Fundamental Triangular Interaction of Electron Trajectory Deviation and P-N Junction to Promote Redox Reactions for the High-Energy-Density Electrode | |
Shang, Wen; Tan, Yongtao; Kong, Lingbin; Ran, Fen | |
刊名 | ACS Applied Materials and Interfaces |
2020-07-01 | |
卷号 | 12期号:26页码:29404-29413 |
关键词 | Activated carbon Activation energy Capacitance Electrodes Energy storage Fiber optic sensors Gold nanoparticles Metal nanoparticles Metals Molybdenum oxide Nickel oxide Semiconductor junctions Active electrode materials Capacitance retention Electrochemical performance Electron trajectories High energy densities Mass specific capacitances Specific capacitance Ternary nanocomposites |
ISSN号 | 19448244 |
DOI | 10.1021/acsami.0c08299 |
英文摘要 | Highly efficient redox reaction of active electrode materials is the guarantee for achieving high energy density for energy storage devices. Here, we design a triangle of the electrode material involving the P-N junction between NiO (p-type) and MoO3 (n-type) and electron trajectory deviation between gold nanoparticles with NiO or MoO3. This optimized fundamental triangle structure could facilitate the redox reaction of a metal oxide, and thus the fabricated ternary nanocomposites exhibit excellent electrochemical performance. At a lower current density (0.5 A g-1), the mass specific capacitance of a single electrode can reach 943.3 F g-1, while the NiO/MoO3 tested under the same conditions only has a specific capacitance of 278.9 F g-1. The assembled asymmetric device with activated carbon shows a higher capacitance retention rate of 98.7% after long-term cycling under different current densities, and a maximum energy density of 28.9 W h kg-1 (power density of 400.1 W kg-1). The crucial prerequisite of this strategy is the lower work function of gold nanoparticles compared with active materials, which significantly reduce the activation energy of NiO/MoO3 and the formed P-N junction between p-type NiO with n-type MoO3 in their contact interfaces. This novel design of a triangle structure could be expected to be applied in other materials to develop a kind of energy storage device with excellent electrochemical performance. Copyright © 2020 American Chemical Society. |
WOS研究方向 | Science & Technology - Other Topics ; Materials Science |
语种 | 英语 |
出版者 | American Chemical Society |
WOS记录号 | WOS:000546698600049 |
内容类型 | 期刊论文 |
源URL | [http://ir.lut.edu.cn/handle/2XXMBERH/115055] |
专题 | 材料科学与工程学院 |
作者单位 | State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, School of Material Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China |
推荐引用方式 GB/T 7714 | Shang, Wen,Tan, Yongtao,Kong, Lingbin,et al. Fundamental Triangular Interaction of Electron Trajectory Deviation and P-N Junction to Promote Redox Reactions for the High-Energy-Density Electrode[J]. ACS Applied Materials and Interfaces,2020,12(26):29404-29413. |
APA | Shang, Wen,Tan, Yongtao,Kong, Lingbin,&Ran, Fen.(2020).Fundamental Triangular Interaction of Electron Trajectory Deviation and P-N Junction to Promote Redox Reactions for the High-Energy-Density Electrode.ACS Applied Materials and Interfaces,12(26),29404-29413. |
MLA | Shang, Wen,et al."Fundamental Triangular Interaction of Electron Trajectory Deviation and P-N Junction to Promote Redox Reactions for the High-Energy-Density Electrode".ACS Applied Materials and Interfaces 12.26(2020):29404-29413. |
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