Improving lithium–sulfur battery performances by using conjugative porous polymer as the sulfur support: the case of N-containing porous aromatic framework 41

Wang, Qian; Gao, Haiyan; Cui, Qi; Wu, Keke; Hao, Feiyan; Yu, Jianguo; Zhao, Yi; Kwon, Young‐Uk

doi:10.1007/s10008-018-04166-5

Cited by 9 publications

(5 citation statements)

References 54 publications

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“…Recently, the S loading content was increased to 72 wt % in a different N-containing PAF (PAF-41), which has a hierarchical porous structure. The cell had a high capacity at 725.8 mAh g –1 in the first cycle and sustains a reversible capacity of 491.4 mAh g –1 after 500 charge–discharge cycles, which equals a low decay rate of 0.06% per cycle …”

Section: State-of-the-art Of Paf Applicationsmentioning

confidence: 94%

“…The cell had a high capacity at 725.8 mAh g −1 in the first cycle and sustains a reversible capacity of 491.4 mAh g −1 after 500 charge−discharge cycles, which equals a low decay rate of 0.06% per cycle. 345 The use of a PAF-based electrode for electrochemical conversion was also investigated. The tetrahedral carbazolecontaining building units were polymerized by oxidative coupling to give the electroactive PAF-39, which was formed into a modified glassy carbon electrode.…”

Section: Pafs and Their Derivatives For Electrochemistrymentioning

confidence: 99%

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Porous Aromatic Frameworks (PAFs)

2020

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Porous aromatic frameworks (PAFs) represent an important category of porous solids. PAFs possess rigid frameworks and exceptionally high surface areas, and, uniquely, they are constructed from carbon−carbon−bond−linked aromatic-based building units. Various functionalities can either originate from the intrinsic chemistry of their building units or are achieved by postmodification of the aromatic motifs using established reactions. Specially, the strong carbon−carbon bonding renders PAFs stable under harsh chemical treatments. Therefore, PAFs exhibit specificity in their chemistry and functionalities compared with conventional porous materials such as zeolites and metal organic frameworks. The unique features of PAFs render them being tolerant of severe environments and readily functionalized by harsh chemical treatments. The research field of PAFs has experienced rapid expansion over the past decade, and it is necessary to provide a comprehensive guide to the essential development of the field at this stage. Regarding research into PAFs, the synthesis, functionalization, and applications are the three most important topics. In this thematic review, the three topics are comprehensively explained and aptly exemplified to shed light on developments in the field. Current questions and a perspective outlook will be summarized. CONTENTS 3. General Strategies and Examples For PAF Functionalization 8951 3.1. Direct Synthesis 8951 3.2. Postsynthetic Modification 8952 3.3. Post Modification of PAFs with Preanchored Sites 8953 3.4. PAFs with Charged Frameworks 8953 3.5. Wettability and Polarity of PAF Frameworks 8953 4. State-of-the-Art of PAF Applications 8954 4.1. Gas Adsorption 8954 4.1.1. Hydrogen Storage 8954 4.1.2. Methane Adsorption 8958 4.1.3. CO 2 Capture 8960 4.1.4. Adsorptive Separation of Hydrocarbon Mixtures 8965 4.1.5. Capture of Ammonia 8966 4.2. Membrane Separation 8966 4.3. Adsorption of Hazardous Organic Compounds 8968 4.3.1. Capture of Hazardous Organic Chemicals 8968 4.3.2. Enrichment of Trace Organic Compounds for Analysis 8969

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Section: State-of-the-art Of Paf Applicationsmentioning

confidence: 94%

Section: Pafs and Their Derivatives For Electrochemistrymentioning

confidence: 99%

Porous Aromatic Frameworks (PAFs)

2020

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“…The ability to capture polysulfide was also systematically investigated on various doping elements in CTF. 40 Both experimental and simulation data indicated that introducing N and O heteroatoms readily enhanced the interaction between the skeleton and polysulfides to inhibit the shuttle effect. 41 Herein, a novel covalent triazine framework with abundant N and O heteroatoms, denoted as CTFO, was designed and synthesized by copolymerizing 2,4,6-triphenoxy-s-triazine and 2,4,6-trichloro-1,3,5-triazine (TCT) through Friedel−Crafts alkylation.…”

