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Article(id=1193556932804965305, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1193556932167431095, articleNumber=null, orderNo=null, doi=10.16790/j.cnki.1009-9239.im.2025.04.005, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1730044800000, receivedDateStr=2024-10-28, revisedDate=1736179200000, revisedDateStr=2025-01-07, acceptedDate=null, acceptedDateStr=null, onlineDate=1762495747996, onlineDateStr=2025-11-07, pubDate=1745078400000, pubDateStr=2025-04-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1762495747996, onlineIssueDateStr=2025-11-07, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1762495747996, creator=13701087609, updateTime=1762495747996, updator=13701087609, issue=Issue{id=1193556932167431095, tenantId=1146029695717560320, journalId=1149653034449285133, year='2025', volume='58', issue='4', pageStart='1', pageEnd='144', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1762495747843, creator=13701087609, updateTime=1762498255746, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1193567451108573868, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1193556932167431095, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1193567451112768173, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1193556932167431095, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=30, endPage=36, ext={EN=ArticleExt(id=1193556933065012159, articleId=1193556932804965305, tenantId=1146029695717560320, journalId=1149653034449285133, language=EN, title=Study on energy storage properties of PEI-rGO@ZIF-8 composite films, columnId=1193556932997903294, journalTitle=Insulating Materials, columnName=Advanced Energy Storage Dielectric Special Issue, runingTitle=null, highlight=null, articleAbstract=

In order to improve the energy storage properties of polyetherimide (PEI) films, the aminated metal-organic framework (ZIF-8-NH2) was loaded on the surface of graphene oxide (GO) by electrostatic action, and then self-assembled to PEI film surface by intermolecular hydrogen bonding. After annealing, GO was reduced to reduced graphene oxide (rGO), and PEI-rGO@ZIF-8 composite films were obtained, and the effect of the ratios of rGO to ZIF-8-NH2 on the energy storage performance of PEI composite films were investigated. The results show that the discharge energy density of PEI-rGO@ZIF-8 (1∶15) composite film can reach 8.24 J/cm3 under the electric field of 680 MV/m, and maintain a high charge-discharge efficiency of 88.36%, showing excellent energy storage performance.

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为了提高聚醚酰亚胺（polyetherimide，PEI）薄膜的储能特性，本文选用氨基化的有机金属框架（ZIF-8-NH2），通过静电作用将其负载于氧化石墨烯（GO）表面，随后借助分子间的氢键作用实现在PEI表面的自组装。经退火处理实现GO向还原氧化石墨烯（rGO）的还原，最终获得PEI-rGO@ZIF-8复合薄膜。通过改变rGO与ZIF-8-NH2的比例，探究其对PEI复合薄膜储能性能的影响。结果表明：PEI-rGO@ZIF-8（1∶15）复合薄膜在680 MV/m的电场下放电能量密度可达到8.24 J/cm3，并保持了88.36%的高充放电效率，表现出优异的储能性能。

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马莉莉（1987-），女（汉族），山东德州人，讲师，博士，主要从事聚酰亚胺等高储能密度薄膜的制备及改性研究。
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李双翠（1986-），女（汉族），山东烟台人，讲师，博士，主要从事工程电介质材料的研发与改性研究。

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李双翠（1986-），女（汉族），山东烟台人，讲师，博士，主要从事工程电介质材料的研发与改性研究。

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李双翠（1986-），女（汉族），山东烟台人，讲师，博士，主要从事工程电介质材料的研发与改性研究。

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PEI-rGO@ZIF-8复合薄膜储能特性的研究
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李双翠 1 , 巴昭天 2 , 马莉莉 2, 3 , 巴玉霞 3
绝缘材料 | 先进储能电介质专题 2025,58(4): 30-36
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绝缘材料 | 先进储能电介质专题 2025, 58(4): 30-36
PEI-rGO@ZIF-8复合薄膜储能特性的研究
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李双翠1, 巴昭天2, 马莉莉2, 3, 巴玉霞3
作者信息
  • 1 湖州职业技术学院，浙江 湖州 313000
  • 2 青岛科技大学 材料科学与工程学院， 山东 青岛 266042
  • 3 东营兆源机电科技有限公司，山东 东营 257092

    • 李双翠（1986-），女（汉族），山东烟台人，讲师，博士，主要从事工程电介质材料的研发与改性研究。

通讯作者:

