CAS OpenIR
Recovery and reuse of floc sludge for high-performance capacitors
Zhang, Di1,2; Hou, Rong1; Wang, Wenbo1,2; Zhao, He1
2022-06-01
Source PublicationFRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
ISSN2095-2201
Volume16Issue:6Pages:12
AbstractIn this paper, floc sludge was transformed into porous carbon matrix composites by acidification and KOH activation at high temperature and used as an electrode material for application in capacitors. The effects of different treatment processes on the electrochemical properties of sludge materials were compared. The results of electrochemical tests showed that the sludge electrode exhibited excellent energy storage performance after HNO3 acidification and KOH activation with a mass ratio of 3:1 (KOH/C). The specific capacitance of the sludge electrode reached 287 F/g at a current density of 1 A/g. In addition, the sludge electrode material showed excellent cycle stability (specific capacity retained at 93.4% after 5000 cycles at 5 A/g). Based on XRD, FTIR, SEM, TEM, and BET surface analysis, the morphology of sludge electrode materials can be effectively regulated by chemical pretreatment. The best-performing material showed a 3D porous morphology with a large specific surface area (2588 m(2)/g) and optimal pore size distribution, improving ion channels and charge conductivity. According to the life cycle assessment of floc sludge utilization, it reduced the resource consumption and toxicity risk by more than 90% compared with ordinary sludge disposal processes. This work provided a cost-effective and eco-friendly sludge reuse method and demonstrated the application potential of sludge-based materials in high-performance supercapacitors. (c) Higher Education Press 2021
KeywordFloc sludge Porous carbon electrode Energy storage performance Supercapacitors
DOI10.1007/s11783-021-1512-5
Language英语
WOS KeywordHIERARCHICAL POROUS CARBON ; SEWAGE-SLUDGE ; WASTE ; ACTIVATION ; REMOVAL
Funding ProjectNational Natural Science Foundation of China[51978643] ; Youth Innovation Promotion Association, CAS[2014037]
WOS Research AreaEngineering ; Environmental Sciences & Ecology
WOS SubjectEngineering, Environmental ; Environmental Sciences
Funding OrganizationNational Natural Science Foundation of China ; Youth Innovation Promotion Association, CAS
WOS IDWOS:000708874900002
PublisherHIGHER EDUCATION PRESS
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Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/50598
Collection中国科学院过程工程研究所
Corresponding AuthorZhao, He
Affiliation1.Chinese Acad Sci, Beijing Engn Res Ctr Proc Pollut Control, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Di,Hou, Rong,Wang, Wenbo,et al. Recovery and reuse of floc sludge for high-performance capacitors[J]. FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING,2022,16(6):12.
APA Zhang, Di,Hou, Rong,Wang, Wenbo,&Zhao, He.(2022).Recovery and reuse of floc sludge for high-performance capacitors.FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING,16(6),12.
MLA Zhang, Di,et al."Recovery and reuse of floc sludge for high-performance capacitors".FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING 16.6(2022):12.
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