Kinetically Controlled Assembly of Nitrogen‐Doped Invaginated Carbon Nanospheres with Tunable Mesopores. Issue 42 (4th September 2016)

• Record Type: Journal Article
• Authors: Liu, Yang; Zhang, Hongwei; Noonan, Owen; Xu, Chun; Niu, Yuting; Yang, Yannan; Zhou, Liang; Huang, Xiaodan; Yu, Chengzhong
• Is Part Of: Chemistry. Volume 22:Issue 42(2016)
• Page Start: 14962
• Page End: 14967
• Publication Date: 2016-09-04
• Subjects: carbon nanospheres -- hollow structure -- mesoporous materials -- self-assembly -- supercapacitors; Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.201602672
• Languages: English
• ISSNs: 0947-6539

Abstract

Abstract: Mesoporous hollow carbon nanospheres (MHCS) have been extensively studied owning to their unique structural features and diverse potential applications. A surfactant‐free self‐assembly approach between resorcinol/formaldehyde and silicon alkoxide has emerged as an important strategy to prepare MHCS. Extending such a strategy to other substituted phenols to produce heterogeneous‐atom‐doped MHCS remains a challenge due to the very different polymerization kinetics of various resins. Herein, we report an ethylenediamine‐assisted strategy to control the cooperative self‐assembly between a 3‐aminophenol/formaldehyde resin and silica templates. Nitrogen‐doped mesoporous invaginated carbon nanospheres (N‐MICS) with an N content of 6.18 at %, high specific surface areas (up to 1118 m 2 g −1 ), large pore volumes (2.47 cm 3 g −1 ), and tunable mesopores (3.7–11.1 nm) have been prepared. When used as electrical double‐layer supercapacitors, N‐MICS show a high capacitance of 261 F g −1, an outstanding cycling stability (≈94 % capacitance retention after 10 000 cycles), and a good rate performance. Abstract : Etch it out ! Nitrogen‐doped invaginated carbon nanospheres with high specific surface areas (up to 1118 m 2 g −1 ), large pore volumes (2.47 cm 3 g −1 ), and tunable mesopores (3.7–11.1 nm) have been prepared by a surfactant‐free strategy, through an ethylenediamine‐assisted cooperative assembly between a 3‐aminophenol/formaldehyde resin and silica templates.