JP7288442B2 - リチウムゲル電池における唯一のリチウム塩としての硝酸リチウムの使用 - Google Patents
リチウムゲル電池における唯一のリチウム塩としての硝酸リチウムの使用 Download PDFInfo
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- JP7288442B2 JP7288442B2 JP2020526416A JP2020526416A JP7288442B2 JP 7288442 B2 JP7288442 B2 JP 7288442B2 JP 2020526416 A JP2020526416 A JP 2020526416A JP 2020526416 A JP2020526416 A JP 2020526416A JP 7288442 B2 JP7288442 B2 JP 7288442B2
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- Prior art keywords
- lithium
- positive electrode
- gel
- electrolyte
- battery
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- IIPYXGDZVMZOAP-UHFFFAOYSA-N lithium nitrate Chemical compound [Li+].[O-][N+]([O-])=O IIPYXGDZVMZOAP-UHFFFAOYSA-N 0.000 title claims description 82
- 229910052744 lithium Inorganic materials 0.000 title claims description 54
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims description 37
- 229910003002 lithium salt Inorganic materials 0.000 title claims description 21
- 159000000002 lithium salts Chemical class 0.000 title claims description 21
- 239000011245 gel electrolyte Substances 0.000 claims description 37
- 239000003792 electrolyte Substances 0.000 claims description 21
- 239000000203 mixture Substances 0.000 claims description 20
- 229920000642 polymer Polymers 0.000 claims description 14
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 11
- 229920001577 copolymer Polymers 0.000 claims description 11
- 229910001416 lithium ion Inorganic materials 0.000 claims description 11
- 239000002904 solvent Substances 0.000 claims description 11
- 150000002500 ions Chemical class 0.000 claims description 10
- 239000005077 polysulfide Substances 0.000 claims description 10
- 229920001021 polysulfide Polymers 0.000 claims description 10
- 150000008117 polysulfides Polymers 0.000 claims description 10
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 8
- 239000007774 positive electrode material Substances 0.000 claims description 8
- 229910052717 sulfur Inorganic materials 0.000 claims description 8
- 239000011593 sulfur Substances 0.000 claims description 8
- 229910000733 Li alloy Inorganic materials 0.000 claims description 7
- 239000002131 composite material Substances 0.000 claims description 7
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- 239000001989 lithium alloy Substances 0.000 claims description 7
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- 238000009830 intercalation Methods 0.000 claims description 4
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 claims description 3
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- JDZCKJOXGCMJGS-UHFFFAOYSA-N [Li].[S] Chemical compound [Li].[S] JDZCKJOXGCMJGS-UHFFFAOYSA-N 0.000 description 5
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- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 2
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- RCIJMMSZBQEWKW-UHFFFAOYSA-N methyl propan-2-yl carbonate Chemical compound COC(=O)OC(C)C RCIJMMSZBQEWKW-UHFFFAOYSA-N 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 2
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- 239000007784 solid electrolyte Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 description 1
- VAYTZRYEBVHVLE-UHFFFAOYSA-N 1,3-dioxol-2-one Chemical compound O=C1OC=CO1 VAYTZRYEBVHVLE-UHFFFAOYSA-N 0.000 description 1
- WNXJIVFYUVYPPR-UHFFFAOYSA-N 1,3-dioxolane Chemical compound C1COCO1 WNXJIVFYUVYPPR-UHFFFAOYSA-N 0.000 description 1
- STMDPCBYJCIZOD-UHFFFAOYSA-N 2-(2,4-dinitroanilino)-4-methylpentanoic acid Chemical compound CC(C)CC(C(O)=O)NC1=CC=C([N+]([O-])=O)C=C1[N+]([O-])=O STMDPCBYJCIZOD-UHFFFAOYSA-N 0.000 description 1
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 1
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- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 229910032387 LiCoO2 Inorganic materials 0.000 description 1
- 229910010707 LiFePO 4 Inorganic materials 0.000 description 1
- 229910013275 LiMPO Inorganic materials 0.000 description 1
