JP2013139371A - 硫黄−グラフェン複合材料の製造方法 - Google Patents
硫黄−グラフェン複合材料の製造方法 Download PDFInfo
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- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 140
- 239000002131 composite material Substances 0.000 title claims abstract description 62
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 83
- 239000000243 solution Substances 0.000 claims abstract description 83
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 72
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 38
- 239000011593 sulfur Substances 0.000 claims abstract description 38
- 239000006185 dispersion Substances 0.000 claims abstract description 29
- 239000011259 mixed solution Substances 0.000 claims abstract description 21
- 239000003638 chemical reducing agent Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims 1
- 238000000151 deposition Methods 0.000 abstract description 5
- 238000007670 refining Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 14
- 239000004094 surface-active agent Substances 0.000 description 12
- 239000002245 particle Substances 0.000 description 11
- QGJOPFRUJISHPQ-UHFFFAOYSA-N Carbon disulfide Chemical compound S=C=S QGJOPFRUJISHPQ-UHFFFAOYSA-N 0.000 description 6
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 5
- 229910001416 lithium ion Inorganic materials 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- DHCDFWKWKRSZHF-UHFFFAOYSA-N sulfurothioic S-acid Chemical compound OS(O)(=O)=S DHCDFWKWKRSZHF-UHFFFAOYSA-N 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 125000000524 functional group Chemical group 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 239000013504 Triton X-100 Substances 0.000 description 2
- 229920004890 Triton X-100 Polymers 0.000 description 2
- 238000007605 air drying Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000010406 cathode material Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000000859 sublimation Methods 0.000 description 2
- 230000008022 sublimation Effects 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- GPRLSGONYQIRFK-MNYXATJNSA-N triton Chemical group [3H+] GPRLSGONYQIRFK-MNYXATJNSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- NWZSZGALRFJKBT-KNIFDHDWSA-N (2s)-2,6-diaminohexanoic acid;(2s)-2-hydroxybutanedioic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O.NCCCC[C@H](N)C(O)=O NWZSZGALRFJKBT-KNIFDHDWSA-N 0.000 description 1
- BMYNFMYTOJXKLE-UHFFFAOYSA-N 3-azaniumyl-2-hydroxypropanoate Chemical compound NCC(O)C(O)=O BMYNFMYTOJXKLE-UHFFFAOYSA-N 0.000 description 1
- NWGKJDSIEKMTRX-AAZCQSIUSA-N Sorbitan monooleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O NWGKJDSIEKMTRX-AAZCQSIUSA-N 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- FGRVOLIFQGXPCT-UHFFFAOYSA-L dipotassium;dioxido-oxo-sulfanylidene-$l^{6}-sulfane Chemical compound [K+].[K+].[O-]S([O-])(=O)=S FGRVOLIFQGXPCT-UHFFFAOYSA-L 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000003411 electrode reaction Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- BEFDCLMNVWHSGT-UHFFFAOYSA-N ethenylcyclopentane Chemical compound C=CC1CCCC1 BEFDCLMNVWHSGT-UHFFFAOYSA-N 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004108 freeze drying Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- IKDUDTNKRLTJSI-UHFFFAOYSA-N hydrazine monohydrate Substances O.NN IKDUDTNKRLTJSI-UHFFFAOYSA-N 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 1
- 229940071870 hydroiodic acid Drugs 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000002563 ionic surfactant Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
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- 239000005486 organic electrolyte Substances 0.000 description 1
