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Title: Biocompatible mesoporous hollow carbon nanocapsules for high performance supercapacitors
Authors: Wang, Lijian
Liu, Fenghua
Ning, Yuesheng
Bradley, Robert
Yang, Chengbin
Yong, Ken-Tye
Zhao, Binyuan
Wu, Weiping
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2020
Source: Wang, L., Liu, F., Ning, Y., Bradley, R., Yang, C., Yong, K.-T., . . . Wu, W. (2020). Biocompatible mesoporous hollow carbon nanocapsules for high performance supercapacitors. Scientific Reports, 10(1), 4306-. doi:10.1038/s41598-020-61138-4
Project: MOE2017-T2-2-002
Journal: Scientific Reports 
Abstract: A facile and general method for the controllable synthesis of N-doped hollow mesoporous carbon nanocapsules (NHCNCs) with four different geometries has been developed. The spheres (NHCNC-1), low-concaves (NHCNC-2), semi-concaves (NHCNC-3) and wrinkles (NHCNC-4) shaped samples were prepared and systematically investigated to understand the structural effects of hollow particles on their supercapacitor performances. Compared with the other three different shaped samples (NHCNC-1, NHCNC-2, and NHCNC-4), the as-synthesized semi-concave structured NHCNC-3 demonstrated excellent performance with high gravimetric capacitance of 326 F g−1 (419 F cm−3) and ultra-stable cycling stability (96.6% after 5000 cycles). The outstanding performances achieved are attributed to the unique semi-concave structure, high specific surface area (1400 m2 g−1), hierarchical porosity, high packing density (1.41 g cm−3) and high nitrogen (N) content (up to 3.73%) of the new materials. These carbon nanocapsules with tailorable structures and properties enable them as outstanding carriers and platforms for various emerging applications, such as nanoscale chemical reactors, catalysis, batteries, solar energy harvest, gas storage and so on. In addition, these novel carbons have negligible cytotoxicity and high biocompatibility for human cells, promising a wide range of bio applications, such as biomaterials, drug delivery, biomedicine, biotherapy and bioelectronic devices.
ISSN: 2045-2322
DOI: 10.1038/s41598-020-61138-4
Schools: School of Electrical and Electronic Engineering 
Rights: © 2020 The Author(s). This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit
Fulltext Permission: open
Fulltext Availability: With Fulltext
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