Publications by authors named "Yinyin Zheng"
PANI-Coated VO Nanobelts with Core-Shell Architecture for Flexible All-Solid-State Supercapacitor.
Micromachines (Basel)
September 2023
Article Synopsis
- VO is a promising pseudocapacitor material due to its mixed valence states, but challenges like high internal resistance and low energy density limit its use.
- The study developed a two-dimensional PANI@VO nanobelt with a core-shell structure, resulting in improved conductivity and specific capacitance, as well as excellent cycling performance after multiple charge-discharge cycles.
- The innovative design led to a flexible all-solid-state supercapacitor, achieving impressive energy and power density, and successfully powering a hygrothermograph, showcasing its potential for portable and wearable devices.
Article Synopsis
- The rise of the Internet of Things has led to an increasing demand for smaller, more flexible supercapacitors, and utilizing screen printing technology presents promising opportunities for their production.
- A novel method to create hierarchical VO with a rod-like shape was developed, allowing for the formulation of screen-printable inks that show strong performance characteristics, including high specific capacitance and excellent cycle stability.
- The resulting flexible symmetric supercapacitor demonstrated impressive energy storage capabilities, voltage stability, and durability, indicating its potential for practical applications in power supply.
Aluminum is a promising anode material for lithium-ion batteries owing to its high theoretical capacity, excellent conductivity, and natural abundance. An anomalous size effect was observed for micron-sized aluminum powder electrodes in this work. Experimental and theoretical investigations reveal that the insulating oxide surface layer is the underlying cause, which leads to poor electrical conductivity and limited capacity utilization when the particle is too small.
View Article and Find Full Text PDFThe Continued Use of Social Commerce Platforms and Psychological Anxiety-The Roles of Influencers, Informational Incentives and FoMO.
Int J Environ Res Public Health
November 2021
Why does the continued use of social commerce platforms fail to promote consumer wellbeing? This study explores the roles of influencers, informational incentives and fear of missing out (FoMO) in the relationships between social commerce platform use and consumer mental health. Data were obtained through questionnaires, as well as constructing a research model. Statistical analysis and path analysis of the structural equation model were performed by the software IBM SPSS and AMOS, and the following results were obtained.
View Article and Find Full Text PDFBackground: To assess the usefulness of the neutrophil/lymphocyte ratio (NLR), a marker of inflammation and/or stress, for predicting weaning failure in patients receiving invasive mechanical ventilation (IMV), compared to levels of leukocytes and C-reactive protein (CRP).
Methods: This observational prospective cohort study was conducted from July 2013 to December 2016 in an intensive care unit in China, enrolling 269 consecutive patients receiving IMV. Patients underwent a spontaneous breathing trial (SBT) if they were ready to wean, and underwent extubation if they passed the SBT.