期刊
ADVANCED MATERIALS
卷 30, 期 17, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201705713
关键词
capacitive energy storage; dense electrodes; electrolyte ions; pore engineering; volumetric performance
类别
资金
- National Basic Research Program of China [2015CB965000]
- National Natural Science Foundation of China [21303251, U1503292]
- Innovation Program of Shanghai Municipal Education Commission [16SG17]
With the rapid development of mobile electronics and electric vehicles, future electrochemical capacitors (ECs) need to store as much energy as possible in a rather limited space. As the core component of ECs, dense electrodes that have a high volumetric energy density and superior rate capability are the key to achieving improved energy storage. Here, the significance of and recent progress in the high volumetric performance of dense electrodes are presented. Furthermore, dense yet porous electrodes, as the critical precondition for realizing superior electrochemical capacitive energy, have become a scientific challenge and an attractive research focus. From a pore-engineering perspective, insight into the guidelines of engineering the pore size, connectivity, and wettability is provided to design dense electrodes with different porous architectures toward high-performance capacitive energy storage. The current challenges and future opportunities toward dense electrodes are discussed and include the construction of an orderly porous structure with an appropriate gradient, the coupling of pore sizes with the solvated cations and anions, and the design of coupled pores with diverse electrolyte ions.
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