Li₃VP₃O₉N as a Multielectron Redox Cathode for Li-Ion Battery

Li₃VP₃O₉N was for the first time synthesized from its sodium analogue Na₃VP₃O₉N using a solid–solid Li⁺/Na⁺ ion-exchange method. This lithium variant of nitridophosphate is found to possess similar crystal structure (space group <i>P</i>2₁3) as its sodium analogue Na₃VP₃O₉N (<i>a</i> = 9.4507(1) Å) but with much smaller lattice parameter (<i>a</i> = 9.1237(1) Å). The crystal structure of Li₃VP₃O₉N was solved and refined using combined synchrotron X-ray and time-of-flight neutron powder diffraction data, allowing the three distinct lithium-ion sites to be identified. A lithium bond valence sum difference map calculation suggests the existence of isotropic three-dimensional lithium-ion-conducting pathways with a minimum valence threshold |ΔV| of 0.02. Li₃VP₃O₉N behaves as a promising reversible cathode material for rechargeable lithium-ion batteries with an average V³⁺/V⁴⁺ redox potential of 3.8 V (vs Li⁺/Li). Both cyclic voltammetry tests and chemical delithiation (using NO₂BF₄) indicate it is possible to partially remove the second lithium from the structure, though only at very high potentials (>4.9 V vs Li⁺/Li). It is also found that the unit cell volume of this compound expands instead of shrinking upon lithium removal, a rare phenomenon for polyanion-based cathodes. This abnormal volume expansion is found to be associated with the drastic expansion of the Li1­(O1)₃N tetrahedral site after removing lithium from this site

Li₃VP₃O₉N as a Multielectron Redox Cathode for Li-Ion Battery

Li₃VP₃O₉N was for the first time synthesized from its sodium analogue Na₃VP₃O₉N using a solid–solid Li⁺/Na⁺ ion-exchange method. This lithium variant of nitridophosphate is found to possess similar crystal structure (space group <i>P</i>2₁3) as its sodium analogue Na₃VP₃O₉N (<i>a</i> = 9.4507(1) Å) but with much smaller lattice parameter (<i>a</i> = 9.1237(1) Å). The crystal structure of Li₃VP₃O₉N was solved and refined using combined synchrotron X-ray and time-of-flight neutron powder diffraction data, allowing the three distinct lithium-ion sites to be identified. A lithium bond valence sum difference map calculation suggests the existence of isotropic three-dimensional lithium-ion-conducting pathways with a minimum valence threshold |ΔV| of 0.02. Li₃VP₃O₉N behaves as a promising reversible cathode material for rechargeable lithium-ion batteries with an average V³⁺/V⁴⁺ redox potential of 3.8 V (vs Li⁺/Li). Both cyclic voltammetry tests and chemical delithiation (using NO₂BF₄) indicate it is possible to partially remove the second lithium from the structure, though only at very high potentials (>4.9 V vs Li⁺/Li). It is also found that the unit cell volume of this compound expands instead of shrinking upon lithium removal, a rare phenomenon for polyanion-based cathodes. This abnormal volume expansion is found to be associated with the drastic expansion of the Li1­(O1)₃N tetrahedral site after removing lithium from this site

Li₃VP₃O₉N as a Multielectron Redox Cathode for Li-Ion Battery

Li₃VP₃O₉N was for the first time synthesized from its sodium analogue Na₃VP₃O₉N using a solid–solid Li⁺/Na⁺ ion-exchange method. This lithium variant of nitridophosphate is found to possess similar crystal structure (space group <i>P</i>2₁3) as its sodium analogue Na₃VP₃O₉N (<i>a</i> = 9.4507(1) Å) but with much smaller lattice parameter (<i>a</i> = 9.1237(1) Å). The crystal structure of Li₃VP₃O₉N was solved and refined using combined synchrotron X-ray and time-of-flight neutron powder diffraction data, allowing the three distinct lithium-ion sites to be identified. A lithium bond valence sum difference map calculation suggests the existence of isotropic three-dimensional lithium-ion-conducting pathways with a minimum valence threshold |ΔV| of 0.02. Li₃VP₃O₉N behaves as a promising reversible cathode material for rechargeable lithium-ion batteries with an average V³⁺/V⁴⁺ redox potential of 3.8 V (vs Li⁺/Li). Both cyclic voltammetry tests and chemical delithiation (using NO₂BF₄) indicate it is possible to partially remove the second lithium from the structure, though only at very high potentials (>4.9 V vs Li⁺/Li). It is also found that the unit cell volume of this compound expands instead of shrinking upon lithium removal, a rare phenomenon for polyanion-based cathodes. This abnormal volume expansion is found to be associated with the drastic expansion of the Li1­(O1)₃N tetrahedral site after removing lithium from this site

