title: High-throughput compositional and structural evaluation of a Li(a)(Ni(x)Mn(y)Co(z))O(r) thin film battery materials library.
abstract: A Lia(NixMnyCoz)Or cathode materials library was fabricated by combinatorial magnetron sputtering. The compositional analysis of the library was performed by a new high-throughput approach for Li-content measurement in thin films, which combines automated energy-dispersive X-ray spectroscopy, Deuteron-induced gamma emission, and Rutherford backscattering measurements. Furthermore, combining this approach with thickness measurements allows the mapping of density values of samples from the materials library. By correlating the obtained compositional data with structural data from high-throughput X-ray diffraction measurements, those compositions which show a layered (R3̅m) structure and are therefore most interesting for Li-battery applications (for cathode (positive) electrodes) can be rapidly identified. This structure was identified as being most pronounced in the compositions Li0.6(Ni0.16Mn0.35Co0.48)O2, Li0.7(Ni0.10Mn0.37Co0.51)O2, Li0.6(Ni0.23Mn0.33Co0.43)O2, Li0.3(Ni0.65Mn0.08Co0.26)O2, Li0.3(Ni0.63Mn0.08Co0.29)O2, Li0.4(Ni0.56Mn0.09Co0.34)O2, Li0.5(Ni0.45Mn0.13Co0.42)O2, and Li0.6(Ni0.34Mn0.14Co0.52)O2.
authors.affiliation: Institute for Materials, Faculty of Mechanical Engineering, Ruhr-Universität Bochum , Bochum, Germany.
authors.forename: Sara
authors.initials: S
authors.lastname: Borhani-Haghighi
authors.forename: Michael
authors.initials: M
authors.lastname: Kieschnick
authors.forename: Yahya
authors.initials: Y
authors.lastname: Motemani
authors.forename: Alan
authors.initials: A
authors.lastname: Savan
authors.forename: Detlef
authors.initials: D
authors.lastname: Rogalla
authors.forename: Hans-Werner
authors.initials: HW
authors.lastname: Becker
authors.forename: Jan
authors.initials: J
authors.lastname: Meijer
authors.forename: Alfred
authors.initials: A
authors.lastname: Ludwig
mesh_terms: D011211:Electric Power Supplies; D057166:High-Throughput Screening Assays; D018020:Lithium Compounds / Q000737:chemistry*; D015394:Molecular Structure; D014961:X-Ray Diffraction
chemical_list: D018020:Lithium Compounds