Section: Introductionmentioning

confidence: 99%

“…CTF materials with multiple heteroatoms, such as fluorinated sulfur-rich CTFs (SF-CTFs), , elevated the sulfur loading through the insertion reaction and the nucleophilic aromatic substitution reaction (SNAr) between perfluoroaryl units and sulfur and greatly improved the electrochemical performance with high capacity and cycling stability. The ability to capture polysulfide was also systematically investigated on various doping elements in CTF . Both experimental and simulation data indicated that introducing N and O heteroatoms readily enhanced the interaction between the skeleton and polysulfides to inhibit the shuttle effect …”

Section: Introductionmentioning

confidence: 99%

New Covalent Triazine Framework Rich in Nitrogen and Oxygen as a Host Material for Lithium–Sulfur Batteries

Gao

Jia

Gao

et al. 2021

ACS Appl. Mater. Interfaces

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Lithium–sulfur (Li–S) batteries have been widely considered as the next-generation energy storage system but hindered by the soluble polysulfide intermediate-induced shuttle effect. Doping heteroatoms was confirmed to enhance the affinity of polysulfide and the carbon host, release the shuttle effect, and improve the battery performance. To enhance the Lewis acidity and reinforce the interaction between polysulfide and the carbon skeleton, a novel covalent triazine framework (CTFO) was designed and fabricated by copolymerizing 2,4,6-triphenoxy-s-triazine and 2,4,6-trichloro-1,3,5-triazine through Friedel–Crafts alkylation. Polymerization led to triazine substitution on the para-position of the phenoxy groups of 2,4,6-triphenoxy-triazine and produced two-dimensional three-connected honeycomb nanosheets. These nanosheets were confirmed to exhibit packing in the AB style through the intralayer π–π interaction to form a three-dimensional layered network with micropores of 0.5 nm. The practical and simulated results manifested the enhanced polysulfide capture capability due to the abundant N and O heteroatoms in CTFO. The unique porous polar network endowed CTFO with improved Li–S battery performance with high Coulombic efficiency, rate capability, and cycling stability. The S@CTFO cathode delivered an initial discharge capacity of 791 mAh g–1 at 1C and retained a residual capacity of 512 mAh g–1 after 300 charge–discharge cycles with an attenuation rate of 0.117%. The present results confirmed that multiple heteroatom doping enhances the interaction between the porous polar CTF skeleton and polysulfide intermediates to improve the Li–S battery performance.

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“…Their combined high surface area and stability render them promising candidates for applications where porosity and material stability govern performance. PAFs are currently under investigation for applications in gas storage/purification, 9,[11][12][13][14] water purification, [15][16][17] energy storage, [18][19][20][21] and catalysis. [22][23][24][25] Their excellent figures of merit in many of these applications are often attributed to their high stability and/or high surface areas.…”

mentioning

confidence: 99%

A Ni(COD)₂-free approach for the synthesis of high surface area porous aromatic frameworks

Porath

Hettiarachchi

et al. 2022

Chem. Commun.

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Improving lithium–sulfur battery performances by using conjugative porous polymer as the sulfur support: the case of N-containing porous aromatic framework 41

Cited by 9 publications

References 54 publications

Porous Aromatic Frameworks (PAFs)

Porous Aromatic Frameworks (PAFs)

New Covalent Triazine Framework Rich in Nitrogen and Oxygen as a Host Material for Lithium–Sulfur Batteries

A Ni(COD)₂-free approach for the synthesis of high surface area porous aromatic frameworks

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Improving lithium–sulfur battery performances by using conjugative porous polymer as the sulfur support: the case of N-containing porous aromatic framework 41

Cited by 9 publications

References 54 publications

Porous Aromatic Frameworks (PAFs)

Porous Aromatic Frameworks (PAFs)

New Covalent Triazine Framework Rich in Nitrogen and Oxygen as a Host Material for Lithium–Sulfur Batteries

A Ni(COD)2-free approach for the synthesis of high surface area porous aromatic frameworks

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A Ni(COD)₂-free approach for the synthesis of high surface area porous aromatic frameworks