Li₃VP₃O₉N as a Multielectron Redox Cathode for Li-Ion Battery

Li₃VP₃O₉N was for the first time synthesized from its sodium analogue Na₃VP₃O₉N using a solid–solid Li⁺/Na⁺ ion-exchange method. This lithium variant of nitridophosphate is found to possess similar crystal structure (space group <i>P</i>2₁3) as its sodium analogue Na₃VP₃O₉N (<i>a</i> = 9.4507(1) Å) but with much smaller lattice parameter (<i>a</i> = 9.1237(1) Å). The crystal structure of Li₃VP₃O₉N was solved and refined using combined synchrotron X-ray and time-of-flight neutron powder diffraction data, allowing the three distinct lithium-ion sites to be identified. A lithium bond valence sum difference map calculation suggests the existence of isotropic three-dimensional lithium-ion-conducting pathways with a minimum valence threshold |ΔV| of 0.02. Li₃VP₃O₉N behaves as a promising reversible cathode material for rechargeable lithium-ion batteries with an average V³⁺/V⁴⁺ redox potential of 3.8 V (vs Li⁺/Li). Both cyclic voltammetry tests and chemical delithiation (using NO₂BF₄) indicate it is possible to partially remove the second lithium from the structure, though only at very high potentials (>4.9 V vs Li⁺/Li). It is also found that the unit cell volume of this compound expands instead of shrinking upon lithium removal, a rare phenomenon for polyanion-based cathodes. This abnormal volume expansion is found to be associated with the drastic expansion of the Li1­(O1)₃N tetrahedral site after removing lithium from this site

Additional file 1 of Trends of underweight, overweight, and obesity among older adults in China from 2008 to 2018: a national observational survey

Supplementary Material

Nanoscale Ni/Mn Ordering in the High Voltage Spinel Cathode LiNi_0.5Mn_1.5O₄

Nanoscale Ni/Mn Ordering in the High Voltage Spinel Cathode LiNi_0.5Mn_1.5O<sub>4</sub

Data_Sheet_1_Acceptance of the COVID-19 vaccine booster dose and associated factors among the elderly in China based on the health belief model (HBM): A national cross-sectional study.docx

BackgroundThe reluctance of individuals to obtain solid vaccine-induced immunity represents a fundamental challenge to containing the spread of SARS-CoV-2, including its highly mutated variants. We aimed to assess vaccination acceptance and associated factors for the COVID-19 vaccine booster dose among elderly people (≥60 years old) in China, providing a theoretical and practical reference for universal vaccination policy.MethodsA national anonymous survey was conducted in mainland China from May 25 to June 8, 2022, using a stratified random sampling method. Individuals 60 years of age and above were the target population. A chi-squared test and Cochran-Armitage test for trend were used to compare and examine vaccine acceptance rates by characteristics. Via a backward stepwise method, multivariable logistic regression models were established to assess factors associated with booster dose acceptance. Two-sided P ResultsOf 3,321 eligible participants, 82.8% (95% CI: 81.5–84.1%) were willing to receive COVID-19 vaccine booster shots. Concerns about contraindications (38.3%), vaccine safety (32.0%), and limited movement (28.0%) were the main reasons for vaccine hesitancy. Nearly one-third still believed that the booster dose was unnecessary after receiving the initial vaccination. Older adults with a low level of perceived barriers (aOR = 1.86, 95% CI, 1.03–3.38), a high level of perceived benefit (aOR = 2.31, 95% CI, 1.38–3.87), and higher cues to action (moderate, aOR = 2.22, 95% CI, 1.39–3.56; high, aOR = 5.46, 95% CI: 3.44–8.67) were more likely to accept the booster dose. Other major factors affecting the booster dose acceptance rate were occupation, time spent on social media, vaccination history, and a high knowledge score for COVID-19 and vaccines. In addition, for those over 70 years of age, rising awareness of susceptibility could be a better gateway for improving their willingness to get vaccinated.ConclusionsA total of 82.8% of recruited older adults were willing to receive the booster dose. Acceptance behaviors were closely related to occupation, time spent on social media, vaccination history, knowledge factors, perception of barriers, and benefit, as well as action cues. Targeted public health measures are a priority for improving the vaccination coverage of valid immunity among the elderly population, not only to prevent infection and poor prognosis caused by emerging variants but also to reduce the huge disease and economic burden caused by the long-term sequelae after SARS-CoV-2 infection.</p