马莉莉（1987-），女（汉族），山东德州人，讲师，博士，主要从事聚酰亚胺等高储能密度薄膜的制备及改性研究。
Study on energy storage properties of PEI-rGO@ZIF-8 composite films
Shuangcui LI1, Zhaotian BA2, Lili MA2, 3, Yuxia BA3
Affiliations
  • 1 Huzhou Vocational and Technical College, Huzhou 313000, China
  • 2 College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
  • 3 Dongying Zhaoyuan Electromechanical Technology Co., Ltd., Dongying 257092, China
出版时间: 2025-04-20 doi: 10.16790/j.cnki.1009-9239.im.2025.04.005
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摘要
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为了提高聚醚酰亚胺（polyetherimide，PEI）薄膜的储能特性，本文选用氨基化的有机金属框架（ZIF-8-NH2），通过静电作用将其负载于氧化石墨烯（GO）表面，随后借助分子间的氢键作用实现在PEI表面的自组装。经退火处理实现GO向还原氧化石墨烯（rGO）的还原，最终获得PEI-rGO@ZIF-8复合薄膜。通过改变rGO与ZIF-8-NH2的比例，探究其对PEI复合薄膜储能性能的影响。结果表明：PEI-rGO@ZIF-8（1∶15）复合薄膜在680 MV/m的电场下放电能量密度可达到8.24 J/cm3，并保持了88.36%的高充放电效率，表现出优异的储能性能。

聚醚酰亚胺薄膜  /  还原氧化石墨烯  /  有机金属框架  /  自组装  /  储能密度

In order to improve the energy storage properties of polyetherimide (PEI) films, the aminated metal-organic framework (ZIF-8-NH2) was loaded on the surface of graphene oxide (GO) by electrostatic action, and then self-assembled to PEI film surface by intermolecular hydrogen bonding. After annealing, GO was reduced to reduced graphene oxide (rGO), and PEI-rGO@ZIF-8 composite films were obtained, and the effect of the ratios of rGO to ZIF-8-NH2 on the energy storage performance of PEI composite films were investigated. The results show that the discharge energy density of PEI-rGO@ZIF-8 (1∶15) composite film can reach 8.24 J/cm3 under the electric field of 680 MV/m, and maintain a high charge-discharge efficiency of 88.36%, showing excellent energy storage performance.

