JP2018535533A - 金属への固定が可能なポリビニリデンフルオライドを含有するバインダー及び関連するリチウムイオンバッテリー用電極 - Google Patents
金属への固定が可能なポリビニリデンフルオライドを含有するバインダー及び関連するリチウムイオンバッテリー用電極 Download PDFInfo
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- 239000011230 binding agent Substances 0.000 title claims abstract description 88
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 37
- 239000002184 metal Substances 0.000 title claims abstract description 37
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 20
- 239000002033 PVDF binder Substances 0.000 title abstract description 22
- 229920002981 polyvinylidene fluoride Polymers 0.000 title abstract description 21
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229920006243 acrylic copolymer Polymers 0.000 claims abstract description 22
- 125000000524 functional group Chemical group 0.000 claims abstract description 13
- 239000000178 monomer Substances 0.000 claims abstract description 9
- 229920000642 polymer Polymers 0.000 claims description 36
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 claims description 35
- 239000011149 active material Substances 0.000 claims description 19
- 229920001577 copolymer Polymers 0.000 claims description 13
- 239000000758 substrate Substances 0.000 claims description 11
- 239000006229 carbon black Substances 0.000 claims description 9
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910021450 lithium metal oxide Inorganic materials 0.000 claims description 5
- 125000005395 methacrylic acid group Chemical group 0.000 claims description 5
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 4
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 3
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 2
- 239000004917 carbon fiber Substances 0.000 claims description 2
- 150000001244 carboxylic acid anhydrides Chemical group 0.000 claims description 2
- 239000000571 coke Substances 0.000 claims description 2
- 125000003700 epoxy group Chemical group 0.000 claims description 2
- 125000004185 ester group Chemical group 0.000 claims description 2
- 230000001747 exhibiting effect Effects 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 2
- 125000000101 thioether group Chemical group 0.000 claims description 2
- 125000003396 thiol group Chemical group [H]S* 0.000 claims description 2
- 239000000203 mixture Substances 0.000 description 34
- 239000003792 electrolyte Substances 0.000 description 14
- 230000008961 swelling Effects 0.000 description 11
- 229920002125 Sokalan® Polymers 0.000 description 9
- 229910052782 aluminium Inorganic materials 0.000 description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 9
- 229920001519 homopolymer Polymers 0.000 description 9
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 6
- 229920006370 Kynar Polymers 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 5
- 239000000155 melt Substances 0.000 description 5
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 4
- 239000000806 elastomer Substances 0.000 description 4
- 239000000945 filler Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- 229920007457 Kynar® 720 Polymers 0.000 description 3
- 229920007859 Kynar® HSV 900 Polymers 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 229920002313 fluoropolymer Polymers 0.000 description 3
- 239000004811 fluoropolymer Substances 0.000 description 3
- CARJPEPCULYFFP-UHFFFAOYSA-N 5-Sulfo-1,3-benzenedicarboxylic acid Chemical class OC(=O)C1=CC(C(O)=O)=CC(S(O)(=O)=O)=C1 CARJPEPCULYFFP-UHFFFAOYSA-N 0.000 description 2
