A Lithographically Patterned Capacitor with Horizontal Nanowires of Length 2.5 mm

Autor:	Mya Le Thai, Xiaowei Li, Wendong Xing, Wenbo Yan, Reginald M. Penner, Rajen K. Dutta
Rok vydání:	2014
Předmět:	Materials science business.industry Shell (structure) Nanowire Nanotechnology Nanowire array law.invention Core (optical fiber) Capacitor Planar law Optoelectronics General Materials Science Photolithography business Power density
Zdroj:	ACS Applied Materials & Interfaces. 6:5018-5025
ISSN:	1944-8252 1944-8244
DOI:	10.1021/am500051d
Popis:	A symmetrical hybrid capacitor consisting of interdigitated, horizontal nanowires is described. Each of the 750 nanowires within the capacitor is 2.5 mm in length, consisting of a gold nanowire core (40 × ≈200 nm) encapsulated within a hemicylindrical shell of δ-phase MnO2 (thickness = 60-220 nm). These Au@δ-MnO2 nanowires are patterned onto a planar glass surface using lithographically patterned nanowire electrodeposition (LPNE). A power density of 165 kW/kg and energy density of 24 Wh/kg were obtained for a typical nanowire array in which the MnO2 shell thickness was 68 ± 8 nm. Capacitors incorporating these ultralong nanowires lost ≈10% of their capacity rapidly, during the first 20 discharge cycles, and then retained 90% of their maximum capacity for the ensuing 6000 cycles. The ability of capacitors consisting of ultralong Au@δ-MnO2 nanowires to simultaneously deliver high power and high capacity with acceptable cycle life is demonstrated.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c08f3d976dd4069d9a9d235ba41e8af3 https://doi.org/10.1021/am500051d Zobrazit plný text záznamu