polyetherimide film  /  reduced graphene oxide  /  metal-organic framework  /  self-assembly  /  energy storage density
李双翠, 巴昭天, 马莉莉, 巴玉霞. PEI-rGO@ZIF-8复合薄膜储能特性的研究. 绝缘材料, 2025 , 58 (4) : 30 -36 . DOI: 10.16790/j.cnki.1009-9239.im.2025.04.005
Shuangcui LI, Zhaotian BA, Lili MA, Yuxia BA. Study on energy storage properties of PEI-rGO@ZIF-8 composite films[J]. Insulating Materials, 2025 , 58 (4) : 30 -36 . DOI: 10.16790/j.cnki.1009-9239.im.2025.04.005
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0 引言
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能源是人类发展的基石，能源危机是制约全人类经济可持续发展的瓶颈，开发可再生能源已成为全世界应对化石能源短缺问题的重要举措之一。能量存储技术是开发可再生能源的核心。薄膜电容器作为一类能量存储器件，以其在高电场下稳定性高、体积小、充放电速率快等特点，在高压输变电系统、新能源汽车、军工电子设备等领域有广泛的应用[1-3]。目前，应用最广泛的电介质薄膜是双向拉伸聚丙烯（biaxially oriented polypropylene，BOPP）薄膜。BOPP薄膜具有电气强度高、自愈性好、成本低等特点，但是较低的能量密度（2～3 J/cm3）严重限制了其在电力系统中的应用[4]。具有高介电常数 （>12）和高储能密度（>15.0 J/cm3）的聚偏氟乙烯（polyvinylidene difluoride，PVDF）聚合物也得到了广泛关注，但其在电场作用下易产生泄漏电流，会导致高的能量损耗[5]。聚酰亚胺（polyimide，PI）以其优异的耐高温性能、力学性能以及绝缘性能被广泛应用于电子、电气等领域，但是其电导损耗会随着电场的升高而急剧增加，同时高频高压的脉冲电压会使PI发生局部放电，造成材料老化并发生击穿，严重影响其储能特性。因此，开发具有高储能密度、低能量损耗的聚合物电介质材料是目前研究的重点[6-7]。
研究表明，通过优化分子结构设计可获得具有高储能密度和稳定循环特性的高性能聚合物[8-9]。DONG J F等[10]通过在分子尺度上调控聚合物的交联网络实现了对材料内部陷阱电荷中心浓度与能级深度的规律调控，显著抑制了聚合物在高温高场的电导损耗。RAN Z Y等[9]受生物大分子双链螺旋结构的启发，首次将螺环分子结构引入到耐热高分子体系并应用于高温介电储能领域，得到了在200℃条件下具有高充放电效率（≥90%）和高储能密度（6.13 J/cm3）的新型耐高温介电储能聚合物薄膜，其储能密度高于商业BOPP电容器薄膜在室温下的储能密度（约为4 J/cm3）。为了提升聚合物的介电常数、电气强度或降低电导损耗等，掺杂无机纳米粒子、有机半导体也是一种行之有效的方式[11-12]。YANG M Z等[13]将两种带有不同官能团（环己烷和砜基）的小分子作为功能基元，合成了一种兼具宽带隙、大偶极矩和高结构稳定性的双官能团偶极玻璃聚合物，并制备了双官能团偶极玻璃聚合物-商业化聚酰亚胺共混聚合物电介质，该聚合物电介质在150℃和200℃条件下的放电能量密度分别为8.34 J/cm3和6.21 J/cm3（充放电效率为90%），并在200℃、600 MV/m的严苛条件下实现了50 000次稳定充放电循环。近年来，在聚合物表面引入宽带隙的无机材料也是提高储能密度的重要举措之一[14]。无机材料能够在高温、高场下抑制电极电荷的注入，从而有效提高聚合物薄膜的绝缘性能与储能特性。对无机材料进行表面修饰改性还能实现降低介质损耗、减少电场畸变等优势[15]。XIE Z L等[16]利用浸渍涂布法制备了聚乙烯醇/钛酸钡（PVA/BT）涂覆的BOPP复合薄膜，其介电常数为4.2，电气强度为470 MV/m，在400 MV/m电场下放电能量密度为2.90 J/cm3。此外，紫外光辐照也是一种有效的表面改性方法。CHI Q G等[17]通过紫外线照射将丙烯酸（AA）接枝到BOPP薄膜表面，显著降低了材料在高温下的漏电流密度并同步提高了其高温储能性能，在370 MV/m和125℃条件下，改性后BOPP薄膜的放电能量密度为1.32 J/cm3，充放电效率大于90%，放电能量密度比原始BOPP薄膜提高了474%。这些材料可以有效抑制载流子注入，降低聚合物的电导率，并提高电气强度及介电特性，从而提高电容器的储能性能。然而，在聚合物表面构建绝缘层通常需要复杂的化学反应和操作工艺。例如，传统的浸渍涂布法会引入额外的表面黏附剂（如PVA等），这不但会限制电介质材料的电气绝缘性能，还会造成额外的生产成本，不利于实际生产。因此急需开发一种简便、绿色、低成本、高效的薄膜表面改性工艺来满足实际工业生产需要。
