Lithium ion conductivity of LiLaO2-Li2ZrO3 solid solutions

Fabrication of Li+‐Conductive Li2ZrO3‐Based Shell Encapsulated LiNi0.5Co0.2Mn0.3O2 Microspheres as High‐Rate and Long‐Life Cathode Materials for Li‐Ion Batteries

“…Monoclinic Li 2 ZrO 3 , a layered material with a similar structure to Ni‐rich LNMO oxides, has excellent structure stability in organic electrolyte, and is capable of scavenging and neutralizing the fluoride anions derived from electrolyte decomposition . More importantly, Li 2 ZrO 3 , as a typical solid electrolyte, is believed to possess superior ionic conductivity, owing to its monoclinic crystal structure with lamellar building blocks, where lithium ions are located among the (ZrO 3 ) 2− layers, thereby offering a three‐dimensional (3D) tunnel for the Li + diffusion process . In addition, it has been reported that Zr‐based doping also contributes to strengthen the structure stability of Ni‐rich cathode materials .…”

“…[16] More importantly,L i 2 ZrO 3 ,a sat ypical solide lectrolyte, is believed to possess superior ionic conductivity,o wing to its monoclinic crystal structure with lamellar building blocks, where lithium ions are located among the (ZrO 3 ) 2À layers, thereby offering at hree-dimensional (3D) tunnel for the Li + diffusion process. [17] In addition, it hasb een reported that Zrbased doping also contributest os trengthent he structure stability of Ni-rich cathode materials. [18] In this respect, it is feasible to construct aL i + -conductiveL i 2 ZrO 3 coating layer at the top surface and the bulk of host materials, which can significantly help to improve the cycling stability as well as the rate capability of electrode materials.…”

A study of suppressed formation of low-conductivity phases in doped Li7La3Zr2O12 garnets by in situ neutron diffraction

“…Besides the tetragonal LLZO, the secondary phases usually form during garnet synthesis. The La 2 Zr 2 O 7 pyrochlore was mostly reported in the as-synthesized garnet sample, [27][28][29][30][31] which was thought to result from the Li [32][33][34] with the garnet apparently breaks up the conductive bulk of the solid electrolyte, leading to the impedance increasing. Whereas, particular dopants have also been designed, as a ceramic.…”

“…30) if the Al dopant is employed. The coexistence of the secondary phases that have rather poor Li + conductivity [32][33][34] with the garnet apparently breaks up the conductive bulk of the solid electrolyte, leading to the increase in impedance. However, particular dopants have also been designed, as a sintering aid, 32 to form a glassy conductive phase connecting the garnet grains 7 and achieve a larger density of the ceramic.…”

The effect of energetically coated ZrOx on enhanced electrochemical performances of Li(Ni1/3Co1/3Mn1/3)O2 cathodes using modified radio frequency (RF) sputtering

“…In effect, various stoichiometric Li y ZrO z are known as materials exhibiting high Li-ion conductivity ranging from 4.9 Â 10 À5 to 2.4 Â 10 À4 S cm À1 . 17,28 As the transformation proceeded, the diffusion of Li ions through the coating layers was no longer restricted, and D Li of the coated electrodes recovered to the original value of L333. In addition, the recovery rate of D Li is inversely proportional to the sputtering time of the ZrO x layer because thinner coating layers are more favored for fast transformation into Li-ion conducting materials, i.e., Li x ZrO y .…”