JP7457145B2 - 人造黒鉛及びその製造方法、負極電極シート、二次電池、電池モジュール、電池パック及び電力消費装置 - Google Patents
人造黒鉛及びその製造方法、負極電極シート、二次電池、電池モジュール、電池パック及び電力消費装置 Download PDFInfo
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- 229910021389 graphene Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000003273 ketjen black Substances 0.000 description 1
- 239000011244 liquid electrolyte Substances 0.000 description 1
- 229910003473 lithium bis(trifluoromethanesulfonyl)imide Inorganic materials 0.000 description 1
- 229910000625 lithium cobalt oxide Inorganic materials 0.000 description 1
- DEUISMFZZMAAOJ-UHFFFAOYSA-N lithium dihydrogen borate oxalic acid Chemical compound B([O-])(O)O.C(C(=O)O)(=O)O.C(C(=O)O)(=O)O.[Li+] DEUISMFZZMAAOJ-UHFFFAOYSA-N 0.000 description 1
- 229910002102 lithium manganese oxide Inorganic materials 0.000 description 1
- FRMOHNDAXZZWQI-UHFFFAOYSA-N lithium manganese(2+) nickel(2+) oxygen(2-) Chemical compound [O-2].[Mn+2].[Ni+2].[Li+] FRMOHNDAXZZWQI-UHFFFAOYSA-N 0.000 description 1
- MHCFAGZWMAWTNR-UHFFFAOYSA-M lithium perchlorate Chemical compound [Li+].[O-]Cl(=O)(=O)=O MHCFAGZWMAWTNR-UHFFFAOYSA-M 0.000 description 1
- 229910001486 lithium perchlorate Inorganic materials 0.000 description 1
- 229910001496 lithium tetrafluoroborate Inorganic materials 0.000 description 1
- VDVLPSWVDYJFRW-UHFFFAOYSA-N lithium;bis(fluorosulfonyl)azanide Chemical compound [Li+].FS(=O)(=O)[N-]S(F)(=O)=O VDVLPSWVDYJFRW-UHFFFAOYSA-N 0.000 description 1
- IGILRSKEFZLPKG-UHFFFAOYSA-M lithium;difluorophosphinate Chemical compound [Li+].[O-]P(F)(F)=O IGILRSKEFZLPKG-UHFFFAOYSA-M 0.000 description 1
- DVATZODUVBMYHN-UHFFFAOYSA-K lithium;iron(2+);manganese(2+);phosphate Chemical compound [Li+].[Mn+2].[Fe+2].[O-]P([O-])([O-])=O DVATZODUVBMYHN-UHFFFAOYSA-K 0.000 description 1
- BFZPBUKRYWOWDV-UHFFFAOYSA-N lithium;oxido(oxo)cobalt Chemical compound [Li+].[O-][Co]=O BFZPBUKRYWOWDV-UHFFFAOYSA-N 0.000 description 1
- VLXXBCXTUVRROQ-UHFFFAOYSA-N lithium;oxido-oxo-(oxomanganiooxy)manganese Chemical compound [Li+].[O-][Mn](=O)O[Mn]=O VLXXBCXTUVRROQ-UHFFFAOYSA-N 0.000 description 1
- URIIGZKXFBNRAU-UHFFFAOYSA-N lithium;oxonickel Chemical compound [Li].[Ni]=O URIIGZKXFBNRAU-UHFFFAOYSA-N 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910021382 natural graphite Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000009702 powder compression Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000002153 silicon-carbon composite material Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 1
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000002076 thermal analysis method Methods 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- ZSDSQXJSNMTJDA-UHFFFAOYSA-N trifluralin Chemical compound CCCN(CCC)C1=C([N+]([O-])=O)C=C(C(F)(F)F)C=C1[N+]([O-])=O ZSDSQXJSNMTJDA-UHFFFAOYSA-N 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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Description
人造黒鉛
人造黒鉛の製造方法
二次電池
[負極電極シート]
[正極電極シート]
[電解質]
[セパレータ]
電力消費装置
実施例
実施例1
(1)人造黒鉛の製造
(2)負極電極シートの製造
(3)正極電極シートの製造
(4)電解液の調製
(5)セパレータの製造
(6)二次電池の製造
実施例2
実施例3
実施例4
比較例1
比較例2
比較例3
比較例4
比較例5
実施例5
比較例6
(1)負極電極シートの製造
(2)正極電極シートの製造
(3)電解液の調製
(4)セパレータの製造
(5)二次電池の製造
性能テスト