研究发现，有机金属框架（metal-organic frameworks，MOFs）是一种有机-无机杂化的三维多孔材料，其具有高绝缘、低介电的特点，常被应用于通信电子设备封装中[18-19]。本文利用静电作用在表面富含含氧官能团（如羟基、环氧基、羧基等）的负电性氧化石墨烯（GO）上包覆正电性的MOF（本文选用的MOF材料为氨基改性的沸石咪唑骨架-8，简称ZIF-8-NH2），制备了GO@ZIF-8-NH2，随后利用氢键作用将其自组装到PEI薄膜表面，并通过热处理将GO还原为还原氧化石墨烯（rGO）。探究不同比例的rGO与ZIF-8对PEI复合薄膜介电性能、绝缘性能和储能性能的影响。该研究工艺简单有效，为高性能、低成本电容器薄膜的工业生产提供了新的思路。
1 实验
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1.1 主要原材料
PEI薄膜，美国PolyK Technologies公司；无水乙醇、去离子水、六水合硝酸锌、2-甲基咪唑、2-氨基苯并咪唑及甲醇，阿拉丁试剂（上海）有限公司；氧化石墨烯，常州第六元素材料科技股份有限公司。
1.2 仪器设备
Regulus 8100型场发射扫描电子显微镜（SEM），日本日立公司；JEM-F200型场发射透射电子显微镜（TEM），日本电子株式会社；D/MAX/2500PC型X射线衍射仪（XRD），2θ为5°～40°，日本理学株式会社；VERTEX70v型傅里叶变换红外光谱仪（FTIR），美国Burker公司；Cary5000型紫外可见近红外分光光度计，美国安捷伦科技有限公司；Concept 40型介电阻抗-热激电流综合分析仪，德国Novocontrol GmbH公司；RK2674B型自动耐压仪，中国美瑞克电子科技有限公司；TF Analyzer 3000型铁电分析仪，德国aix ACCT公司。
1.3 试样制备
1.3.1 GO@ZIF-8-NH2的制备
用去离子水将GO提纯后放入锥形瓶中超声分散6 h，然后在3 500 r/min转速下离心15 min，取上层浊液备用。将六水合硝酸锌、2-甲基咪唑和2-氨基苯并咪唑分别溶于50 mL甲醇中（三者摩尔比为1∶4∶4），将上述两种甲醇溶液混合均匀并静置24 h使其完全反应，产物分别用甲醇和去离子水洗涤3～4次，得到氨基化ZIF-8（ZIF-8-NH2）的水溶液。此外，作为对比样品，原始ZIF-8的制备类似于上述操作，将六水合硝酸锌和2-甲基咪唑分别溶于50 mL甲醇中（二者摩尔比为1∶8），混合上述溶液并静置24 h，洗涤后得到ZIF-8的水溶液。将不同量的上述GO溶液与ZIF-8-NH2水溶液混合，超声1 h，使其完全反应，得到GO@ZIF-8-NH2溶液，制备过程如图1(a)所示。
1.3.2 PEI-rGO@ZIF-8复合薄膜的制备
采用无水乙醇洗涤PEI薄膜，之后在70℃下烘干5 min。将烘干后的PEI薄膜浸泡在GO@ZIF-8-NH2溶液中5 min，取出后在100℃下干燥5 min，此过程重复4次，制得PEI-GO@ZIF-8复合薄膜。将PEI-GO@ZIF-8复合薄膜放入烘箱中，在120℃下热处理6 h，以确保GO还原为rGO，（如图1(b)所示）。根据GO@ZIF-8-NH2溶液（浓度为20 mg/mL）中GO和ZIF-8质量比的不同，将样品命名为PEI-rGO@ZIF-8（1∶X），其中1∶X为GO与ZIF-8的质量比。
2 结果与讨论
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2.1 ZIF-8-NH2、GO@ZIF-8-NH2和PEI复合薄膜的结构表征
