Squid inks-derived nanocarbons with unique "shell@pearls" structure for high performance supercapacitors

被引：40

作者：

Cheng, Fengli ^{[1
]}

Liu, Wei ^{[1
]}

Zhang, Yuan ^{[1
]}

Wang, Huanlei ^{[1
]}

Liu, Shuang ^{[1
]}

Hao, Enchao ^{[1
]}

Zhao, Shuping ^{[1
]}

Yang, Hongzhan ^{[1
]}

机构：

[1] Ocean Univ China, Inst Mat Sci & Engn, Qingdao 266100, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2017年 / 354卷

基金：

中国国家自然科学基金;

关键词：

Squid inks; Porous carbon; Electrode materials; Biomass; Supercapacitors; CAPACITY BATTERY ANODES; DOPED CARBON; ELECTRODE MATERIALS; ACTIVATED CARBON; POROUS STRUCTURE; HIGH-ENERGY; NITROGEN; GRAPHENE; SULFUR; MICROSPHERES;

D O I：

10.1016/j.jpowsour.2017.04.016

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Porous carbons derived from biomass are one current hotspot in exploring advanced electrode materials for supercapacitors. In this work, based on nanoparticles from squid inks, an N-doping porous carbons with a unique "shell@pearls" structure has been fabricated through a direct carbonization/activation procedure. Remarkably, a fantastic structural evolution from core-shell, yolk-shell to the porous matrix embedded with small spheres (like pears in shell) has been observed. The as-obtained products exhibit a hierarchical porosity comprised of micro-, meso- and macropores, as well with a large surface area (1957 m(2) g(-1)) and N-doping (2.09%). As the electrode materials for supercapacitors, the "shell@pearls"bio-carbons show the very high capacitance of 329 F g(-1) at 0.5 A g(-1) and 265 F g(-1) at 30 A g(-1) and also a superior retention of 99.5% after 10000 cycles at 5 A g(-1). (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：116 / 123

页数：8

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