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- 150000008117 polysulfides Polymers 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000012279 sodium borohydride Substances 0.000 description 1
- 229910000033 sodium borohydride Inorganic materials 0.000 description 1
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 1
- 235000019345 sodium thiosulphate Nutrition 0.000 description 1
- 239000004334 sorbic acid Substances 0.000 description 1
- 229940075582 sorbic acid Drugs 0.000 description 1
- 235000010199 sorbic acid Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 238000009210 therapy by ultrasound Methods 0.000 description 1
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Abstract
【解決手段】本発明は、第一溶液及び該第一溶液に溶けた単体硫黄を含む硫黄溶液を提供する第一ステップと、第二溶液及び該第二溶液に溶けたグラフェンシートを含むグラフェン分散液を提供する第二ステップと、前記硫黄溶液を前記グラフェン分散液に添加して混合溶液を形成した後、前記単体硫黄を前記第二溶液から析出させて、前記グラフェンシートの表面に付着させ、硫黄−グラフェン複合材料を形成する第三ステップと、前記硫黄−グラフェン複合材料を分離して、純化して硫黄−グラフェン複合材料を得る第四ステップと、を含む。
【選択図】図1
Description
図1を参照すると、本実施例の硫黄−グラフェン複合材料の製造方法は、第一溶液及び該第一溶液に溶けた単体硫黄を含む硫黄溶液を提供する第一ステップと、第二溶液及び該第二溶液に溶けた複数のグラフェンシートを含むグラフェン分散液を提供する第二ステップと、前記硫黄溶液を前記グラフェン分散液に添加して混合溶液を形成した後、前記単体硫黄が前記第二溶液から析出して、前記複数のグラフェンシートの表面に付着し、硫黄−グラフェン複合材料を形成する第三ステップと、前記硫黄−グラフェン複合材料を分離して純化させる第四ステップと、を含む。
硫黄−グラフェン複合材料の製造方法は、昇華硫黄を原料として、濃度が40g/lのCS2溶液を提供するステップS31と、前記複数のグラフェンシートをエタノールの中に添加して、超音波処理した後、1wt%のグラフェン分散液を提供するステップS32と、前記CS2溶液を逐次前記グラフェン分散液中に添加して混合液を形成し、単体硫黄を前記混合液中から析出させた後、前記グラフェンシートの表面に付着させて、硫黄−グラフェン複合材料を形成するステップS33と、前記混合液から前記硫黄−グラフェン複合材料を分離して、乾燥させた後、硫黄−グラフェン複合材料を形成するステップS34と、を含む。図3に示したように、走査型電子顕微鏡(SEM)によって、前記硫黄−グラフェン複合材料を観察すると、前記複数の直径が小さい単体硫黄粒子が、均一に前記複数のグラフェンシートの表面に付着している。また、図4を参照すると、前記硫黄−グラフェン複合材料をリチウムイオン電池の陰極材料として利用した場合、前記リチウムイオン電池は、良好な容量維持率及び高い充放電効率を示すことができる。
実験例1と比べて、本実験例の硫黄−グラフェンシートの製造方法は、次の異なる点がある。第一に、CS2溶液の濃度は60g/lである。第二に、グラフェン分散液の濃度は0.5wt%であり、単体硫黄粒径は50nm〜200nmである。
図2を参照すると、本実施例の硫黄−グラフェン複合材料の製造方法は、第一溶液及び該第一溶液に溶けた単体硫黄を含む硫黄溶液を提供する第一ステップと、第二溶液及び該第二溶液に溶けた複数の酸化グラフェンシートを含む酸化グラフェン分散液を提供する第二ステップと、前記硫黄溶液を前記酸化グラフェン分散液に添加して混合溶液を形成した後、前記単体硫黄が前記第二溶液から分離して析出し、前記複数の酸化グラフェンシートの表面に付着し、硫黄−酸化グラフェン複合材料を形成する第三ステップと、前記混合溶液中に還元剤を添加することによって、前記複数の酸化グラフェンシートを還元して、硫黄−グラフェン複合材料を得る第四ステップと、前記硫黄−グラフェン複合材料を分離し、純化する第五ステップと、を含む。
本実験例の硫黄−グラフェン複合材料の製造方法は、昇華硫黄を原料として、濃度が40g/lのCS2溶液を配置するステップS51と、ハンマー(Hummers)法によって酸化グラフェン分散液を配置するステップS52と、前記CS2溶液を逐次前記酸化グラフェン分散液中に添加して混合液を形成し、単体硫黄を該混合液中から析出させた後、前記複数の酸化グラフェンシートの表面に付着させるステップS53と、ヒドラジン−水和物を前記混合液中に添加し、酸化グラフェンをグラフェンに還元するステップS54と、前記混合液から還元剤を含む混合液中の溶液を除去し、自然乾燥した後、硫黄−グラフェン複合材料を形成するステップS55と、を含む。前記硫黄−グラフェン複合材料における単体硫黄の粒径は、50nm〜80nmである。
Claims (2)
- 第一溶液及び該第一溶液に溶けた単体硫黄を含む硫黄溶液を提供する第一ステップと、
第二溶液及び該第二溶液に溶けた複数のグラフェンシートを含むグラフェン分散液を提供する第二ステップと、
前記硫黄溶液を前記グラフェン分散液に添加して混合溶液を形成した後、前記単体硫黄を前記第二溶液から析出させて、前記複数のグラフェンシートの表面に付着させ、硫黄−グラフェン複合材料を形成する第三ステップと、
前記硫黄−グラフェン複合材料を分離して、純化する第四ステップと、
を含むことを特徴とする硫黄−グラフェン複合材料の製造方法。 - 第一溶液及び該第一溶液に溶けた単体硫黄を含む硫黄溶液を提供する第一ステップと、
第二溶液及び該第二溶液に溶けた複数の酸化グラフェンシートを含む酸化グラフェン分散液を提供する第二ステップと、
前記硫黄溶液を前記酸化グラフェン分散液に添加して混合溶液を形成した後、前記単体硫黄を前記第二溶液から析出させて、前記複数の酸化グラフェンシートの表面に付着させ、硫黄−酸化グラフェン複合材料を形成する第三ステップと、
前記混合溶液の中に還元剤を添加し、前記複数の酸化グラフェンシートを還元して、硫黄−グラフェン複合材料を得る第四ステップと、
前記硫黄−グラフェン複合材料を分離して、純化する第五ステップと、
を含むことを特徴とする硫黄−グラフェン複合材料の製造方法。
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JP7144013B2 (ja) | 2017-06-05 | 2022-09-29 | 積水化学工業株式会社 | 硫黄-炭素材料複合体、リチウム硫黄二次電池用正極材及びリチウム硫黄二次電池 |
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US11945723B2 (en) | 2018-04-27 | 2024-04-02 | Nippon Shokubai Co., Ltd. | Method for producing carbon material complex |
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US20170054149A1 (en) | 2017-02-23 |
CN103187558A (zh) | 2013-07-03 |
JP5538498B2 (ja) | 2014-07-02 |
TWI455871B (zh) | 2014-10-11 |
US9923200B2 (en) | 2018-03-20 |
TW201326027A (zh) | 2013-07-01 |
US20130171355A1 (en) | 2013-07-04 |
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