からなる群より選択されるいずれか一つまたは二つ以上の混合物を含むものである請求項1に記載の導電材の製造方法。
- 請求項1に記載の製造方法によって製造された導電材。
- 前記導電材は炭素系物質を含み、さらに
金属不純物及び前記金属不純物の酸化物を0:100から0.5:99.5の重量比で含むものである請求項9に記載の導電材。 - 前記導電材の総重量に対して0.01重量%から1重量%の量で前記金属不純物の酸化物を含むものである請求項10に記載の導電材。
- 前記金属不純物は、金属、合金及びこれらの硫化物からなる群より選択されるいずれか一つまたは二つ以上を含み、
前記金属は、鉄、銅、亜鉛、カルシウム、チタン及びクロムからなる群より選択されるいずれか一つであり、
前記合金は、鉄、銅、亜鉛、カルシウム、チタン及びクロムからなる群より選択される二つ以上の元素を含むものである請求項10に記載の導電材。 - 前記金属不純物の酸化物は、鉄酸化物、硫化鉄酸化物、銅酸化物、亜鉛酸化物、カルシウム酸化物、チタン酸化物及びクロム酸化物からなる群より選択されるいずれか一つまたは二つ以上の混合物を含むものである請求項10に記載の導電材。
- 請求項9に記載の導電材を含むリチウム二次電池用電極。
- 正極、
負極、
前記正極と負極との間に介在されたセパレーター、及び
非水電解質を含み、
前記正極及び負極のうち少なくとも一つは請求項9に記載の導電材を含むものであるリチウム二次電池。 - 請求項15に記載のリチウム二次電池を単位セルで含む電池モジュール。
- 請求項16に記載の電池モジュールを含む電池パック。
- 中大型デバイスの電源として用いられるものである請求項17に記載の電池パック。
- 前記中大型デバイスは、電気自動車、ハイブリッド電気自動車、プラグインハイブリッド電気自動車及び電力貯蔵用システムからなる群より選択されるものである請求項18に記載の電池パック。
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