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231226s2022 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.2c01141
|2 doi
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|a pubmed24n1145.xml
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|a (DE-627)NLM343596288
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|a (NLM)35839381
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Du, Guo
|e verfasserin
|4 aut
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|a Hierarchically Porous Mesostructured Polydopamine Nanospheres and Derived Carbon for Supercapacitors
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|c 2022
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 27.07.2022
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|a Date Revised 29.08.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Polydopamine (PDA), with similar chemical and physical properties to eumelanin, is a typical artificial melanin material. With various functional groups, good biocompatibility, and photothermal conversion ability, PDA attracts great interest and is extensively studied. Endowing PDA with a porous structure would increase its specific surface area, therefore would significantly improve its performance in different application fields. However, creating abundant pores within the PDA matrix is a great challenge. Herein, a self-assembly/etching method is proposed to prepare hierarchically porous mesostructured PDA nanospheres. The oxidative polymerization of dopamine and hydrolysis of tetraethyl orthosilicate were coupled to co-assemble with a polyelectrolyte-surfactant complex template to form a mesostructured PDA/silicate nanocomposite. After removing templates and etching of silica, hierarchically porous PDA nanospheres were obtained with specific surface area and pore volume as high as 302 m2 g-1 and 0.67 cm3 g-1, respectively. Moreover, via subsequent carbonization and silica-etching, ordered mesoporous N-doped carbon microspheres (OMCMs) with ∼2 nm ordered mesopores and ∼20 nm secondary nanopores could be obtained. When used as electrodes of supercapacitors, the OMCMs exhibited a specific capacity of 341 F g-1 at 1 A g-1 with excellent rate capability, and the OMCM-based symmetric supercapacitor delivered a high energy density of 14.1 W h kg-1 at a power density of 250 W kg-1 and minor capacitance fading (only 2.6%) after 10,000 cycles at 2 A g-1
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Indoles
|2 NLM
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|a Polymers
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|a polydopamine
|2 NLM
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|a Carbon
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|a 7440-44-0
|2 NLM
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|a Silicon Dioxide
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|a 7631-86-9
|2 NLM
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|a Wang, Huan
|e verfasserin
|4 aut
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|a Liu, Jiawei
|e verfasserin
|4 aut
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|a Sun, Pingchuan
|e verfasserin
|4 aut
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| 700 |
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|a Chen, Tiehong
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 38(2022), 29 vom: 26. Juli, Seite 8964-8974
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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|g volume:38
|g year:2022
|g number:29
|g day:26
|g month:07
|g pages:8964-8974
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|u http://dx.doi.org/10.1021/acs.langmuir.2c01141
|3 Volltext
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