JP6860624B2 - 二次電池用負極活物質及びその方法 - Google Patents
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- 239000007773 negative electrode material Substances 0.000 title description 9
- 238000000034 method Methods 0.000 title description 4
- 239000002409 silicon-based active material Substances 0.000 claims description 60
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 59
- 229910052710 silicon Inorganic materials 0.000 claims description 45
- 239000010703 silicon Substances 0.000 claims description 45
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 35
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 34
- 239000001301 oxygen Substances 0.000 claims description 32
- 229910052760 oxygen Inorganic materials 0.000 claims description 32
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 30
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 23
- 229910052799 carbon Inorganic materials 0.000 claims description 18
- 239000002245 particle Substances 0.000 claims description 15
- 239000002131 composite material Substances 0.000 claims description 14
- 230000001590 oxidative effect Effects 0.000 claims description 8
- 229910003481 amorphous carbon Inorganic materials 0.000 claims description 4
- 229910044991 metal oxide Inorganic materials 0.000 claims description 3
- 150000004706 metal oxides Chemical class 0.000 claims description 3
- 239000011163 secondary particle Substances 0.000 claims description 2
- 238000005054 agglomeration Methods 0.000 claims 1
- 230000002776 aggregation Effects 0.000 claims 1
- 239000011856 silicon-based particle Substances 0.000 description 21
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 12
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 12
- 239000011159 matrix material Substances 0.000 description 10
- 238000007254 oxidation reaction Methods 0.000 description 9
- 229910052744 lithium Inorganic materials 0.000 description 8
- 230000003647 oxidation Effects 0.000 description 8
- 239000002904 solvent Substances 0.000 description 8
- 230000008859 change Effects 0.000 description 7
- 230000014759 maintenance of location Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 239000011149 active material Substances 0.000 description 5
- 238000007599 discharging Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- -1 silicon (Si) Chemical compound 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 210000004027 cell Anatomy 0.000 description 3
- 239000011258 core-shell material Substances 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 238000005468 ion implantation Methods 0.000 description 3
- 230000002427 irreversible effect Effects 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 239000011362 coarse particle Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000000280 densification Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- QOSATHPSBFQAML-UHFFFAOYSA-N hydrogen peroxide;hydrate Chemical compound O.OO QOSATHPSBFQAML-UHFFFAOYSA-N 0.000 description 2
- 239000012046 mixed solvent Substances 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 229920002239 polyacrylonitrile Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 2
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 2
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 239000011164 primary particle Substances 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 239000002210 silicon-based material Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910021383 artificial graphite Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000002388 carbon-based active material Substances 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical class [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 229910021384 soft carbon Inorganic materials 0.000 description 1
- 239000007784 solid electrolyte Substances 0.000 description 1
- SKRWFPLZQAAQSU-UHFFFAOYSA-N stibanylidynetin;hydrate Chemical compound O.[Sn].[Sb] SKRWFPLZQAAQSU-UHFFFAOYSA-N 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- OWOMRZKBDFBMHP-UHFFFAOYSA-N zinc antimony(3+) oxygen(2-) Chemical compound [O--].[Zn++].[Sb+3] OWOMRZKBDFBMHP-UHFFFAOYSA-N 0.000 description 1
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- H—ELECTRICITY
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- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
- H01M4/386—Silicon or alloys based on silicon
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- H—ELECTRICITY
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- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
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- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
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- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/18—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
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Description
Claims (9)
- シリコンと、前記シリコンの少なくとも一部が酸化されて形成されたシリコン酸化物とを含む、シリコン系活物質複合体であって、
前記シリコン系活物質複合体は、前記シリコンのコアと、前記コアを取り囲むシリコン酸化物のシェルとを有する粒子を含み、
前記シリコンのコアは、低い結晶性を有し、
前記シリコン及び前記シリコン酸化物の総重量に対する酸素の含量は、9重量%ないし20重量%に制限され、
前記シリコン系活物質複合体の平均直径は、30nmないし300nmの範囲内であるシリコン系活物質複合体。 - 前記シリコン系活物質複合体の平均直径は、30nmないし200nmの範囲内である、請求項1に記載のシリコン系活物質複合体。
- 前記シリコン系活物質複合体の外殻に導電層が形成された、請求項1に記載のシリコン系活物質複合体。
- 前記導電層は、炭素系導電層を含む、請求項3に記載のシリコン系活物質複合体。
- 前記導電層は、導電性金属酸化物粒子を含む、請求項3に記載のシリコン系活物質複合体。
- 前記導電層は、非晶質炭素膜を含む、請求項3に記載のシリコン系活物質複合体。
- 前記導電層は、結晶質炭素膜を含む、請求項3に記載のシリコン系活物質複合体。
- 前記導電層は、sp2炭素とsp3炭素とを含み、前記sp2炭素のモル分率は、前記sp3炭素のモル分率よりも大きい、請求項3に記載のシリコン系活物質複合体。
- 請求項1に記載のシリコンのコアとシリコン酸化物のシェルとを有する粒子の凝集から得られる二次粒子。
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KR1020140042226A KR101567203B1 (ko) | 2014-04-09 | 2014-04-09 | 이차 전지용 음극 활물질 및 이의 방법 |
KR10-2014-0042226 | 2014-04-09 |
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JP2019194993A JP2019194993A (ja) | 2019-11-07 |
JP6860624B2 true JP6860624B2 (ja) | 2021-04-21 |
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JP2019126776A Active JP6860624B2 (ja) | 2014-04-09 | 2019-07-08 | 二次電池用負極活物質及びその方法 |
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US (2) | US10396355B2 (ja) |
EP (1) | EP3131141B1 (ja) |
JP (2) | JP6556219B2 (ja) |
KR (1) | KR101567203B1 (ja) |
CN (2) | CN111261865B (ja) |
WO (1) | WO2015156620A1 (ja) |
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GB2492167C (en) | 2011-06-24 | 2018-12-05 | Nexeon Ltd | Structured particles |
KR20140133529A (ko) | 2012-01-30 | 2014-11-19 | 넥세온 엘티디 | 에스아이/씨 전기활성 물질의 조성물 |
KR101567203B1 (ko) | 2014-04-09 | 2015-11-09 | (주)오렌지파워 | 이차 전지용 음극 활물질 및 이의 방법 |
KR101604352B1 (ko) | 2014-04-22 | 2016-03-18 | (주)오렌지파워 | 음극 활물질 및 이를 포함하는 리튬 이차 전지 |
KR101550781B1 (ko) | 2014-07-23 | 2015-09-08 | (주)오렌지파워 | 2 차 전지용 실리콘계 활물질 입자의 제조 방법 |
GB2533161C (en) | 2014-12-12 | 2019-07-24 | Nexeon Ltd | Electrodes for metal-ion batteries |
KR101614016B1 (ko) | 2014-12-31 | 2016-04-20 | (주)오렌지파워 | 실리콘계 음극 활물질 및 이의 제조 방법 |
KR101726037B1 (ko) | 2015-03-26 | 2017-04-11 | (주)오렌지파워 | 실리콘계 음극 활물질 및 이의 제조 방법 |
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US10396355B2 (en) | 2019-08-27 |
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US10693134B2 (en) | 2020-06-23 |
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