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Title: LiMn{sub 2}O{sub 4} nanorod arrays: A potential three-dimensional cathode for lithium-ion microbatteries

Highlights: • Self-supported LiMn{sub 2}O{sub 4} nanorod arrays are prepared on the Pt substrates. • LiMn{sub 2}O{sub 4} nanorod array cathode exhibits a large areal capacity of 0.25 mAh cm{sup −2}. • LiMn{sub 2}O{sub 4} nanorod array cathode exhibits good cycle performance and rate capability. • LiMn{sub 2}O{sub 4} nanorod arrays are potential cathodes for 3D microbatteries. - Abstract: Although three-dimensional (3D) microbatteries represent great advantage compared to their two-dimensional counterparts, the fabrication of 3D cathode is still a challenge, which holds back the further development of 3D microbatteries. In this work, we present a novel approach for fabrication of LiMn{sub 2}O{sub 4} nanorod arrays as 3D cathode for microbatteries. α-MnO{sub 2} nanotube arrays are firstly grown on the Pt substrate as the template, and LiMn{sub 2}O{sub 4} nanorod arrays are then prepared by lithiation of α-MnO{sub 2} nanotube arrays in molten salt followed by 800 °C annealing in air. In the half cell test, the 3D LiMn{sub 2}O{sub 4} nanorod arrays exhibit both high gravimetric capacity (∼130 mAh g{sup −1}) and areal capacity (∼0.25 mAh cm{sup −2}), while maintaining good cycling stability and rate capability. The facile synthesis and superior electrochemical performance of the three-dimensional LiMn{sub 2}O{sub 4} cathodemore » make it promising for application in microbatteries.« less
Authors:
;  [1] ;  [2] ; ; ;  [1] ;  [3] ;  [4] ;  [1] ;  [2]
  1. School of Materials Science and Engineering, Nanjing University of Science and Technology, Xiaolingwei 200, Nanjing 210094 (China)
  2. (China)
  3. Department of Chemistry, M. V. Lomonosov Moscow State University, Moscow 119991 (Russian Federation)
  4. Department of Physical Chemistry Engineering, M. V. Lomonosov Moscow State University, Moscow 119991 (Russian Federation)
Publication Date:
OSTI Identifier:
22475862
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 69; Conference: ISFM 2014: 6. international symposium on functional materials, Singapore (Singapore), 4-7 Aug 2014; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; ANNEALING; CAPACITY; CATHODES; ELECTRIC BATTERIES; ELECTROCHEMISTRY; ENERGY STORAGE; LITHIUM COMPOUNDS; LITHIUM IONS; MANGANATES; MANGANESE OXIDES; MOLTEN SALTS; NANOSTRUCTURES; NANOTUBES; STABILITY; SUBSTRATES; SYNTHESIS