- 239000006245 Carbon black Super-P Substances 0.000 description 2
- 229910004764 HSV900 Inorganic materials 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 239000002318 adhesion promoter Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 229920001198 elastomeric copolymer Polymers 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 229920000058 polyacrylate Polymers 0.000 description 2
- 229920005596 polymer binder Polymers 0.000 description 2
- 239000002491 polymer binding agent Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- UUAGAQFQZIEFAH-UHFFFAOYSA-N chlorotrifluoroethylene Chemical group FC(F)=C(F)Cl UUAGAQFQZIEFAH-UHFFFAOYSA-N 0.000 description 1
- 239000011231 conductive filler Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- -1 hexafluoropropylene, trifluoroethylene Chemical group 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M methacrylate group Chemical group C(C(=C)C)(=O)[O-] CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 125000002560 nitrile group Chemical group 0.000 description 1
- 239000011255 nonaqueous electrolyte Substances 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 125000000547 substituted alkyl group Chemical group 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 230000004584 weight gain Effects 0.000 description 1
- 235000019786 weight gain Nutrition 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/621—Binders
- H01M4/622—Binders being polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08L27/16—Homopolymers or copolymers or vinylidene fluoride
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C09D127/16—Homopolymers or copolymers of vinylidene fluoride
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting paints
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
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- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
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- H01M4/02—Electrodes composed of, or comprising, active material
- 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
- H01M4/50—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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- 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
- H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
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- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
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Abstract
Description
・PVDF1:ASTM D3835に従って測定したときに、230℃及び100s−1で4450Pa.s〜5450Pa.sの間の溶融粘度を特徴とする、ビニリデンフルオライドホモポリマー。
調査した異なるバインダー組成は、下記の表1において照査されている。
それぞれ
・5重量%のPVDF1単独(表1の比較例1)、
・5重量%のPVDF2単独(表1の比較例2)、
・5重量%のPVDF3単独(表1の比較例3)、
・5重量%のKynar(R)HSV900とKynar(R)720PVDFとの混合物、
・90重量%のPVDF1及び10重量%のCMMからなる、PVDF1とCMMとからできた5重量%の混合物(表1の実施例2)並びに
・97.5重量%のPVDF1及び2.5重量%のCMMからなる、PVDF1とCMMとからできた5重量%の混合物(表1の実施例3)
を含有する、N−メチル−2−ピロリドン(NMP)の溶液の粘度を測定した。
カソードの調製のために、上記ポリマー型バインダーに加えて、
・UmicoreからMX10という名称で販売されている1:1:1のリチウム金属酸化物LiNMC、
・Timcalから販売されているカーボンブラックSuper P Li
という製品を使用した。
