Different strategies of introduction of lithium ions into nickel‑manganese‑cobalt carbonate resulting in LiNi0.6Mn0.2Co0.2O2 (NMC622) cathode material for Li-ion batteries

Magdalena Zybert , Hubert Ronduda , Anna Szczęsna , Tomasz Trzeciak , Andrzej Ostrowski , Elżbieta Żero , Władysław Wieczorek , Wioletta Raróg-Pilecka , Marek Marcinek

Abstract

The new strategies of introducing lithium ions into nickel‑manganese‑cobalt carbonate resulting in LiNi0.6Mn0.2Co0.2O2 (NMC622) cathode material for Li-ion batteries were described. The proposed novel method is based on the co-precipitation of nickel‑manganese‑cobalt carbonate followed by wet impregnation with solutions of selected lithium salts (hydroxide, acetate or nitrate). The results of detailed characterization studies using nitrogen physisorption, TGA-MS, PXRD, SEM and DLS analysis indicate that wet impregnation using different lithium salts formed cathode materials of well-ordered layered structure with chemical composition and microstructure similar to that obtained using solid state reaction method. Galvanostatic cell cycling revealed promising electrochemical activity of all the NMC622 materials prepared using the proposed method. The first cycle discharge capacities of the materials obtained using lithium hydroxide, acetate, nitrate and carbonate are 177, 181, 180 and 187 mAh g1at 0.05C rate to 4.4 V vs. Li/Li+, whereas the discharge capacity retentions are 88, 91, 93 and 91% at 0.5C rate after 30 cycles, respectively. The best performance in the range of 0.1C-10C rates exhibited the cathode materials synthesized by wet impregnation method using lithium acetate and lithium nitrate as Li ions precursor.

Author Magdalena Zybert (FC / CChT)
Magdalena Zybert,,
- Chair of Chemical Technology
, Hubert Ronduda (FC / CChT)
Hubert Ronduda,,
- Chair of Chemical Technology
, Anna Szczęsna (FC / CofIC)
Anna Szczęsna,,
- Chair Of Inorganic Chemistry
, Tomasz Trzeciak (CAMT | CofIC)
Tomasz Trzeciak,,
- The Centre for Advanced Materials and Technologies
, Andrzej Ostrowski (FC / CofIC)
Andrzej Ostrowski,,
- Chair Of Inorganic Chemistry
, Elżbieta Żero (FC / CofIC)
Elżbieta Żero,,
- Chair Of Inorganic Chemistry
, Władysław Wieczorek (FC / CofIC)
Władysław Wieczorek,,
- Chair Of Inorganic Chemistry
, Wioletta Raróg-Pilecka (FC / CChT)
Wioletta Raróg-Pilecka,,
- Chair of Chemical Technology
, Marek Marcinek (FC / CofIC)
Marek Marcinek,,
- Chair Of Inorganic Chemistry
Journal seriesSolid State Ionics, ISSN 0167-2738, e-ISSN 1872-7689
Issue year2020
Vol348
Pages1-10
Publication size in sheets0.5
Article number115273
Keywords in EnglishLi-ion battery, Cathode material, NMC622, Lithium precursor, Wet impregnation
ASJC Classification1600 General Chemistry; 2500 General Materials Science; 3104 Condensed Matter Physics
DOIDOI:10.1016/j.ssi.2020.115273
URL https://www.sciencedirect.com/science/article/pii/S0167273820300333
Languageen angielski
Score (nominal)70
Score sourcejournalList
ScoreMinisterial score = 70.0, 22-07-2020, ArticleFromJournal
Publication indicators Scopus Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2017 = 0.952; WoS Impact Factor: 2018 = 2.886 (2) - 2018=2.68 (5)
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