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3D Architectured Anodes for Lithium‐Ion Microbatteries with Large Areal Capacity
Author(s) -
Cirigliano Nicolas,
Sun Guangyi,
Membreno Daniel,
Malati Peter,
Kim C. J.,
Dunn Bruce
Publication year - 2014
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.201402018
Subject(s) - microscale chemistry , miniaturization , anode , battery (electricity) , microelectronics , nanotechnology , materials science , carbon footprint , fabrication , electronics , lithium (medication) , lithium ion battery , carbon fibers , electrode , footprint , engineering physics , electrical engineering , engineering , greenhouse gas , composite material , chemistry , alternative medicine , mathematics , endocrinology , ecology , pathology , composite number , biology , paleontology , power (physics) , quantum mechanics , medicine , physics , mathematics education
Progress in the miniaturization of batteries has lagged well behind that of microelectronics. Although lithium‐ion (Li‐ion) battery technology has been vital in advancing portable consumer electronics, it is not clear whether future generations of microscale devices can be powered using traditional battery designs. In this paper, we report on the fabrication and properties of battery electrodes comprised of arrays of vertically aligned carbon rods. The electrodes exhibit good reversibility and represent the first carbon arrays to achieve areal capacities greater than 5 mAh cm −2 at relatively large current densities, although the capacity does fade with cycling. The 3D battery designs based on these architectures offer the promise of achieving high energy densities within small footprint areas.