Comprehensive Investigation of the Crystal Structure of Cation-Disordered LiVO as a High-Rate Anode Material: Unveiling the Dichotomy between Order and Disorder.

This study investigates mechanochemical synthesis and cation-disordering mechanism of wurtzite-type LiVO (LVO), highlighting its promise as a high-performance anode material for lithium-ion batteries and hybrid supercapacitors. Mechanochemical treatment of pristine LVO using a high-energy ball mill results in a "pure cation-disordered" LVO phase, allowing for meticulous analysis of cation arrangement. The X-ray and neutron diffraction study demonstrates progressive loss of order in LVO crystal with increasing milling duration.

Psychometric Assessment of an Item Bank for Adaptive Testing on Patient-Reported Experience of Care Environment for Severe Mental Illness: Validation Study.

Background: The care environment significantly influences the experiences of patients with severe mental illness and the quality of their care. While a welcoming and stimulating environment enhances patient satisfaction and health outcomes, psychiatric facilities often prioritize staff workflow over patient needs. Addressing these challenges is crucial to improving patient experiences and outcomes in mental health care.

Development of the PREMIUM computerized adaptive testing for measuring the access and care coordination for patients with severe mental illness.

Severe mental illness (SMI) patients often have complex health needs, which makes it difficult to access and coordinate their care. This study aimed to develop a computerized adaptive testing (CAT) tool, PREMIUM CAT-ACC, to measure SMI patients' experience with access and care coordination. This multicenter and cross-sectional study included 496 adult in- and out-patients with SMI (i.

Boosting the lithium-ion storage performance of perovskite SrVO via Sr cation and O anion deficient engineering.

Perovskite SrVO has been investigated as a promising lithium storage anode where the V cation plays the role of the redox center, combining excellent cycle stability and safe operating potential versus Li metal plating, with limited capacity. Here, we demonstrate the possibility to boost the lithium storage properties, by reducing the non-redox active Sr cation content and fine-tuning the O anion vacancies while maintaining a non-stoichiometric SrVO perovskite structure. Theoretical investigations suggest that Sr vacancy can work as favorable Li storage sites and preferential transport channels for guest Li ions, contributing to the increased specific capacity and rate performance.

The origin of stability and high Co redox utilization for FePO-coated LiCoTiPO/MWCNT nanocomposites for 5 V class lithium ion batteries.

Highly-dispersed 10 wt% FePO (FP)-coated LiCoTiPO (LCTP) was successfully synthesized within a multiwalled carbon nanotube matrix our original ultracentrifugation process. 10 wt% FP-coated LCTP sample showed a higher discharge capacity of 116 mA h g together with stable cycle performance over 99% of capacity retention at the 100 cycle in high voltage. A combination of TEM, XRD, XPS, and XAFS analyses suggests that (i) Ti-substitution increases the utilization of Co redox (capacity increase) in LCP crystals by suppressing the CoO formation and creating the vacancies in Co sites, and (ii) the FP-coating brought about the Fe enrichment of the surface of LCTP which prevents an irreversible crystal structure change and electrolyte decomposition during cycling, resulting in the stable cycle performance.