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MnCO3 on Graphene Porous Framework via Diffusion-Driven Layerby- Layer Assembly for High-Performance Pseudocapacitor | |
2020-10-21 | |
发表期刊 | ACS APPLIED MATERIALS & INTERFACES |
ISSN | 1944-8244 |
卷号 | 12期号:42页码:47695-47703 |
发表状态 | 已发表 |
DOI | 10.1021/acsami.0c15511 |
摘要 | Diffusion-driven layer-by-layer (dd-LbL) assembly is a simple yet versatile process that can be used to construct graphene oxide (GO) into a three-dimensional (3D) porous framework with good mechanical stability. In particular, the oxygen functional groups on the GO surface are well retained, providing nucleation sites for further chemical reactions to be performed upon. Therefore, such a scaffold should serve as a promising starting material for creating a wide range of 3D graphene-based composites while maintaining a high accessible surface area. Herein, we demonstrate the use of the porous GO macrostructure derived from dd-LbL assembly for the preparation of graphene–MnCO3 hybrid structures. MnCO3 is a newly reported pseudocapacitive material for supercapacitors; however, its electrochemical performance is hampered by its low electrical conductivity and poor chemical stability. Through reaction between KMnO4 and GO during a hydrothermal process, the surface of the porous scaffold was rendered with uniform MnCO3 nanoparticles. With the reduced graphene oxide (rGO) sheets serving as the conductive backbone, the resultant MnCO3 nanoparticles exhibited a capacitance of 698 F g–1 at a charge/discharge current of 0.5 mA (320 F g–1 for the combined rGO and MnCO3 composite). Furthermore, the electrode maintained 77% of its initial capacity even after 5000 cycles of charge/discharge tests at 20 mA |
关键词 | manganese carbonate graphene supercapacitor interfacial assembly diffusion-driven layer-by-layer assembly |
收录类别 | SCI ; SCIE ; EI |
语种 | 英语 |
资助项目 | ShanghaiTech University[2017F0201-000-11] ; School of Physical Science and Technology (SPST) of ShanghaiTech University[EM02161943] |
WOS研究方向 | Science & Technology - Other Topics ; Materials Science |
WOS类目 | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
WOS记录号 | WOS:000584489800053 |
出版者 | AMER CHEMICAL SOC |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/123387 |
专题 | 物质科学与技术学院_硕士生 物质科学与技术学院_PI研究组_Franklin Jongmyung Kim组 |
通讯作者 | Kim, Franklin |
作者单位 | 1.Natl Ctr Nanosci & Technol, CAS Ctr Excellence Nanosci, CAS Key Lab Nanosystem & Hierarch Fabricat, Beijing 100190, Peoples R China 2.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China |
通讯作者单位 | 物质科学与技术学院 |
推荐引用方式 GB/T 7714 | Zhang, Binbin,Li, Xin,Zou, Jianli,et al. MnCO3 on Graphene Porous Framework via Diffusion-Driven Layerby- Layer Assembly for High-Performance Pseudocapacitor[J]. ACS APPLIED MATERIALS & INTERFACES,2020,12(42):47695-47703. |
APA | Zhang, Binbin,Li, Xin,Zou, Jianli,&Kim, Franklin.(2020).MnCO3 on Graphene Porous Framework via Diffusion-Driven Layerby- Layer Assembly for High-Performance Pseudocapacitor.ACS APPLIED MATERIALS & INTERFACES,12(42),47695-47703. |
MLA | Zhang, Binbin,et al."MnCO3 on Graphene Porous Framework via Diffusion-Driven Layerby- Layer Assembly for High-Performance Pseudocapacitor".ACS APPLIED MATERIALS & INTERFACES 12.42(2020):47695-47703. |
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