In-situ Ti-doped modification of layer-structured Ni-rich LiNiCoMnO cathode materials for high-energy lithium-ion batteries.

The further commercialization of layer-structured Ni-rich LiNiCoMnO (NCM83) cathode for high-energy lithium-ion batteries (LIBs) has been challenged by severe capacity decay and thermal instability owing to the microcracks and harmful phase transitions. Herein, Ti-doped NCM83 cathode materials are rationally designed via a simple and low-cost in-situ modification method to improve the crystal structure and electrode-electrolyte interface stability by inhibiting irreversible polarizations and harmful phase transitions of the NCM83 cathode materials due to Ti-doped forms stronger metal-O bonds and a stable bulk structural. In addition, the optimal doping amount of the composite cathode material is also determined through the results of physical characterization and electrochemical performance testing.

Revealing the effect of Nb on the electrochemical performance of nickel-rich layered LiNiCoMnO oxide cathode for lithium-ion batteries.

The layered Nb-doped LiNiCoMnO (NCM) oxide cathode materials are successfully synthesized through introducing NbO into the precursor NiCoMn(OH) during the lithiation process. The results refined by GSAS software present that the Nb-doped samples possess the perfect crystal structure with broader Li diffusion pathways. Moreover, the morphology characterized by scanning electron microscope displays the compact secondary particles packed by smaller primary particles under the effect of Nb.

Moderate-Intensity Physical Exercise Affects the Exercise Performance and Gut Microbiota of Mice.

The gut microbiota is closely associated with the health of the host and is affected by many factors, including exercise. In this study, we compared the gut microbial changes and exercise performance over a 14-week period in mice that performed exercise (NE; n = 15) and mice that did not perform exercise (NC; n = 15). Mice were subjected to stool collection and exercise tests one week prior to adaptive training and after 2, 6, 10, and 14 weeks of exercise.