Lamellar composite membrane with acid-base pair anchored layer-by-layer structure towards highly enhanced conductivity and stability

Wang, Jingtao; Liu, Yarong; Dang, Jingchuan; Zhou, Guoli; Wang, Yan; Zhang, Yafang; Qu, Lingbo; Wu, Wenjia

doi:10.1016/j.memsci.2020.117978

Cited by 36 publications

(20 citation statements)

References 42 publications

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“…In particular, anion exchange membrane fuel cells (AEMFCs) with an alkaline operating environment represent high reaction kinetics, lower fuel leakage, use of non-noble metal catalysts, and relatively high fuel cell performance. [1][2][3][4][5] In AEMFCs, facile hydroxide conduction and high stability of the anion exchange membrane (AEM) play a critical role in the performance of fuel cells. Therefore, enormous efforts have been directed towards the construction of high-performance hydroxide-conducting materials, including nanophase-separated polymers and organic-inorganic hybrids.…”

Section: Introductionmentioning

confidence: 99%

A covalent organic framework membrane with enhanced directional ion nanochannels for efficient hydroxide conduction

Chen

Zhang

et al. 2022

J. Mater. Chem. A

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Section: Introductionmentioning

confidence: 99%

A covalent organic framework membrane with enhanced directional ion nanochannels for efficient hydroxide conduction

Chen

Zhang

et al. 2022

J. Mater. Chem. A

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“…67 Copyright 2021, Elsevier Ltd. cycles, the largest decrease occurs at the cathode in the (100) orientation (Figure 4L). The reason why the orientation (111) has the highest capacity stably in 100 cycles is that Li-ion is diffused by the exposed surface of the facet, and the orientation ( 111) is relatively densely packed than the orientation (001), making it difficult to diffuse. 69 In addition, cycling performance and thermal stability are important variables to actually commercialize a battery, and Fan et al 70 tested LiNi 0.83 Co 0.11 Mn 0.06 O 2 to confirm that a high crystalline cathode has higher cycle stability than the amorphous cathode.…”

Section: Cathodementioning

confidence: 99%

Highly textured and crystalline materials for rechargeable Li‐ion batteries

et al. 2023

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To build an environment-friendly energy-based society, it is important to develop stable and high-performance batteries as an energy storage system. However, there are still unresolved challenges associated with safety issues, slow kinetics, and lifetime. To overcome these problems, it is essential to understand the battery systems including cathode, electrolyte, and anode. Using a well-controlled material system such as epitaxial films, textured films, and single crystals can be a powerful strategy to investigate the relationship between microstructural and electrochemical properties. In this review, we discuss the need for research with wellcontrolled materials system and recent progress in the well-controlled cathode, solid-state-electrolyte, and anode materials for Li-ion batteries. Enhanced stability and electrochemical performance due to the facilitation of prolonged and endured Li-ion transport in facet-controlled battery materials are highlighted. Finally, the challenges and future directions utilizing the well-controlled battery system for high-performance battery are proposed.

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“…Improved proton conductivities and reduced methanol permeabilities were obtained for all of them. Furthermore, GO can be used as an excellent platform to prepare nanomaterials with inherent continuous functional groups. ,, Some specific acid–base pairs can be modified onto the surfaces of GO to realize inherent continuity. , …”

Section: Introductionmentioning

confidence: 99%

“…6,14,26 Some specific acid−base pairs can be modified onto the surfaces of GO to realize inherent continuity. 5,27 So far, various basic group functionalized materials have been introduced into sulfonated polymer matrixes to build acid−base pair proton conductive routes. 28,29 Especially, incorporation of suitable amino functionalized materials into sulfonated polymer matrixes can construct effective sulfonic and amino (−SO 3 H and −NH 2 ) acid−base pairs for proton conduction.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, construction of acid–base pairs for expediting the proton conduction of PEMs has attained strong attention. Low-energy barrier proton conducting channels can be created for that the constructed acid–base pairs can promote the deprotonation/protonation and generate plenty of proton defects. − Usually, two methods are applied to develop acid–base pairs. One is blending acidic polymers (e.g., sulfonated poly(ether ether ketone) (SPEEK) and sulfonated polyethersulfone (SPES)) with basic polymers (e.g., chitosan (CS) and polybenzimidazole (PBI)). − Ahn et al blended cross-linked sulfonated poly(arylene ether) (cSPAE100) with triazole-containing poly(arylene ether sulfone) (PAES-DTM) to obtain a composite PEM, which exhibited a higher proton conductivity of about 14 mS cm –1 than that of the pure cSPAE100 membrane (about 12 mS cm –1 ) at 80 °C, 50% RH .…”

Section: Introductionmentioning

confidence: 99%

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Construction of Surface Sulfonic and Amino Acid–Base Pair Modified Graphene Oxide for Effectively Promoting the Selectivity of the Proton Exchange Membrane

Rao,

Zhang,

Liu

et al. 2023

ACS Appl. Polym. Mater.

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Surface −SO3H and −NH2 acid–base pair modified graphene oxide (BAGO) was constructed by first polydopamine (PDA) coating onto GO and subsequent reaction with 2,2′-benzidinedisulfonic acid (BA). The composite proton exchange membrane (PEM) with prominently elevated selectivity (selectivity: the ratio of proton conductivity to methanol permeability) was prepared by incorporation of BAGO into the Nafion matrix. The functional groups (−SO3H and −NH2) onto BAGO could form consecutive acid–base pairs for proton transfer benefitting from the tethering function of GO and the interconnection of the functional groups. In addition, continuous acid–base pair proton conducting pathways could be constructed between −NH2 of BAGO and −SO3H of Nafion. These enormously expedited the proton transportation of the composite PEM, enabling its proton conductivity to reach 0.262 S cm–1 under 95% RH, 90 °C, twice that of the recast Nafion (RN). Furthermore, significantly attenuated methanol permeability was achieved by the composite PEM due to the methanol barrier effect of BAGO and reduced free volume of the composite PEM. Meanwhile, the maximum power density of the composite PEM in a direct methanol fuel cell reached 32.5 mW cm–2, approximately 62% larger than that of RN (20.1 mW cm–2). This work offers a valuable guidance for constructing the composite PEM with effectively improved selectivity.

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Lamellar composite membrane with acid-base pair anchored layer-by-layer structure towards highly enhanced conductivity and stability

Cited by 36 publications

References 42 publications

A covalent organic framework membrane with enhanced directional ion nanochannels for efficient hydroxide conduction

A covalent organic framework membrane with enhanced directional ion nanochannels for efficient hydroxide conduction

Highly textured and crystalline materials for rechargeable Li‐ion batteries

Construction of Surface Sulfonic and Amino Acid–Base Pair Modified Graphene Oxide for Effectively Promoting the Selectivity of the Proton Exchange Membrane

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