- 229910012752 LiNi0.5Mn0.5O2 Inorganic materials 0.000 description 1
- 229910003005 LiNiO2 Inorganic materials 0.000 description 1
- 229910002097 Lithium manganese(III,IV) oxide Inorganic materials 0.000 description 1
- 229910013315 LiyNi1 Inorganic materials 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
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- H01M4/02—Electrodes composed of, or comprising, active material
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- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
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- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
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- H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
- H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
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Description
- 多硫化物イオンを含まない;
- イオン伝導性を提供する唯一のリチウム塩として硝酸リチウムを含む;そして、
- 前記非水ゲル電解質は、本発明の第2の対象に従って定義される非水ゲル電解質であり、及び/又は、前記正極は、本発明の第3の対象に従って定義されるゲル正極である。
以下の構造を有する完全なセルを作製した:
- ポリエチレングリコールジメチルエーテル(PEGDME 240g/mol;TCIケミカルズ社が販売)中の硝酸リチウム(Alfa Aesar)の4.6M溶液を25g(すなわち、50重量%);
- PVdF Solef 21510(Solvay)を22.5g(すなわち、45重量%);
- ポリエチレンオキサイドコポリマー(ICPDAP;日本触媒社が販売)を2.5g(すなわち、5重量%)。
- Pulead社がLFP P600Aの商品名で販売するLiFePO4を29g(すなわち、58重量%);
- ポリエチレングリコールジメチルエーテル(PEGDME 240g/mol;TCIケミカルズ社が販売)中の硝酸リチウム(Alfa Aesar)の4.6M溶液を14g(すなわち、28重量%);
- PVdF Solef 21510(Solvay)を6g(すなわち、12重量%);
- Akzo Nobel社がKetjenblack(商標)EC600JDの商品名で販売するカーボンブラックを1g(すなわち、2重量%)。
負極として、厚さ100μmのリチウム金属の帯板(strip)を用いた。
以下の構造を有する完全なセルを作製した:
- ポリエチレングリコールジメチルエーテル(PEGDME 240g/mol;TCIケミカルズ社が販売)中の硝酸リチウム(Alfa Aesar)の1M溶液を25g(すなわち、50重量%);
- PVdF Solef 21510(Solvay)を22.5g(すなわち、45重量%);
- ポリエチレンオキサイドコポリマー(ICPDAP;日本触媒社が販売)を2.5g(すなわち、5重量%)。
- Pulead社がLFP P600Aの商品名で販売するLiFePO4を29g(すなわち、58重量%);
- ポリエチレングリコールジメチルエーテル(PEGDME 240g/mol;TCIケミカルズ社が販売)中の硝酸リチウム(Alfa Aesar)の1M溶液を14g(すなわち、28重量%);
- PVdF Solef 21510(Solvay)を6g(すなわち、12重量%);
- Akzo Nobel社がKetjenblack(商標)EC600JDの商品名で販売するカーボンブラックを1g(すなわち、2重量%)。
負極として、厚さ100μmのリチウム金属の帯板(strip)を用いた。
Claims (15)
- 少なくとも1つの正極、少なくとも1つの非水電解質、及び、リチウム金属又はリチウム合金をベースとする少なくとも1つの負極を備えたリチウム電池における、イオン伝導性を提供する唯一のリチウム塩としての硝酸リチウムの使用であって、
前記正極と前記電解質の両方がゲル化されており、
前記電池が多硫化物イオンを含まない、
前記電池の寿命を改善するための使用。 - 硝酸リチウムが、前記電池の第1の充放電サイクルの前に、非水ゲル電解質中及び/又は正極中に存在することを特徴とする請求項1に記載の使用。
- リチウムゲル電池用の非水ゲル電解質であって、
イオン伝導性を提供する唯一のリチウム塩としての硝酸リチウム、少なくとも1つの溶媒、及び、少なくとも1つのゲルポリマーを含むことを特徴とする電解質。 - 硝酸リチウムの量が、電解質の総重量に対して2重量%~70重量%の範囲内にあることを特徴とする請求項3に記載の電解質。
- 溶媒が、直鎖状のエーテル類、環状のエーテル類、カーボネート類、硫黄含有溶媒、直鎖状エステル類、環状エステル類、及び、ニトリル類から選択されることを特徴とする請求項3又は4に記載の電解質。
- ゲルポリマーが、ポリオレフィン;エチレンオキサイドのホモポリマー及びコポリマー並びにそれらの混合物;ハロゲン化ポリマー;スチレンのホモポリマー及びコポリマー並びにそれらの混合物;ビニルポリマー;アニオン性非電子伝導性ポリマー;ポリアクリレート;並びにそれらの混合物の1つから選択されることを特徴とする請求項3~5のいずれか一項に記載の電解質。
- ゲルポリマーが、前記電解質の総重量に対して、5重量%~60重量%であることを特徴とする請求項3~6のいずれか一項に記載の電解質。
- リチウムゲル電池用のゲル正極であって、
リチウムイオンを可逆的に挿入することが可能な少なくとも1つの正極活物質、イオン伝導性を提供する唯一のリチウム塩としての硝酸リチウム、及び、少なくとも1つのポリマーバインダーを含み、且つ、
請求項3~7のいずれか一項に記載の非水ゲル電解質を含むことを特徴とする正極。 - 硝酸リチウムの量が、ゲル正極の総重量に対して、0.5重量%~10重量%の範囲内にあることを特徴とする、請求項8に記載の正極。
- 硝酸リチウムを0.5mol/l~10mol/lの濃度で含む前記非水ゲル電解質を、10重量%~45重量%含むことを特徴とする請求項8又は9に記載の正極。
- 正極活物質が、ゲル正極の総重量に対して、55重量%~90重量%であることを特徴とする請求項8~10のいずれか一項に記載の正極。
- 集電体上に堆積されることを特徴とする請求項8~11のいずれか一項に記載の正極。
- 正極活物質がリン酸鉄リチウムから選択されることを特徴とする請求項8~12のいずれか一項に記載の正極。
- 正極、リチウム金属又はリチウム合金をベースとする負極、及び、前記正極と前記負極の間に配置された非水ゲル電解質を備えるリチウムゲル電池であって、以下を特徴とする電池:
- 多硫化物イオンを含まない;
- イオン伝導性を提供する唯一のリチウム塩として硝酸リチウムを含む;そして、
- 前記非水ゲル電解質は、請求項3~7のいずれか一項に定義される非水ゲル電解質であり、及び/又は、前記正極は、請求項8~13のいずれか一項に定義されるゲル正極である。 - 電池の{正極+非水ゲル電解質}複合体を構成する結合した構成要素中の硝酸リチウムの総量が、前記電池の前記複合体の総重量に対して、0.5重量%~30重量%の範囲内にあることを特徴とする請求項14に記載の電池。
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FR1760904A FR3073984B1 (fr) | 2017-11-20 | 2017-11-20 | Utilisation du nitrate de lithium en tant que seul sel de lithium dans une batterie au lithium gelifiee |
PCT/FR2018/052897 WO2019097190A1 (fr) | 2017-11-20 | 2018-11-19 | Utilisation du nitrate de lithium en tant que seul sel de lithium dans une batterie au lithium gelifiee |
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