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X‐ray Nano‐computed Tomography of Electrochemical Conversion in Lithium‐ion Battery
Author(s) -
Di Lecce Daniele,
Levchenko Stanislav,
Iacoviello Francesco,
Brett Dan J. L.,
Shearing Paul R.,
Hassoun Jusef
Publication year - 2019
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201901123
Subject(s) - anode , electrochemistry , battery (electricity) , materials science , lithium (medication) , cathode , electrode , ion , lithium ion battery , nano , chemical engineering , precipitation , lithium battery , nanoscopic scale , nanotechnology , chemistry , composite material , medicine , power (physics) , physics , organic chemistry , quantum mechanics , meteorology , ionic bonding , engineering , endocrinology
Herein, a nanometric CuO anode for lithium‐ion batteries was investigated by combining electrochemical measurements and ex situ X‐ray computed tomography (CT) at the nanoscale. The electrode reacted by conversion at about 1.2 and 2.4 V versus Li + /Li during discharge and charge, respectively, to deliver a capacity ranging from 500 mAh g −1 to over 600 mAh g −1 . Three‐dimensional nano‐CT imaging revealed substantial reorganization of the CuO particles and precipitation of a Li + ‐conducting film suitable for a possible application in the battery. A lithium‐ion cell, exploiting the high capacity of the conversion process, was assembled by using a high‐performance LiNi 0.33 Co 0.33 Mn 0.33 O 2 cathode reacting at 3.9 V versus Li + /Li. The cell was proposed as an energy‐storage system with an average working voltage of about 2.5 V, specific capacity of 170 mAh g cathode −1 , and efficiency exceeding 99 % with a very stable cycling.