続いて、LiNMCとカーボンブラックとバインダーとの混合物から形成された層と、アルミニウムシートの間の付着を測定する。この測定を実施するために、幅25mmのストリップを切り出す。続いて、LiNMCとカーボンブラックとバインダーとからできたコーティングの面に堆積させた両面接着材を使用して、このストリップをアルミニウムプレートに接着する。はく離試験は、Synergie 200H型のMTS Systems製動力計を使用して、一方のあご部には、剛直なアルミニウムプレートを固定し、他方のあご部には、堆積が実施された柔軟なアルミニウムシートを固定することによって実施される。この構成において、はく離角度は、180℃である。あご部の変位速度は、100mm/分に設定されている。表1に明示のバインダー例を対象にした付着試験の結果は、下記の表3において照査されている。表3は、金属への親和力を示す又は金属に固定された状態になることができる官能基を含有するアクリルコポリマーがビニリデンフルオライドポリマーに付加されることによって、付着の改善が達成されることを示している。表3は、付着の改善が少なくとも部分的に、上記官能基に起因することも示している。最後に、表3の結果は、上記アクリルコポリマーの比率が、バインダーに対して少なくとも20重量%に及び得ること、及び、この比率が高いほど、付着がより良好になることを示している。しかしながら、上記のアクリルコポリマーの量の増大に関しては、重量によるこのアクリルポリマーの比率が10%に到達したときに、付着の改善の減少が認められる。
電解質に取り込まれたバインダーの重量を測定するための第1の段階は、バインダー不含のフィルムを調製するものである。この第1の段階のために、N−メチル−2−ピロリドンに溶かしたポリマー型バインダーの5重量%溶液を、ポリマー型バインダーが完全に溶解するまで調製する。ある量の溶液を、1平方センチメートル当たり約20ミリグラムの溶液を有するようにガラス製ペトリ皿に注ぎ込む。続いて、ペトリ皿を120℃のオーブンに終夜入れておくことによって、溶媒を蒸発させる。この結果、バインダーからできた乾燥フィルムが得られる。10平方センチメートルを切り出した。続いて、試料を秤量した。試料の重量は、W0として表されている。
Claims (9)
- 少なくとも1種のビニリデンフルオライドポリマーと、金属への親和力を示す又は金属に固定された状態になることができる官能基を含むモノマーを含む少なくとも1種のアクリルコポリマーとを含む、リチウムイオンバッテリーのためのバインダーであって、前記アクリルコポリマーが、メチルメタクリレートとメタクリル酸とのコポリマーであり、前記ビニリデンフルオライドポリマーが、5重量%の前記ビニリデンフルオライドポリマーを含有するN−メチル−2−ピロリドンの溶液が、せん断速度を毎分30回転に制御した状態で23℃において測定したときに、125mPa.s以上、好ましくは300mPa.s以上、有利には700mPa.s以上、かつ、1500mPa.s未満、好ましくは1200mPa.s未満の粘度を示すビニリデンフルオライドポリマーであることを特徴とする、バインダー。
- 前記ビニリデンフルオライドポリマーが、5重量%の前記ビニリデンフルオライドポリマーを含有するN−メチル−2−ピロリドンの前記溶液の前記粘度が、150mPa.sに等しい又は700mPa.sに等しい粘度であることを特徴とする、請求項1に記載のバインダー。
- 前記アクリルコポリマーが、カルボキシル基、カルボン酸無水物基、エポキシ基、メルカプト基、スルフィド基、フェノール基及びエステル基から選択される少なくとも1種類の官能基を含むモノマーを含むことを特徴とする、請求項1又は2に記載のバインダー。
- 前記アクリルコポリマーが、金属への親和力を示す又は金属に固定された状態になることができる官能基、特に10mol%のメタクリル酸基を有する10mol%のモノマーを含有することを特徴とする、請求項1から3のいずれか一項に記載のバインダー。
- 重量基準で、0.1%以上、かつ、25%以下、好ましくは20%以下、好ましくは10%未満の含量のアクリルコポリマーを含有することを特徴とする、請求項1から4のいずれか一項に記載のバインダー。
- 活物質及びバインダーを含有する基材の層によって少なくとも1つの面が被覆された金属集電体を含むタイプの、リチウムイオンバッテリーのための電極であって、前記バインダーが、請求項1から6のいずれか一項に記載のとおりであることを特徴とする、電極。
- 前記基材が、重量基準で、1%以上で5%以下、特に3%に等しい含量の前記バインダーを含有することを特徴とする、請求項8に記載の電極。
- 前記基材が、活物質として、リチウム金属酸化物及び任意選択的にカーボンブラックを含有することを特徴とする、請求項6又は7に記載の電極。
- 前記基材が、活物質として、コークス、カーボンブラック、黒鉛、活性炭及び炭素繊維から選択される少なくとも1種の成分を含有することを特徴とする、請求項8又は9に記載の電極。
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FR1561286A FR3044012B1 (fr) | 2015-11-24 | 2015-11-24 | Liant permettant de fixer un materiau contenant du poly fluorure de vinylidene sur un metal - electrode pour batterie lithium-ion associee |
FR1561286 | 2015-11-24 | ||
PCT/FR2016/052996 WO2017089683A1 (fr) | 2015-11-24 | 2016-11-17 | Liant contenant du poly fluorure de vinylidène capable de se fixer sur un métal et electrode pour batterie lithium-ion associée |
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CN112103509B (zh) * | 2020-08-20 | 2023-06-06 | 欣旺达电动汽车电池有限公司 | 正极集流体、正极片、锂离子电池及电池模组 |
US20240213483A1 (en) * | 2021-04-29 | 2024-06-27 | Arkema Inc. | Fluoropolymer and functional acrylic polymer blend as binder for electrochemical devices |
US20240317913A1 (en) * | 2021-04-29 | 2024-09-26 | Trinseo Europe Gmbh | High heat acrylic copolymers containing a functional comonomer as binders for batteries |
WO2023198717A1 (en) | 2022-04-12 | 2023-10-19 | Solvay Specialty Polymers Italy S.P.A. | Positive electrode binder for lithium ion batteries |
WO2024184368A1 (en) | 2023-03-09 | 2024-09-12 | Solvay Specialty Polymers Italy S.P.A. | Battery electrode and method of making the same |
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US20180355206A1 (en) | 2018-12-13 |
JP6856658B2 (ja) | 2021-04-07 |
FR3044012A1 (fr) | 2017-05-26 |
CN108291106B (zh) | 2021-01-05 |
EP3380575B1 (fr) | 2019-09-25 |
HUE046041T2 (hu) | 2020-01-28 |
EP3380575A1 (fr) | 2018-10-03 |
KR102698367B1 (ko) | 2024-08-22 |
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