图2为ZIF-8、和ZIF-8-NH2的红外光谱图。从图2可以看出，在3 471 cm-1和3 380 cm-1处出现氨基对称和不对称伸缩振动吸收峰，表明氨基已成功接枝到ZIF-8上[20]。为了进一步研究氨基对ZIF-8的影响，利用XRD对ZIF-8和ZIF-8-NH2的晶体结构进行表征，结果如图3所示。从图3可以看出，两种试样的XRD曲线在2θ分别为7.40°、10.46°、12.54°、14.54°、16.26°、17.82°处出现明显的衍射峰，这归因于ZIF-8的（110）、（200）、（211）、（220）、（310）和（222）晶面衍射[21]。图4为ZIF-8和ZIF-8-NH2的SEM图。从图4可以看出，ZIF-8-NH2保持了ZIF-8的菱形十二面体结构，尺寸比较均一，平均粒径约为100 nm。以上结果表明成功制备了ZIF-8及ZIF-8-NH2，且在引入氨基后，ZIF-8的框架拓扑结构和形貌均没有发生明显改变。
由于GO表面布满负电荷，而ZIF-8-NH2带有正电荷，二者可以通过静电作用自组装合成GO@ZIF-8-NH2复合材料[22]。图5为GO@ZIF-8-NH2和PEI-rGO@ZIF-8的SEM图。
从图5(a)可以看出，ZIF-8-NH2吸附在GO表面并将其完全包覆，这保证了GO@ZIF-8-NH2复合材料的高绝缘性能；从图5(b)可以看出，rGO@ZIF-8-NH2已被成功组装到PEI薄膜的表面，这归因于ZIF-8中的氨基与PEI分子链中的醚键及亚胺环都有很强的氢键作用（如图6所示）[23-24]。上述结果证实了通过氢键自组装的方式对PEI薄膜表面改性的可行性和便捷性。
图7为PEI-rGO@ZIF-8复合薄膜的结构表征。从图7(a)可以看出，PEI-rGO@ZIF-8复合薄膜出现了ZIF-8的特征峰，分别为咪唑环的拉伸振动峰（波数为758 cm-1），C-N键的伸缩振动峰（波数为1 144 cm-1）和咪唑环的伸缩振动峰（波数为1 307 cm-1），在1 633 cm-1处出现了C=C的特征峰，表明rGO@ZIF-8-NH2复合材料被成功组装到PEI薄膜表面。通过拉曼光谱进一步研究了复合材料中rGO的还原程度，拉曼光谱中的D峰代表碳材料的结构缺陷，G峰对应sp2杂化碳原子的面内振动，I G/I D为两者的强度比，比值越大表明缺陷密度越小。从图7(b)曲线中D峰（波数为1 350 cm-1）和G峰（波数为1 590 cm-1）。经计算，复合材料的I G/I D从0.81上升到了0.92，证明GO经过热处理后被成功还原为rGO。
2.2 PEI-rGO@ZIF-8基复合薄膜的储能特性
采用紫外-可见吸收光谱对PEI和rGO@ZIF-8-NH2进行能带表征，结果如图8所示。经计算，PEI的禁带宽度（E g）为3.22 eV，rGO@ZIF-8-NH2的禁带宽度为4.11 eV，表明rGO@ZIF-8-NH2具有比PEI更高的绝缘性能，其在PEI薄膜表面引入的陷阱能级高达0.89 eV（＞0.5 eV），说明rGO@ZIF-8-NH2作为一类极性分子，可以在PEI表面引入深陷阱，有助于抑制载流子的注入和空间电荷的积累，从而改善材料的绝缘特性，这同时为后续的进一步研究提供了实验依据[25]。
图9为PEI-rGO@ZIF-8复合薄膜的电气性能测试结果。从图9(a)可以看出，在相同频率下，与纯PEI薄膜相比，PEI-rGO@ZIF-8复合薄膜的介电常数均有所提高，且随着rGO含量的增大而升高。其中PEI-rGO复合薄膜的介电常数最高（ε r=4.46，100 Hz），这归因于rGO具有独特的二维结构且其表面官能团和缺陷可以作为极化中心，从而提高复合薄膜的介电常数。其次，PEI-rGO@ZIF-8（1∶5）的介电常数在100 Hz下达到了4.01，比纯PEI薄膜（ε r=2.99）提高了34%。这主要是由于多方面的协同作用：①rGO@ZIF-8与PEI基体之间的界面效应增强了复合薄膜整体的极化；②在PEI表面均匀分布的rGO@ZIF-8大幅增加了复合薄膜表面微小电容器的数量，其通过串联/并联构成了多重极化中心，提高了复合薄膜的介电常数。PEI-rGO@ZIF-8复合薄膜的介质损耗因数与纯PEI薄膜相比有所增大，这主要是由于复合薄膜会在聚合物基体表面形成更多的导电通道，导致电导电流增加，介质损耗因数也随之增大。
介电材料的耐压性能是决定介质电容器最大放电能量密度的重要因素，也是保障器件稳定运行的重要参数。本研究采用式（1）所示Weibull分布模型对不同样品的耐压性能进行分析。
P E = 1 - e x p - ( E E b ) β
式（1）中：P(E)为施加外电场样品发生击穿的概率；E为施加的电场强度；E b为击穿概率为63.2%时对应的电气强度；β为形状因子，表示数据的分散性[26]。
