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Three‐Dimensional Hierarchical Nanoporosity for Ultrahigh Power and Excellent Cyclability of Electrochemical Pseudocapacitors
Author(s) -
Lang Xingyou,
Hirata Akihiko,
Fujita Takeshi,
Chen Mingwei
Publication year - 2014
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201301809
Subject(s) - pseudocapacitor , materials science , nanoporous , electrolyte , supercapacitor , oxide , electrochemistry , power density , nanotechnology , chemical engineering , electrochemical energy storage , power (physics) , electrode , chemistry , metallurgy , physics , quantum mechanics , engineering
Electronic and ionic conductivity of pseudocapacitive SnO 2 can be dramatically improved by a hierarchically oxide/metal nanoporous structure. The hierarchical nanoporosity gives rise to an exceptionally high volumetric power density of 257 W cm – 3 and excellent cycling stability along with high volumetric energy density and ultrafast rate capability in both aqueous and nonaqueous electrolytes.