%0 Journal Article
%A An, Siyu
%A Karger, Leonhard
%A Müller, Philipp
%A Lin, Jing
%A Vasala, Sami
%A Baran, Volodymyr
%A Dreyer, Sören L.
%A Zhang, Ruizhuo
%A Ulusoy, Fatih
%A Kondrakov, Aleksandr
%A Janek, Juergen
%A Brezesinski, Torsten
%T Exploring calcium pillaring of O3-type NaNi<sub>0.9</sub>Ti<sub>0.1</sub>O<sub>2</sub> cathodes to advance Na-ion battery technology
%J The chemical engineering journal
%V 509
%@ 1385-8947
%C Amsterdam
%I Elsevier
%M PUBDB-2025-02386
%P 160939
%D 2025
%Z ISSN 1385-8947 not unique: **2 hits**.
%X NaNi<sub>0.9</sub>Ti<sub>0.1</sub>O<sub>2</sub> (NNTO), a promising sodium-ion cathode material, is capable of delivering high specific capacities but is compromised by structural degradation at high potentials and poor redox stability. Herein, we introduced varying amounts of Ca<sup>2+</sup> as pillaring ions into the intercalation sites of NNTO to examine their effect on structure and electrochemical performance. Laboratory X-ray diffraction and charge/discharge testing identified Na<sub>0.95</sub>Ca<sub>0.025</sub>Ni<sub>0.9</sub>Ti<sub>0.1</sub>O<sub>2</sub> (CaNNTO) as the optimal composition in terms of interlayer spacing, rate capability, and cycling stability. Specifically, the capacity retention after 200 cycles improved from 27 to 48 
%F PUB:(DE-HGF)16
%9 Journal Article
%R 10.1016/j.cej.2025.160939
%U https://bib-pubdb1.desy.de/record/633260