@article{e014a8de3d85442abfd3c58a590d1542,
title = "Three-dimensional holey-graphene/niobia composite architectures for ultrahigh-rate energy storage",
abstract = "Nanostructured materials have shown extraordinary promise for electrochemical energy storage but are usually limited to electrodes with rather low mass loading (∼1 milligram per square centimeter) because of the increasing ion diffusion limitations in thicker electrodes. We report the design of a three-dimensional (3D) holey-graphene/niobia (Nb2O5) composite for ultrahigh-rate energy storage at practical levels of mass loading (>10 milligrams per square centimeter). The highly interconnected graphene network in the 3D architecture provides excellent electron transport properties, and its hierarchical porous structure facilitates rapid ion transport. By systematically tailoring the porosity in the holey graphene backbone, charge transport in the composite architecture is optimized to deliver high areal capacity and high-rate capability at high mass loading, which represents a critical step forward toward practical applications.",
author = "Hongtao Sun and Lin Mei and Junfei Liang and Zipeng Zhao and Chain Lee and Huilong Fei and Mengning Ding and Jonathan Lau and Mufan Li and Chen Wang and Xu Xu and Guolin Hao and Benjamin Papandrea and Imran Shakir and Bruce Dunn and Yu Huang and Xiangfeng Duan",
note = "Funding Information: H.S., H.F., and I.S. extend sincere appreciation to the Deanship of Scientific Research at King Saud University for its funding of this research through grant PEJP-17-01 (material preparation and electrochemical studies). X.D. and M.L. thank the U.S. Department of Energy (DOE) Office of Basic Energy Sciences, Division of Materials Science and Engineering, award DE-SC0008055 (structural characterizations). Y.H. M.D. and Z.Z. appreciate the support from the National Science Foundation through award DMR-1437263 (ion transport studies). B.D. and J.L. greatly appreciate the support by the Office of Naval Research (N00014-16-1-2164) (impedance analysis). L.M., J.L., X.X., and G.H. thank the Chinese Scholar Council scholarship for the financial support (materials preparation of electrochemical studies). L.M. also thanks a postdoctoral fellowship from Hunan University. Holy-graphene/niobia composite are available from the University of California, Los Angeles (UCLA) under a materials transfer agreement with the University. A provisional patent application has been filed by UCLA (UCLA Case 2017-216) that covers the subject described here. Publisher Copyright: {\textcopyright} 2017, American Association for the Advancement of Science. All rights reserved.",
year = "2017",
month = may,
day = "12",
doi = "10.1126/science.aam5852",
language = "English (US)",
volume = "356",
pages = "599--604",
journal = "Science",
issn = "0036-8075",
publisher = "American Association for the Advancement of Science",
number = "6338",
}