Transition Metal Oxide Electrode Materials for Supercapacitors: A Review of Recent Developments.

In the past decades, the energy consumption of nonrenewable fossil fuels has been increasing, which severely threatens human life. Thus, it is very urgent to develop renewable and reliable energy storage devices with features of environmental harmlessness and low cost. High power density, excellent cycle stability, and a fast charge/discharge process make supercapacitors a promising energy device.

Effect of BaF Variation on Spectroscopic Properties of Tm Doped Gallium Tellurite Glasses for Efficient 2.0 μm Laser.

The effects of substitution of BaF for BaO on physical properties and 1. 8 μm emission have been systematically investigated to improve spectroscopic properties in Tm doped gallium tellurite glasses for efficient 2.0 μm fiber laser.

Advances in Perovskite Light-Emitting Diodes Possessing Improved Lifetime.

Recently, perovskite light-emitting diodes (PeLEDs) are seeing an increasing academic and industrial interest with a potential for a broad range of technologies including display, lighting, and signaling. The maximum external quantum efficiency of PeLEDs can overtake 20% nowadays, however, the lifetime of PeLEDs is still far from the demand of practical applications. In this review, state-of-the-art concepts to improve the lifetime of PeLEDs are comprehensively summarized from the perspective of the design of perovskite emitting materials, the innovation of device engineering, the manipulation of optical effects, and the introduction of advanced encapsulations.

Community-weighted mean of leaf traits and divergence of wood traits predict aboveground biomass in secondary subtropical forests.

Subtropical forests are globally important in providing ecological goods and services, but it is not clear whether functional diversity and composition can predict aboveground biomass in such forests. We hypothesized that high aboveground biomass is associated with high functional divergence (FDvar, i.e.