2D ultrathin carbon nanosheets with rich N/O content constructed by stripping bulk chitin for high-performance sodium ion batteries

Two-dimensional (2D) nanomaterials hold considerable potential in reforming the energy storage performance, and the efficient production of high-performance 2D energy storage materials through facile and sustainable approaches is highly desirable. Herein, for the first time, large-area and ultrathin...

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Veröffentlicht in:Nanoscale 2019-07, Vol.11 (26), p.12626-12636
Hauptverfasser: Gao, Lingfeng, Ma, Jingqi, Li, Shuping, Liu, Dajin, Xu, Dingfeng, Cai, Jie, Chen, Lingyun, Xie, Jia, Zhang, Lina
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container_end_page 12636
container_issue 26
container_start_page 12626
container_title Nanoscale
container_volume 11
creator Gao, Lingfeng
Ma, Jingqi
Li, Shuping
Liu, Dajin
Xu, Dingfeng
Cai, Jie
Chen, Lingyun
Xie, Jia
Zhang, Lina
description Two-dimensional (2D) nanomaterials hold considerable potential in reforming the energy storage performance, and the efficient production of high-performance 2D energy storage materials through facile and sustainable approaches is highly desirable. Herein, for the first time, large-area and ultrathin carbon nanosheets doped with N/O were constructed by stripping bulk chitin via a "top-down" method. On the basis of the specific layered structure composed of nanofibers, chitin samples after removing the protein and CaCO 3 could be efficiently exfoliated into nanosheets (CNs) via the hydrothermal method, which were then carbonized into N/O co-doped porous carbon nanosheets (CCNs). The CCNs with a thickness of about 3.8 nm retained the original nanosheet structure consisting of nanofibers, leading to a 2D structure with hierarchical porosities. When used as anode materials for sodium-ion batteries, the 2D porous nanostructures and abundant N/O doping of CCNs-600 (carbonized at 600 °C) enable a high reversible capacity of 360 mA h g −1 at 50 mA g −1 , a good rate capability of 102 mA h g −1 at 10 A g −1 , and an excellent cycling stability of 140 mA h g −1 after 10 000 cycles at a high density of 5 A g −1 . Full cells consisting of a CCN anode and a Na 3 V 2 (PO 4 ) 3 /C cathode exhibited favorable rate performance and cycling stability, showing potential application prospects in highly efficient energy storage systems. The layered structure assisted efficient production of 2D carbon nanosheets from natural chitin is reported, demonstrating excellent performance in sodium storage.
doi_str_mv 10.1039/c9nr02277e
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Full cells consisting of a CCN anode and a Na 3 V 2 (PO 4 ) 3 /C cathode exhibited favorable rate performance and cycling stability, showing potential application prospects in highly efficient energy storage systems. 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Full cells consisting of a CCN anode and a Na 3 V 2 (PO 4 ) 3 /C cathode exhibited favorable rate performance and cycling stability, showing potential application prospects in highly efficient energy storage systems. The layered structure assisted efficient production of 2D carbon nanosheets from natural chitin is reported, demonstrating excellent performance in sodium storage.</description><subject>Anodes</subject><subject>Calcium carbonate</subject><subject>Carbon</subject><subject>Chitin</subject><subject>Construction</subject><subject>Cycles</subject><subject>Electrode materials</subject><subject>Energy storage</subject><subject>Nanofibers</subject><subject>Nanomaterials</subject><subject>Nanosheets</subject><subject>Nanostructure</subject><subject>Rechargeable batteries</subject><subject>Reforming</subject><subject>Sodium-ion batteries</subject><subject>Stability</subject><subject>Storage systems</subject><subject>Stripping</subject><subject>Structural hierarchy</subject><issn>2040-3364</issn><issn>2040-3372</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNpd0c9LHDEUB_BQKmpXL723BHqRwrj5MZOZHMu6rYIoiJ6HTOaNEzuTTJMM4tl_3OhuV_D0HuTD9wW-CH2l5JQSLpdaWk8YK0v4hA4ZyUnGeck-73aRH6AvITwQIiQXfB8dcMqSkOUhemZneB6iV7E3FmvlG2exVdaFHiAG_Ghij73RPb5aXmPtbAQbX2eIftYRWtw84bSbaTL2Hjfz8Bfr3sQU1jmPe3PfZxP4tI_KasDBtWYesUlXGhUjeAPhCO11aghwvJ0LdPd7fbs6zy6v_1ysfl1mmpciZlJxoSvCCqqIKDjjRFDVAhS0BVrQXJWq6lRZaaJbRquupYR1LNdtJQktC8kX6GSTO3n3b4YQ69EEDcOgLLg51IzlQlJCJU30xwf64GZv0--SKqiQJGc8qZ8bpb0LwUNXT96Myj_VlNSv1dQreXXzVs064e_byLkZod3R_10k8G0DfNC71_du-Qu7VZPZ</recordid><startdate>20190714</startdate><enddate>20190714</enddate><creator>Gao, Lingfeng</creator><creator>Ma, Jingqi</creator><creator>Li, Shuping</creator><creator>Liu, Dajin</creator><creator>Xu, Dingfeng</creator><creator>Cai, Jie</creator><creator>Chen, Lingyun</creator><creator>Xie, Jia</creator><creator>Zhang, Lina</creator><general>Royal Society of Chemistry</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>F28</scope><scope>FR3</scope><scope>JG9</scope><scope>L7M</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0001-5302-4450</orcidid><orcidid>https://orcid.org/0000-0002-0660-4740</orcidid><orcidid>https://orcid.org/0000-0002-8731-295X</orcidid><orcidid>https://orcid.org/0000-0003-3890-8690</orcidid></search><sort><creationdate>20190714</creationdate><title>2D ultrathin carbon nanosheets with rich N/O content constructed by stripping bulk chitin for high-performance sodium ion batteries</title><author>Gao, Lingfeng ; 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source Royal Society Of Chemistry Journals 2008-
subjects Anodes
Calcium carbonate
Carbon
Chitin
Construction
Cycles
Electrode materials
Energy storage
Nanofibers
Nanomaterials
Nanosheets
Nanostructure
Rechargeable batteries
Reforming
Sodium-ion batteries
Stability
Storage systems
Stripping
Structural hierarchy
title 2D ultrathin carbon nanosheets with rich N/O content constructed by stripping bulk chitin for high-performance sodium ion batteries
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