CN209344257U - 一种钠离子电池 - Google Patents
一种钠离子电池 Download PDFInfo
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- CN209344257U CN209344257U CN201920275396.9U CN201920275396U CN209344257U CN 209344257 U CN209344257 U CN 209344257U CN 201920275396 U CN201920275396 U CN 201920275396U CN 209344257 U CN209344257 U CN 209344257U
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- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 229910001415 sodium ion Inorganic materials 0.000 title claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 17
- 239000007773 negative electrode material Substances 0.000 claims abstract description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 14
- 229910003168 MnCo2O4 Inorganic materials 0.000 claims abstract description 12
- 239000002131 composite material Substances 0.000 claims abstract description 12
- 239000006182 cathode active material Substances 0.000 claims abstract description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 8
- 239000010703 silicon Substances 0.000 claims abstract description 8
- 239000011734 sodium Substances 0.000 claims abstract description 8
- 229910004565 Na2Fe2(SO4)3 Inorganic materials 0.000 claims abstract description 7
- 239000005486 organic electrolyte Substances 0.000 claims abstract description 5
- 159000000000 sodium salts Chemical class 0.000 claims abstract description 5
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical class [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000007774 positive electrode material Substances 0.000 claims abstract description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical group [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 239000006260 foam Substances 0.000 claims description 3
- 229910017343 Fe2 (SO4)3 Inorganic materials 0.000 claims description 2
- 239000011152 fibreglass Substances 0.000 claims description 2
- 239000006183 anode active material Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 6
- 239000011149 active material Substances 0.000 abstract description 3
- 230000007423 decrease Effects 0.000 abstract description 2
- 229910000360 iron(III) sulfate Inorganic materials 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 229910052708 sodium Inorganic materials 0.000 description 5
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 108090000862 Ion Channels Proteins 0.000 description 2
- 102000004310 Ion Channels Human genes 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000007772 electrode material Substances 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 229910004563 Na2Fe2 (SO4)3 Inorganic materials 0.000 description 1
- 108010052164 Sodium Channels Proteins 0.000 description 1
- 102000018674 Sodium Channels Human genes 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009831 deintercalation Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 125000004436 sodium atom Chemical group 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Battery Electrode And Active Subsutance (AREA)
Abstract
本实用新型公开了一种钠离子电池，包括外壳、正极集流体、负极集流体、隔膜和钠盐有机电解质。其中，正极集流体和负极集流体包裹于外壳内两侧；正极集流体内涂布有所述Na2Fe2(SO4)3正极活性物质材料；负极集流体为具有多孔有序通透阵列结构的硅微通道板，其内覆盖MnCo2O4/graphene负极活性物质复合材料。Na2Fe2(SO4)3正极活性物质材料层和MnCo2O4/graphene负极活性物质材料层之间钠盐有机电解液；隔膜用于分隔钠离子电池的正极活性物质层和负极活性物质层。解决现有高负载量复合材料的钠离子电池在进行充放电时，活性物质容易团聚，导致电化学性能下降的问题。