(1)人造黒鉛の空気酸化ピークのピーク温度Tpeakのテスト
(2)急速充電性能テスト
(3)循環性能テスト
Claims (19)
- 粒径Dv50が≦16μmであり、且つ空気酸化ピークのピーク温度Tpeakが≧830℃であり、且つ表面には無定形炭素被覆層を有しない人造黒鉛であって、
前記人造黒鉛の空気酸化ピークのピーク温度Tpeakは、前記人造黒鉛を秤量質量10±0.05mg、空気をパージガスとして且つ気流速度60mL/min、昇温速度5℃/min、テスト温度範囲40℃~950℃の条件下で熱重量分析を行って得られた示差熱重量分析曲線の最大ピークのピーク温度を指す、
人造黒鉛。 - 前記人造黒鉛の粒径Dv50が13μm~16μmである、
請求項1に記載の人造黒鉛。 - 前記人造黒鉛の空気酸化ピークのピーク温度Tpeakが830℃~840℃である、
請求項1又は2に記載の人造黒鉛。 - 前記人造黒鉛は、下記(1)~(7)のうちの1つ又は複数を満たす、請求項1~3のいずれか1項に記載の人造黒鉛。
(1)前記人造黒鉛の粒径Dv10が≧5μmである。
(2)前記人造黒鉛の比表面積が0.8m2/g~1.1m2/gである。
(3)前記人造黒鉛のタップ密度が≧1g/cm3である。
(4)前記人造黒鉛の20000N作用力での粉末圧縮密度が≧1.6g/cm3である。
(5)前記人造黒鉛の50000N作用力での粉末圧縮密度≧1.7g/cm3である。
(6)前記人造黒鉛のグラム容量が≧353mAh/gである。
(7)前記人造黒鉛の1回目のクーロン効率が≧95%である。 - 請求項1~4のいずれか1項に記載の人造黒鉛を製造する方法であって、
揮発成分を含有する生コークス粉末を提供するステップS10と、
生コークス粉末に対して熱蒸着処理を行い、生コークス粉末のうちの少なくとも一部の揮発成分を生コークス粉末の表面に蒸着させるステップS20と、
熱蒸着処理を経た生コークス粉末に対して黒鉛化処理を行うステップS30と、
降温して排出し、粒径Dv50が≦16μmであり、空気酸化ピークのピーク温度Tpeakが≧830℃であり、且つ表面には無定形炭素被覆層を有しない人造黒鉛を得るステップS40と、を含み、
前記人造黒鉛の空気酸化ピークのピーク温度Tpeakは、前記人造黒鉛を秤量質量10±0.05mg、空気をパージガスとして且つ気流速度60mL/min、昇温速度5℃/min、テスト温度範囲40℃~950℃の条件下で熱重量分析を行って得られた示差熱重量分析曲線の最大ピークのピーク温度を指す、
方法。 - ステップS10において、提供された生コークス粉末に含有される揮発成分の質量含有量が≧8.5%である、
請求項5に記載の方法。 - ステップS10において、提供された生コークス粉末の粒径Dv10が≧3.0μmである、
請求項5又は6に記載の方法。 - ステップS10において、提供された生コークス粉末の粒径Dv50が≦16μmである、
請求項5~7のいずれか1項に記載の方法。 - ステップS10において、揮発成分を含有する生コークス粉末を提供する方法は、
生コークス原料をコークス化処理して生コークスを得て、得られた生コークスを粉砕処理して生コークス粉末を得るステップを含む、
請求項5~8のいずれか1項に記載の方法。 - 生コークス原料をコークス化処理する温度が≦550℃であり、及び/又は、
生コークス原料をコークス化処理する予熱処理時間が≧5hである、
請求項9に記載の方法。 - ステップS10において、揮発成分を含有する生コークス粉末、又は揮発成分を含有する生コークス粉末とピッチ粉末との混合物を提供する、
請求項5~10のいずれか1項に記載の方法。 - ステップS20において、熱蒸着の温度が250℃~700℃である、
請求項5~11のいずれか1項に記載の方法。 - ステップS30において、黒鉛化処理の温度が2800℃~3000℃である、
請求項5~12のいずれか1項に記載の方法。 - ステップS40において、排出温度が≦350℃である、
請求項5~13のいずれか1項に記載の方法。 - 請求項1~4のいずれか1項に記載の人造黒鉛を含む、負極電極シート。
- 請求項15に記載の負極電極シートを含む、二次電池。
- 請求項16に記載の二次電池を含む、電池モジュール。
- 請求項16に記載の二次電池、請求項17に記載の電池モジュールのうちの一つを含む、電池パック。
- 請求項16に記載の二次電池、請求項17に記載の電池モジュール、請求項18に記載の電池パックのうちの少なくとも一つを含む、電力消費装置。
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JP2001229914A (ja) | 2000-02-10 | 2001-08-24 | Toyo Tanso Kk | 負極及び二次電池 |
WO2012039477A1 (ja) | 2010-09-24 | 2012-03-29 | 日立化成工業株式会社 | リチウムイオン電池、及びそれを利用した電池モジュール |
CN104685680A (zh) | 2012-09-27 | 2015-06-03 | 昭和电工株式会社 | 锂离子二次电池负极用碳材料及其制造方法以及用途 |
JP2017045574A (ja) | 2015-08-25 | 2017-03-02 | 三菱化学株式会社 | 炭素材、及び、非水系二次電池 |
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US20070092429A1 (en) * | 2005-10-24 | 2007-04-26 | Conocophillips Company | Methods of preparing carbon-coated particles and using same |
KR20220041903A (ko) * | 2019-12-03 | 2022-04-01 | 컨템포러리 엠퍼렉스 테크놀로지 씨오., 리미티드 | 인조 흑연, 이차 전지, 제조 방법 및 장치 |
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JP2001229914A (ja) | 2000-02-10 | 2001-08-24 | Toyo Tanso Kk | 負極及び二次電池 |
WO2012039477A1 (ja) | 2010-09-24 | 2012-03-29 | 日立化成工業株式会社 | リチウムイオン電池、及びそれを利用した電池モジュール |
CN104685680A (zh) | 2012-09-27 | 2015-06-03 | 昭和电工株式会社 | 锂离子二次电池负极用碳材料及其制造方法以及用途 |
JP2017045574A (ja) | 2015-08-25 | 2017-03-02 | 三菱化学株式会社 | 炭素材、及び、非水系二次電池 |
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WO2023023926A1 (zh) | 2023-03-02 |
US20230282829A1 (en) | 2023-09-07 |
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