Additional file 1 of Associations among socioeconomic status, multimorbidity of non-communicable diseases, and the risk of household catastrophic health expenditure in China: a population-based cohort study

Supplementary Material

Table_1_Prevalence of induced abortion among Chinese women aged 18–49 years: Findings from three cross-sectional studies.DOCX

There are few latest researches about induced abortion in China. We aimed to evaluate the prevalence of induced abortion and the related factors, thereby helping make targeted policies and measures to promote women's health. Three comparable cross-sectional surveys among Chinese women aged 18–49 years were performed in 2016, 2017, and 2021. A total of 14,573 eligible respondents were included in the study. 16.70% (95%CI 16.10%-17.31%) of respondents self-reported having experienced induced abortion, while 6.88% (95%CI 6.46%-7.29%) self-reported repeat induced abortion. Age range of 25–49 years (aOR 2.27–6.31, all P<0.05), living in western (aOR 1.72, 95%CI 1.50–1.98) and central (aOR 1.36, 95%CI 1.21–1.52) regions, having children (aOR 2.85, 95%CI 2.35–3.46) were associated with higher prevalence of induced abortion. Moreover, age range of 25–49 years, living in western and central regions, having children were also related to higher prevalence of repeat induced abortion (aOR 1.67–11.52, all P<0.05). Conversely, educational level of college or higher, household annual income over 80,000 Chinese yuan were associated with lower prevalence of induced abortion and repeat induced abortion (aOR 0.52–0.80, all P<0.05). Induced abortion remains noticeable in China. Sustained efforts are required to reduce unintentional pregnancy, improve reproductive health and post-abortion care services, and promote women's health.</p

Avian metapneumovirus subgroup C induces autophagy through the ATF6 UPR pathway

<p>An increasing number of studies have demonstrated that macroautophagy/autophagy plays an important role in the infectious processes of diverse pathogens. However, it remains unknown whether autophagy is induced in avian metapneumovirus (aMPV)-infected host cells, and, if so, how this occurs. Here, we report that aMPV subgroup C (aMPV/C) induces autophagy in cultured cells. We demonstrated this relationship by detecting classical autophagic features, including the formation of autophagsomes, the presence of GFP-LC3 puncta and the conversation of LC3-I into LC3-II. Also, we used pharmacological regulators and <i>siRNAs</i> targeting <i>ATG7</i> or <i>LC3</i> to examine the role of autophagy in aMPV/C replication. The results showed that autophagy is required for efficient replication of aMPV/C. Moreover, infection with aMPV/C promotes autophagosome maturation and induces a complete autophagic process. Finally, the ATF6 pathway, of which one component is the unfolded protein response (UPR), becomes activated in aMPV/C-infected cells. Knockdown of <i>ATF6</i> inhibited aMPV/C-induced autophagy and viral replication. Collectively, these results not only show that autophagy promotes aMPV/C replication in the cultured cells, but also reveal that the molecular mechanisms underlying aMPV/C-induced autophagy depends on regulation of the ER stress-related UPR pathway.</p