Description
技术领域
本实用新型涉及一种钠离子电池。
背景技术
相比锂离子电池，钠离子电池具有较低的成本，碳酸钠价格仅为0.9-2.8元/公斤，钠资源地壳含量约为2.8%，而锂资源在地壳中的储量仅为0.0065%，更高的安全性能，钠离子电池成为科学家研究的热点，特别是基于多元复合氧化物的钠离子电池负极越来越受到关注，其中，多元复合氧化物材料电极材料作为负极，铁基材料作为正极，组装的钠离子电池成为研究的主要部分。现有的钠离子电池结构存在以下问题：一、高负载量多元复合氧化物材料团聚，降低了电极的电化学性能，破坏了电荷的存储能力。二、由于多元复合氧化物材料与电解质溶液的接触面较小，增大了内阻，降低电化学性能，严重的使得钠离子电池失效。
发明内容
发明目的：针对上述现有技术，提出一种钠离子电池，解决现有高负载量复合材料的钠离子电池在进行充放电时，活性物质容易团聚，导致电化学性能下降的问题。
技术方案：一种钠离子电池，包括外壳、正极集流体、负极集流体、Na2Fe2(SO4)3正极活性物质材料层、MnCo2O4/graphene负极活性物质材料层、隔膜和钠盐有机电解质；其中，所述正极集流体和负极集流体包裹于外壳内两侧；所述正极集流体内涂布有所述Na2Fe2(SO4)3正极活性物质材料；所述负极集流体为具有多孔有序通透阵列结构的硅微通道板，其内覆盖MnCo2O4/graphene负极活性物质复合材料；所述Na2Fe2(SO4)3正极活性物质材料层和MnCo2O4/graphene负极活性物质材料层之间钠盐有机电解液；所述隔膜为用于分隔钠离子电池的正极活性物质层和负极活性物质层。
进一步的，所述正极集流体为泡沫镍。
进一步的，所述硅微通道板的孔径尺寸长×宽×深为5×5×250mm。
进一步的，所述隔膜为玻璃纤维隔膜。
有益效果：Na2Fe2(SO4)3正极活性物质材料是一种优异的低成本铁基正极材料，共边的 [Fe2O10] 二聚体结构提供了三维离子通道结构富钠电极材料，利于钠离子的快速扩散。同时，电负性高的硫元素将铁元素限制在高自旋状态，同时c轴方向的钠离子通道方便钠原子快速的扩散。使得Fe+2/+4相变平台电压提高到3V以上，具有较高的可逆容量，能够容纳进行脱嵌的钠离子，是钠离子电池理想的正极材料。MnCo2O4/graphene为石墨烯复合多元氧化物材料，为尖晶石结构，具备三维离子扩散通道，能够实现钠离子在其中的可逆的嵌入和脱出。该复合材料的协同效应使得Mn+2/0/Co+3/0相变平台电压得到提高，因此是一类可提供高电压的钠离子负极材料。
本实用新型采用并联结构，利用Fe+2/+4/Mn+2/0/Co+3/0相变，实现钠离子在正负电极之间的嵌入和脱出，进行电池充放电。采用三维架构的MnCo2O4/graphene复合材料作为钠离子电池的负极，其具有的三维离子通道结构，可提高体系的离子扩散速率，既可以有效的提高电极与电解液的有效接触比表面积，又可以抑制石墨烯材料团聚，提高了负极的机械强度，力学性能，又可提高电荷的存储能力。从而改善钠离子电池的倍率性能和循环稳定性。
附图说明
图1是本实用新型钠离子电池的结构示意图。
具体实施方式
下面结合附图对本实用新型做更进一步的解释。
如图1所示，一种钠离子电池，包括外壳1、正极集流体2、负极集流体3、Na2Fe2(SO4)3正极活性物质材料层4、MnCo2O4/graphene负极活性物质材料层5、隔膜6和钠盐有机电解质7。其中，正极是泡沫镍作为集流体，负极是具有多孔有序通透阵列结构的硅微通道板为集流层，硅微通道板的孔径尺寸长×宽×深为5×5×250mm。正极集流体和负极集流体包裹于外壳内两侧，正极集流体内涂布有Na2Fe2(SO4)3正极活性物质材料，负极集流体内覆盖有MnCo2O4/graphene负极活性物质材料。Na2Fe2(SO4)3正极活性物质材料层和MnCo2O4/graphene负极活性物质材料层之间钠盐有机电解液。隔膜用于分隔钠离子电池的正极活性物质层和负极活性物质层。
本实用新型的钠离子电池，用于抑制高负载量多元氧化物复合材料团聚，增强电极的电化学性能，又提高电荷的存储能力。同时，镀镍硅微通道板作为集流体其三维有序多孔结构能够提供更多的电极活性物质和电解液接触面，增加离子和电子传输通道，解决了过高活性物质负载容易脱落的问题，提高了导电性。本实用新型即抑制了高负载量多元复合材料团聚，增强了电极的电化学性能，提高了电荷的存储能力。
以上所述仅是本实用新型的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本实用新型原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本实用新型的保护范围。
Claims (4)
1.一种钠离子电池，其特征在于：包括外壳、正极集流体、负极集流体、Na2Fe2(SO4)3正极活性物质材料层、MnCo2O4/graphene负极活性物质材料层、隔膜和钠盐有机电解质；其中，所述正极集流体和负极集流体包裹于外壳内两侧；所述正极集流体内涂布有所述Na2Fe2(SO4)3正极活性物质材料；所述负极集流体为具有多孔有序通透阵列结构的硅微通道板，其内覆盖MnCo2O4/graphene负极活性物质复合材料；所述Na2Fe2(SO4)3正极活性物质材料层和MnCo2O4/graphene负极活性物质材料层之间灌注有钠盐有机电解液；所述隔膜为用于分隔钠离子电池的正极活性物质层和负极活性物质层。
2.根据权利要求1所述的钠离子电池，其特征在于：所述正极集流体为泡沫镍。
3.根据权利要求1或2所述的钠离子电池，其特征在于：所述硅微通道板的孔径尺寸长×宽×深为5×5×250mm。
4.根据权利要求1或2所述的钠离子电池，其特征在于：所述隔膜为玻璃纤维隔膜。
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110931784A (zh) * | 2019-12-09 | 2020-03-27 | 苏州大学 | 铁基钠离子电池正极材料及其制备方法 |
| CN111063871A (zh) * | 2019-12-09 | 2020-04-24 | 苏州大学 | 一种钠离子全电池及其制备方法 |
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2019
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110931784A (zh) * | 2019-12-09 | 2020-03-27 | 苏州大学 | 铁基钠离子电池正极材料及其制备方法 |
| CN111063871A (zh) * | 2019-12-09 | 2020-04-24 | 苏州大学 | 一种钠离子全电池及其制备方法 |
| CN111063871B (zh) * | 2019-12-09 | 2020-11-24 | 苏州大学 | 一种钠离子全电池及其制备方法 |
| CN110931784B (zh) * | 2019-12-09 | 2020-11-24 | 苏州大学 | 铁基钠离子电池正极材料及其制备方法 |
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