Graphene Oxide-Based Solid Electrolytes with 3D Prepercolating Pathways for Efficient Proton Transport

Cao Li; Wu Hong; Yang Pengfei; He Xueyi; Li Jinzhao; Li Yan; Xu Mingzhao; Qiu Ming; Jiang Zhongyi

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Graphene Oxide-Based Solid Electrolytes with 3D Prepercolating Pathways for Efficient Proton Transport

机译：具有3D预渗流途径的基于氧化石墨烯的固体电解质，可有效进行质子传输

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Graphene oxide (GO) with unprecedentedly fast ion transport ability has become emerging building blocks for solid electrolytes. However, the inferior through plane transport properties, along with the agglomeration and discontinuity of CO nanosheets in composite electrolytes represent a major obstacle for efficient proton conduction. Herein, a 3D prepercolating sulfonated GO (3D sGO) network is designed by a freeze-casting method, and further fabricated composite electrolytes by infusing polymer electrolytes into the 3D sGO networks. The sGO laminates are well integrated into percolative nanoarchitectures, which enables the 3D sGO networks a high proton conduction capability (five times higher than Nafion membrane, a state-of-art solid electrolyte) and isotropic transport feature. The prepercolating strategy avoids sGO nanosheets agglomeration and provides continuously proton-conductive pathways that percolate throughout the whole electrolytes. Consequently, the composite electrolytes exhibit a remarkable and simultaneous improvement in both in-plane and through-plane proton conductivity, which is unattainable for the existing 2D nanofiller-polymer electrolytes. Particularly, the highest through-plane proton conductivity reaches 0.29 S cm(-1), outperforming the current 2D nanofiller-based composite electrolytes. This prepercolating strategy may open a new avenue to fully utilizing the inherently rapid conduction of 2D materials for efficient transport of diverse ions/molecules.

机译：具有前所未有的快速离子传输能力的氧化石墨烯（GO）已成为固体电解质的新兴组成部分。然而，在复合电解质中，劣质的贯穿平面传输性能以及CO纳米片的团聚和不连续性是有效质子传导的主要障碍。本文中，通过冷冻浇铸法设计了3D预渗磺化GO（3D sGO）网络，并通过将聚合物电解质注入3D sGO网络中进一步制造了复合电解质。 sGO层压板很好地集成到了渗透性纳米结构中，这使3D sGO网络具有很高的质子传导能力（比最先进的固体电解质Nafion膜高五倍）和各向同性的传输特性。预渗透策略避免了sGO纳米片的团聚，并提供了贯穿整个电解质的连续质子传导途径。因此，复合电解质在面内和面内质子传导率上均显示出显着且同时的改善，这对于现有的2D纳米填料聚合物电解质是无法实现的。特别是，最高的平面质子传导率达到0.29 S cm（-1），优于目前的2D纳米填料基复合电解质。这种预渗透策略可为充分利用2D材料固有的快速传导性开辟新途径，以有效地运输各种离子/分子。

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来源
《Advanced Functional Materials》 |2018年第50期|1804944.1-1804944.10|共10页
作者
Cao Li; Wu Hong; Yang Pengfei; He Xueyi; Li Jinzhao; Li Yan; Xu Mingzhao; Qiu Ming; Jiang Zhongyi;
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Tianjin Univ, Sch Chem Engn & Technol, Minist Educ, Key Lab Green Chem Technol, Tianjin 300072, Peoples R China|Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300072, Peoples R China;

Tianjin Univ, Sch Chem Engn & Technol, Minist Educ, Key Lab Green Chem Technol, Tianjin 300072, Peoples R China|Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300072, Peoples R China|Tianjin Univ, Tianjin Key Lab Membrane Sci & Desalinat Technol, Tianjin 300072, Peoples R China;

Tianjin Univ, Sch Chem Engn & Technol, Minist Educ, Key Lab Green Chem Technol, Tianjin 300072, Peoples R China|Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300072, Peoples R China;

Tianjin Univ, Sch Chem Engn & Technol, Minist Educ, Key Lab Green Chem Technol, Tianjin 300072, Peoples R China|Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300072, Peoples R China;

Tianjin Univ, Sch Chem Engn & Technol, Minist Educ, Key Lab Green Chem Technol, Tianjin 300072, Peoples R China|Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300072, Peoples R China;

Tianjin Univ, Sch Chem Engn & Technol, Minist Educ, Key Lab Green Chem Technol, Tianjin 300072, Peoples R China|Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300072, Peoples R China;

Tianjin Univ, Sch Chem Engn & Technol, Minist Educ, Key Lab Green Chem Technol, Tianjin 300072, Peoples R China|Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300072, Peoples R China;

Tianjin Univ, Sch Chem Engn & Technol, Minist Educ, Key Lab Green Chem Technol, Tianjin 300072, Peoples R China|Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300072, Peoples R China;

Tianjin Univ, Sch Chem Engn & Technol, Minist Educ, Key Lab Green Chem Technol, Tianjin 300072, Peoples R China|Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300072, Peoples R China;

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正文语种 eng
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关键词
3D prepercolating pathways; graphene oxide; long-range ordered nanochannels; proton conduction; solid electrolytes;

机译：3D预渗透途径;氧化石墨烯;长程有序纳米通道;质子传导;固体电解质;

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Graphene Oxide-Based Solid Electrolytes with 3D Prepercolating Pathways for Efficient Proton Transport

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