This title appears in the Scientific Report :
2020
Please use the identifier:
http://dx.doi.org/10.1002/cnma.201900748 in citations.
Please use the identifier: http://hdl.handle.net/2128/24670 in citations.
Nanocellulose‐mediated Transition of Lithium‐rich Pseudo‐quaternary Metal Oxide Nanoparticles into Lithium Nickel Cobalt Manganese oxide (NCM) Nanostructures
Nanocellulose‐mediated Transition of Lithium‐rich Pseudo‐quaternary Metal Oxide Nanoparticles into Lithium Nickel Cobalt Manganese oxide (NCM) Nanostructures
We report the syntheses of various compounds within the pseudo‐quaternary system of the type LiwNixCoyMnzOδ (δ≤1) (pre‐NCMs). Four different compositions of this compound were realized as ultrasmall crystalline nanoparticles of 1–4 nm diameter using low‐temperature solvothermal reaction conditions i...
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Personal Name(s): | Zehetmaier, Peter M. |
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Zoller, Florian / Beetz, Michael / Plaß, Maximilian A. / Häringer, Sebastian / Böller, Bernhard / Döblinger, Markus / Bein, Thomas / Fattakhova-Rohlfing, Dina (Corresponding author) | |
Contributing Institute: |
Werkstoffsynthese und Herstellungsverfahren; IEK-1 |
Published in: | ChemNanoMat, 6 (2020) 4, S. 618-628 |
Imprint: |
Weinheim
Wiley
2020
|
DOI: |
10.1002/cnma.201900748 |
Document Type: |
Journal Article |
Research Program: |
Electrochemical Storage |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/24670 in citations.
We report the syntheses of various compounds within the pseudo‐quaternary system of the type LiwNixCoyMnzOδ (δ≤1) (pre‐NCMs). Four different compositions of this compound were realized as ultrasmall crystalline nanoparticles of 1–4 nm diameter using low‐temperature solvothermal reaction conditions in tert‐butanol at only 170 °C. All of the pre‐NCMs crystallize in the rock‐salt structure and their lithium content is between 20% and 30% with respect to the complete metal content. By adjusting the lithium content to 105% stoichiometry in the solvothermal reaction, the pre‐NCMs can easily react to the respective Li(NixCoyMnz)O2 (NCM) nanoparticles. Furthermore, nanosized desert‐rose structured NCMs were obtained after addition of nanocellulose during the synthesis. By using the mixed metal monoxides as precursor for the NCMs, cation mixing between lithium and nickel is favored and gets more pronounced with increasing nickel content. The cation mixing effect compromises good electrochemical capacity retention, but the desert‐rose structure nevertheless enables enhanced stability at high power conditions, especially for NCM333. |