Origin and Suppression of Intragranular Cracks for Long-Cycling High-Ni Co-Free Cathodes.

Intragranular cracks have been identified as a direct reflection of failure in high-energy-density cathodes, especially for high-Ni Co-free cathodes with severe electrochemical-mechanical degradation. Here we show that antiphase boundaries (APBs) are prone to form in high-Ni Co-free cathodes and demonstrate their crucial role in determining the formation of intragranular cracks. The results show that the APBs grain boundaries are continuously expand during the electrochemical process, and their presence promotes the formation and accumulation of heterogeneous internal stresses within the layered structure, which in turn facilitates the nucleation and expansion of intragranular cracks.

Increased long-term central memory T cells in patients with retreatment pulmonary tuberculosis.

Background: T cells are crucial in controlling Mycobacterium tuberculosis infection and disease progression. Nevertheless, the specific functions and changes of T lymphocyte subsets in retreatment tuberculosis remain poorly understand. The study aims to identify the changes in T lymphocyte subsets and the immunoprotective effect of T in retreatment tuberculosis.

Modulation of the structure and morphology of NiCoS by varying the anion types of nickel and cobalt salts to achieve high-rate supercapacitive performance.

In this work, the structure and morphology of NiCoS (NCS) were modulated by varying the anion types (Cl, CHCOO, and NO) of nickel and cobalt salts. Extensive material characterization and analyses revealed that the grain size of the obtained NCSs was determined by different solvation free energies, capping effects, and steric hindrance during the crystal growth process. Among these three anions, Cl, with the smallest ionic size, exhibited the lowest capping effect, steric hindrance, and solvation free energy, leading to the largest average grain size of 15.

Interfacial Robustness and Improved Kinetics of Single-Crystal Ni-Rich Co-Free Cathodes Enabled by Surface Crystal-Facet Modulation.

The elimination of Co from Ni-rich layered cathodes is critical to reduce the production cost and increase the energy density for sustainable development. Herein, a delicate strategy of crystal-facet modulation is designed and explored, which is achieved by simultaneous Al/W-doping into the precursors, while the surface role of the crystal-facet is intensively revealed. Unlike traditional studies on crystal structure growth along a certain direction, this work modulates the crystal-facet at the nanoscale based on the effect of W-doping dynamic migration with surface energy, successfully constructing the core-shell (003)/(104) facet surface.

Strong Oxidizing Molten Salts for Strengthening Structural Restoration Enabling Direct Regeneration of Spent Layered Cathode.

As a mainstream technology for recycling spent lithium-ion batteries, direct regeneration is rapidly developed due to its high efficiency and green characteristics. However, efficient reuse of spent LiNiCoMn O cathode is still a significant challenge, as the rock salt/spinel phase on the surface hinders the Li replenishment and phase transformation to the layered structure. In this work, the fundamental understanding of the repair mechanism is confirmed that the oxidizing atmosphere is the crucial factor that can greatly improve the rate and degree of phase restoration.

Impact of anemia on prognosis in tuberculosis patients.

Background: Anemia is one of the risk factors for tuberculosis (TB), and more than 90% of TB patients suffer from anemia. The majority tuberculosis patients who had poor prognosis experienced anemia during the course of treatment. The objective of our study is to analyse the influences of anemia on the prognosis of tuberculosis patients in terms of pulmonary M.

In situ amination and side group effect of multifunctional heterocyclic thione ligand toward discrete and polymeric cluster constructions.

Three metal complexes [Cu(I)6(atdm)6] (1), [Cu(I)(Hatd)(H2atd)] (2) and [H3O][Co(II)4Co(III)2Cl3(atd)6]·H2O (3) [atdm = 4-dimethylamino-6-anilino-1,3,5-triazine-2-thiolate, H2atd = 6-anilino-1,3,5-triazine-2,4-dithiol, atdH2 = 6-anilino-1,3,5-triazine-2,4(1H,3H)-dithione] have been solvothermally synthesized. The luminescent complexes 1 and 2 provide remarkable structural diversity depending on different reaction solutions. Complex 1 consists of a discrete pseudohexagonal prismatic [Cu6S6] core that can be described as two stacked, chair-shaped [Cu3S3] rings bound together by the C-N bridges of the atdm ligands, in which the atdm ligand was generated via in situ amination of H2atd in the presence of DMF solution.