Urine to highly porous heteroatom-doped carbons for supercapacitor: Avalue added journey for human waste

Collection with item attached
2017
Item details URL
http://open-repository.kisti.re.kr/cube/handle/open_repository/486768.do
DOI
10.1038/s41598-017-11229-6
Title
Urine to highly porous heteroatom-doped carbons for supercapacitor: Avalue added journey for human waste
Description
This work was supported by Global Frontier R&D Program on Center forMultiscale Energy System (NRF 2011-0031571) and an NRF grant (NRF2014K2A3A1000240) funded by the Ministry of Education, Science andTechnology through the National Research Foundation of Korea. Theauthors also would like to thank DGIST NANO FAB center and Korean BasicScience Institute at Daegu for SEM and TEM analysis.
abstract
Obtaining functionalized carbonaceous materials, with well-developed pores and doped heteroatoms, from waste precursors using environmentally friendly processes has always been of great interest. Herein, a simple template-free approach is devised to obtain porous and heteroatom-doped carbon, by using the most abundant human waste, "urine". Removal of inherent mineral salts from the urine carbon (URC) makes it to possess large quantity of pores. Synergetic effect of the heteroatom doping and surface properties of the URC is exploited by carrying out energy storage application for the first time. Suitable heteroatom content and porous structure can enhance the pseudo-capacitance and electric double layer capacitance, eventually generating superior capacitance from the URC. The optimal carbon electrode obtained particularly at 900 degrees C (URC-900) possesses high BET surface area (1040.5 m(2)g(-1)), good conductivity, and efficient heteroatom doping of N, S, and P, illustrating high specific capacitance of 166 Fg(-1) at 0.5 Ag-1 for three-electrode system in inorganic electrolyte. Moreover, the URC-900 delivers outstanding cycling stability with only 1.7% capacitance decay over 5,000 cycles at 5 Ag-1. Present work suggests an economical approach based on easily available raw waste material, which can be utilized for large-scale production of new age multi-functional carbon nanomaterials for various energy applications.
provenance
Made available in Cube on 2018-09-28T16:16:25Z (GMT). No. of bitstreams: 0
language
English
author
Razmjooei, Fatemeh
Singh, Kiranpal
Kang, Tong Hyun
Chaudhari, Nitin
Yuan, Jinliang
Yu, Jong-Sung
orcid
Kang, Tong-Hyun/0000-0003-4292-2110; Yuan, Jinliang/0000-0003-0922-7132;
Chaudhari, Nitin/0000-0002-8324-577X; Yu, Jong-Sung/0000-0002-8805-012X
accessioned
2018-09-28T16:16:25Z
available
2018-09-28T16:16:25Z
issued
2017
citation
SCIENTIFIC REPORTS(7)
issn
2045-2322
uri
http://open-repository.kisti.re.kr/cube/handle/open_repository/486768.do
Funder
과학기술정보통신부
Funding Program
글로벌프론티어지원
Project ID
1711052709
Jurisdiction
Rep.of Korea
Project Name
Technology for highly conductive and new catalyst
rights
openAccess
type
article


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