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On the Sensitivity of the Ni-rich Layered Cathode Materials for Li-ion Batteries to the Different Calcination Conditions

1
Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
2
Centre for Advanced Materials and Technology CEZAMAT, Warsaw University of Technology, Poleczki 19, 02-822 Warsaw, Poland
3
Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, 50-950 Wrocław, Poland
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Nanomaterials 2020, 10(10), 2018; https://doi.org/10.3390/nano10102018
Received: 25 September 2020 / Revised: 9 October 2020 / Accepted: 10 October 2020 / Published: 13 October 2020
(This article belongs to the Section Synthesis, Interfaces and Nanostructures)
Ni-rich layered oxides, i.e., LiNi0.6Mn0.2Co0.2O2 (NMC622) and LiNiO2 (LNO), were prepared using the two-step calcination procedure. The samples obtained at different calcination temperatures (750–950 °C for the NMC622 and 650–850 °C for the LNO cathode materials) were characterized using nitrogen physisorption, PXRD, SEM and DLS methods. The correlation of the calcination temperature, structural properties and electrochemical performance of the studied Ni-rich layered cathode materials was thoroughly investigated and discussed. It was determined that the optimal calcination temperature is dependent on the chemical composition of the cathode materials. With increasing nickel content, the optimal calcination temperature shifts towards lower temperatures. The NMC-900 calcined at 900 °C and the LNO-700 calcined at 700 °C showed the most favorable electrochemical performances. Despite their well-ordered structure, the materials calcined at higher temperatures were characterized by a stronger sintering effect, adverse particle growth, and higher Ni2+/Li+ cation mixing, thus deteriorating their electrochemical properties. The importance of a careful selection of the heat treatment (calcination) temperature for each individual cathode material was emphasized. View Full-Text
Keywords: Li-ion battery; cathode; Ni-rich layered oxide; NMC; LNO; calcination; heat-treatment Li-ion battery; cathode; Ni-rich layered oxide; NMC; LNO; calcination; heat-treatment
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MDPI and ACS Style

Ronduda, H.; Zybert, M.; Szczęsna-Chrzan, A.; Trzeciak, T.; Ostrowski, A.; Szymański, D.; Wieczorek, W.; Raróg-Pilecka, W.; Marcinek, M. On the Sensitivity of the Ni-rich Layered Cathode Materials for Li-ion Batteries to the Different Calcination Conditions. Nanomaterials 2020, 10, 2018. https://doi.org/10.3390/nano10102018

AMA Style

Ronduda H, Zybert M, Szczęsna-Chrzan A, Trzeciak T, Ostrowski A, Szymański D, Wieczorek W, Raróg-Pilecka W, Marcinek M. On the Sensitivity of the Ni-rich Layered Cathode Materials for Li-ion Batteries to the Different Calcination Conditions. Nanomaterials. 2020; 10(10):2018. https://doi.org/10.3390/nano10102018

Chicago/Turabian Style

Ronduda, Hubert, Magdalena Zybert, Anna Szczęsna-Chrzan, Tomasz Trzeciak, Andrzej Ostrowski, Damian Szymański, Władysław Wieczorek, Wioletta Raróg-Pilecka, and Marek Marcinek. 2020. "On the Sensitivity of the Ni-rich Layered Cathode Materials for Li-ion Batteries to the Different Calcination Conditions" Nanomaterials 10, no. 10: 2018. https://doi.org/10.3390/nano10102018

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