从图9(b)可以看出，与纯PEI薄膜及PEI-rGO薄膜相比，PEI-ZIF-8和PEI-rGO@ZIF-8复合薄膜的耐压性能显著提高。PEI-ZIF-8和PEI-rGO@ZIF-8（1∶15）复合薄膜在击穿概率为63.2%时的电气强度分别达到了712.4 MV/m和690.2 MV/m，分别为纯PEI薄膜的1.30倍和1.26倍。主要原因：首先，ZIF-8自身宽禁带的属性阻碍了载流子向聚合物内部迁移；其次，在rGO@ZIF-8-NH2与PEI的界面处会形成深陷阱，从而束缚载流子的迁移；再次，rGO@ZIF-8-NH2与PEI之间的氢键也可以作为陷阱来捕获载流子，从而阻碍载流子的输运；最后，复合薄膜表面rGO@ZIF-8层较为均匀，降低了复合材料在高场强下发生电场畸变的概率，从而降低闪络电压，有效地提高了复合薄膜的电气绝缘特性。由于rGO为导电物质，若添加量过多，则会增大其与PEI基体接触的概率，进而引起复合薄膜的介电性能不匹配，引发载流子的聚集造成电气强度下降。因此，随着rGO含量的增加，复合薄膜的电气强度呈现先增大后减小的趋势。
介电性能和电气强度的改善，意味着电介质复合薄膜储能密度的同步提升。图10为PEI-rGO@ZIF-8复合薄膜储能性能的测试结果。从图10(a)可以看出，PEI-rGO@ZIF-8复合薄膜的最大电位移D max均高于纯PEI薄膜，说明复合薄膜中的极化增强。D max与剩余电位移D r的差值作为评估薄膜电容器有效电位移的关键参数，决定了电介质材料的储能性能。差值越大，表明电容器能够存储的能量越多，从而具有更高的能量密度和充放电效率。从图10(b)可以看出，PEI-rGO@ZIF-8（1∶15）薄膜的D max和D r差值最大（2.69 μC/cm2），因此可以预估其具有最佳的储能性能。从图10(c)可以看出，相比纯PEI薄膜，PEI-rGO@ZIF-8复合薄膜的放电能量密度（U d）都得到不同程度的提升，其中680 MV/m电场下，PEI-rGO@ZIF-8（1∶15）复合薄膜的U d达到了8.24 J/cm3（充放电效率为88.36%），比纯PEI薄膜（4.20 J/cm3）提高了96%。随着电场强度的提高，PEI-rGO@ZIF-8复合薄膜的充放电效率均有所下降，这归因于界面极化增强导致了更大的电场畸变，在高电场下产生了更多的漏导电流及损耗，导致复合薄膜的绝缘性能下降。
3 结论
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本文利用静电作用将氨基化的ZIF-8（ZIF-8-NH2）吸附到GO上，并通过氢键作用将GO@ZIF-8-NH2自组装到PEI薄膜表面，经过热还原处理制备了PEI-rGO@ZIF-8复合薄膜。较宽带隙的ZIF-8-NH2大幅提升了复合薄膜的电气强度并抑制介质损耗因数的增加，rGO的存在则提高了复合薄膜的相对介电常数，二者协作共同提高了复合薄膜的储能性能。在680 MV/m的电场下，PEI-rGO@ZIF-8（1∶15）复合薄膜的放电能量密度达到了8.24 J/cm3（充放电效率为88.36%），相对于纯PEI薄膜（4.20 J/cm3）提高了96%，表现出优异的储能性能。
基金
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  • 浙江省教育厅一般科研项目(Y202455650)
  • 湖州职业技术学院高层次人才专项探索项目(2024TS06)
  • 国家自然科学基金资助项目(52407247)
文献
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2025年第58卷第4期
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doi: 10.16790/j.cnki.1009-9239.im.2025.04.005
  • 接收时间：2024-10-28
  • 首发时间：2025-11-07
  • 出版时间：2025-04-20
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  • 收稿日期：2024-10-28
  • 修回日期：2025-01-07
基金
浙江省教育厅一般科研项目(Y202455650)
湖州职业技术学院高层次人才专项探索项目(2024TS06)
国家自然科学基金资助项目(52407247)
作者信息
    1 湖州职业技术学院，浙江 湖州 313000
    2 青岛科技大学 材料科学与工程学院， 山东 青岛 266042
    3 东营兆源机电科技有限公司，山东 东营 257092

通讯作者:

马莉莉（1987-），女（汉族），山东德州人，讲师，博士，主要从事聚酰亚胺等高储能密度薄膜的制备及改性研究。
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