1
|
Zhu X, Liu S. Al2O3-assisted synthesis of hollow CuCo2S4 nanospheres with rich sulfur vacancies for hybrid supercapacitor. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
2
|
Ren X, Sun M, Gan Z, Li Z, Cao B, Shen W, Fu Y. Hierarchically nanostructured Zn 0.76C 0.24S@Co(OH) 2 for high-performance hybrid supercapacitor. J Colloid Interface Sci 2022; 618:88-97. [PMID: 35334365 DOI: 10.1016/j.jcis.2022.03.069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 03/09/2022] [Accepted: 03/16/2022] [Indexed: 12/15/2022]
Abstract
It is a great challenge to achieve both high specific capacity and high energy density of supercapacitors by designing and constructing hybrid electrode materials through a simple but effective process. In this paper, we proposed a hierarchically nanostructured hybrid material combining Zn0.76Co0.24S (ZCS) nanoparticles and Co(OH)2 (CH) nanosheets using a two-step hydrothermal synthesis strategy. Synergistic effects between ZCS nanoparticles and CH nanosheets result in efficient ion transports during the charge-discharge process, thus achieving a good electrochemical performance of the supercapacitor. The synthesized ZCS@CH hybrid exhibits a high specific capacity of 1152.0 C g-1 at a current density of 0.5 A g-1 in 2 M KOH electrolyte. Its capacity retention rate is maintained at ∼ 70.0% when the current density is changed from 1 A g-1 to 10 A g-1. A hybrid supercapacitor (HSC) assembled from ZCS@CH as the cathode and active carbon (AC) as the anode displays a capacitance of 155.7 F g-1 at 0.5 A g-1, with a remarkable cycling stability of 91.3% after 12,000cycles. Meanwhile, this HSC shows a high energy density of 62.5 Wh kg-1 at a power density of 425.0 W kg-1, proving that the developed ZCS@CH is a promising electrode material for energy storage applications.
Collapse
Affiliation(s)
- Xiaohe Ren
- School of Physics, University of Electronic Science and Technology of China, Chengdu 6111731, PR China
| | - Mengxuan Sun
- School of Physics, University of Electronic Science and Technology of China, Chengdu 6111731, PR China
| | - Ziwei Gan
- School of Physics, University of Electronic Science and Technology of China, Chengdu 6111731, PR China
| | - Zhijie Li
- School of Physics, University of Electronic Science and Technology of China, Chengdu 6111731, PR China.
| | - Baobao Cao
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University, Chengdu 610031, PR China
| | - Wenzhong Shen
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Science, Taiyuan 030001, PR China
| | - YongQing Fu
- Faculty of Engineering and Environment, Northumbria University, Newcastle Upon Tyne NE1 8ST, UK.
| |
Collapse
|
3
|
Wang J, Wang Y, Zhang D, Chen C. Intrinsic Oxidase-like Nanoenzyme Co 4S 3/Co(OH) 2 Hybrid Nanotubes with Broad-Spectrum Antibacterial Activity. ACS APPLIED MATERIALS & INTERFACES 2020; 12:29614-29624. [PMID: 32501670 DOI: 10.1021/acsami.0c05141] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Improving the antibacterial activity of nanomaterials and avoiding the use of H2O2 are vital for biosecurity and public health. In this work, novel Co4S3/Co(OH)2 hybrid nanotubes (HNTs) for the first time were successfully synthesized through the control of Na2S treatment of Co(CO3)0.35Cl0.20(OH)1.10 precursor. On the basis of Kirkendall effect, acicular precursor was vulcanized to form Co4S3/Co(OH)2 HNTs that possess great properties including favorable storage ability and ideal stability. By tailoring the composition and structure, Co4S3/Co(OH)2 HNTs were found to have profound oxidase-like catalytic activities. When pH = 3 precursor was treated with 900 mg of Na2S, Co4S3/Co(OH)2 HNTs exhibit superior performance. Owing to the outstanding oxidase-like activity, Co4S3/Co(OH)2 HNTs can eliminate Escherichia coli, Pseudomonas aeruginosa, Staphylococcus sciuri, and Bacillus without the help of H2O2. It turned out that the sterilization ability came from the superoxide anion radical generated by Co4S3/Co(OH)2 HNTs. With Co4S3/Co(OH)2 HNTs, the intracellular reactive oxygen species level can be enhanced and the toxicity of H2O2 can be absolutely avoided. Overall, the synthesis of antibacterial nanomaterials is unparalleled and the results of this work would facilitate the utilization in medical science, new energy, and environmental catalysis.
Collapse
Affiliation(s)
- Jin Wang
- CAS Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, No. 7 Nanhai Road, Qingdao 266071, China
- University of Chinese Academy of Sciences, No. 19 (Jia) Yuquan Road, Beijing 100039, China
- Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology, No. 1 Wenhai Road, Qingdao 266237, China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, No. 7 Nanhai Road, Qingdao 266071, China
| | - Yi Wang
- CAS Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, No. 7 Nanhai Road, Qingdao 266071, China
- Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology, No. 1 Wenhai Road, Qingdao 266237, China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, No. 7 Nanhai Road, Qingdao 266071, China
| | - Dun Zhang
- CAS Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, No. 7 Nanhai Road, Qingdao 266071, China
- Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology, No. 1 Wenhai Road, Qingdao 266237, China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, No. 7 Nanhai Road, Qingdao 266071, China
| | - Chao Chen
- CAS Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, No. 7 Nanhai Road, Qingdao 266071, China
- University of Chinese Academy of Sciences, No. 19 (Jia) Yuquan Road, Beijing 100039, China
- Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology, No. 1 Wenhai Road, Qingdao 266237, China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, No. 7 Nanhai Road, Qingdao 266071, China
| |
Collapse
|