A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Co-precipitation of Mg-doped Ni0.8Co0.1Mn0.1(OH)2 : effect of magnesium doping and washing on the battery cell performance (2023)

Laine, P., Hietaniemi, M., Välikangas, J., Kauppinen, T., Tynjälä, P., Hu, T., Wang, S., Singh, H., & Lassi, U. (2023). Co-precipitation of Mg-doped Ni0.8Co0.1Mn0.1(OH)2 : effect of magnesium doping and washing on the battery cell performance. Dalton Transactions, 52(5), 1413-1424. https://doi.org/10.1039/D2DT02246J

JYU-tekijät tai -toimittajat

Julkaisun tiedot

Julkaisun kaikki tekijät tai toimittajat: Laine, Petteri; Hietaniemi, Marianna; Välikangas, Juho; Kauppinen, Toni; Tynjälä, Pekka; Hu, Tao; Wang, Shubo; Singh, Harishchandra; Lassi, Ulla

Lehti tai sarja: Dalton Transactions

ISSN: 1477-9226

eISSN: 1477-9234

Julkaisuvuosi: 2023

Ilmestymispäivä: 04.01.2023

Volyymi: 52

Lehden numero: 5

Artikkelin sivunumerot: 1413-1424

Kustantaja: Royal Society of Chemistry

Julkaisumaa: Britannia

Julkaisun kieli: englanti

DOI: https://doi.org/10.1039/D2DT02246J

Julkaisun avoin saatavuus: Avoimesti saatavilla

Julkaisukanavan avoin saatavuus: Osittain avoin julkaisukanava

Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/85709

Lisätietoja: This article is part of the themed collection: Nordic Collection.

Tiivistelmä

Co-precipitation of Ni0.8Co0.1Mn0.1(OH)2 (NCM811) and Mg-doped (0.25 wt% and 0.5 wt%) NCM811 precursors is carried out from concentrated metal sulphate solutions. In this paper, the aim is to study the role of magnesium dopant in the co-precipitation step of NCM811, the cathode active material and further the Li-ion battery cell performance. Based on the results, magnesium was fully co-precipitated in the NCM811 precursors, as expected from thermodynamic calculations. The presence of magnesium in these precursors was also confirmed by several characterization methods and magnesium was evenly distributed in the sample. It was observed that tapped density decreased and surface area increased with an expected increase in Mg content. Surprisingly, Mg doping did not improve the cyclability of coin cells, due to the stable crystal structure of NCM811. However, a slight improvement in cyclability was seen in pouch cells after 1000 cycles. A washing effect was clearly seen in lattice parameters and washing also decreased the capacity retention after 62 cycles for all samples.

YSO-asiasanat: litiumioniakut; elektrodit; douppaus (puolijohdetekniikka); magnesium; sähkökemia

Vapaat asiasanat: co-precipitation; magnesium

Liittyvät organisaatiot

OKM-raportointi: Kyllä

Raportointivuosi: 2023

Alustava JUFO-taso: 1