JP7039775B2 - 長寿命に適合した二次電池用電極の製造方法 - Google Patents
長寿命に適合した二次電池用電極の製造方法 Download PDFInfo
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- JP7039775B2 JP7039775B2 JP2019505228A JP2019505228A JP7039775B2 JP 7039775 B2 JP7039775 B2 JP 7039775B2 JP 2019505228 A JP2019505228 A JP 2019505228A JP 2019505228 A JP2019505228 A JP 2019505228A JP 7039775 B2 JP7039775 B2 JP 7039775B2
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- 238000001179 sorption measurement Methods 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 description 1
- 229920005608 sulfonated EPDM Polymers 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 description 1
- QHGNHLZPVBIIPX-UHFFFAOYSA-N tin(II) oxide Inorganic materials [Sn]=O QHGNHLZPVBIIPX-UHFFFAOYSA-N 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 150000003623 transition metal compounds Chemical class 0.000 description 1
- 229910000314 transition metal oxide Inorganic materials 0.000 description 1
- BDZBKCUKTQZUTL-UHFFFAOYSA-N triethyl phosphite Chemical compound CCOP(OCC)OCC BDZBKCUKTQZUTL-UHFFFAOYSA-N 0.000 description 1
- 229910001935 vanadium oxide Inorganic materials 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
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Description
[実施例1]
アモルファスセレニウムナノ粒子とカーボンナノ粒子の自己集合を通じてセレニウム‐カーボン粒子を生成した。リチウム‐ニッケル‐マンガン‐コバルト系の活物質を製造するために遷移金属の前駆体として混合の酸水化物のMOOH(M=Ni4/15(Mn1/2Ni1/2)8/15Co0.2)を使用し、前記の混合酸水化物Li2Co3を化学量論的比(Li:M 1.02:1)で混合した後、混合物を空気中900℃で10時間中焼結してリチウム混合遷移金属酸化物を製造した。前記リチウム混合遷移金属化合物とLi2CoO2を20:80に混合した正極活物質95.1重量%と平均粒径が35nmであり、DBP吸着値が360ml/100である多孔質導電材0.9重量%のバインダーとしてポリフッ化ビニリデン(polyvinylidene fluoride、PVdF)2重量%を混合して正極合剤を製造した後、これを80nmセレニウム‐カーボン粒子2重量%とNMP(N‐methlypyrrolidone)を添加して正極合剤スラリーを製造した。これらの正極合剤スラリーを金属の集電体的なアルミホイルにコーティングした後、100℃の真空オーブンで2時間以上乾燥して正極を製造した。
[実施例2]
150nmセレニウム‐カーボン粒子を使用したことを除いては、前記の実施例1と同じ方法で正極を製造した。
[実施例3]
250nmセレニウム‐カーボン粒子を使用したことを除いては、前記の実施例1と同じ方法で正極を製造した。
[実施例4]
150nmセレニウム‐カーボン粒子を使用して、90℃で乾燥したことを除いては、前記の実施例1と同じ方法で正極を製造した。
[実施例5]
150nmセレニウム‐カーボン粒子を使用して、110℃で乾燥したことを除いては、前記の実施例1と同じ方法で正極を製造した。
[比較例1]
セレニウム‐カーボン粒子を使用しないことを除いては、前記の実施例1と同じ方法で正極を製造した。
前記の実施例1~5及び比較例1からそれぞれ製造された正極の電解液の含浸速度を測定し、その結果を下記表1に示した。
Claims (2)
- バインダーを溶媒に分散または溶解させてバインダー溶液を製造する段階と、
前記バインダー溶液と電極活物質、導電材及びセレニウム‐カーボン粒子を包含する電極材を混合して電極スラリーを製造する段階と、
前記電極スラリーを集電体上にコーティングする段階と、
前記コーティングを乾燥しながらセレニウム‐カーボン粒子中のアモルファスセレニウムナノ粒子を気化させてコーティング層に中空カーボンナノ粒子を形成する段階と、を備え、
前記セレニウム‐カーボン粒子は、コアはセレニウム、シェルはカーボンである構造を有し、アモルファスセレニウムナノ粒子とカーボンナノ粒子の自己集合を利用して合成されることを特徴とするリチウム二次電池用電極の製造方法。 - 前記アモルファスセレニウムナノ粒子は、90~110℃で気化されることを特徴とする、請求項1記載のリチウム二次電池用電極の製造方法。
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CN109565029A (zh) | 2019-04-02 |
KR20180091413A (ko) | 2018-08-16 |
CN109565029B (zh) | 2021-11-26 |
JP2019527917A (ja) | 2019-10-03 |
EP3483951A4 (en) | 2019-09-04 |
EP3483951B1 (en) | 2021-09-29 |
WO2018147558A1 (ko) | 2018-08-16 |
US20190165367A1 (en) | 2019-05-30 |
KR102172848B1 (ko) | 2020-11-02 |
US10790499B2 (en) | 2020-09-29 |
PL3483951T3 (pl) | 2022-02-21 |
EP3483951A1 (en) | 2019-05-15 |
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