Aqueous Dual-Electrolyte Full-Cell System for Improving Energy Density of Sodium-Ion Batteries.

Sodium-ion batteries (SIBs) are regarded as one of the most promising candidates for next-generation energy storage devices and have been gradually grasping market share for their low cost and similar reaction mechanism and production process as compared to lithium-ion batteries. However, the low energy density of SIBs restricts their practical applications. For example, regular full cells of a Prussian blue cathode and NASICON anode have only a low discharge capacity (about 77 mA h/g at 1 C).

Defect-Rich Amorphous Iron-Based Oxide/Graphene Hybrid-Modified Separator toward the Efficient Capture and Catalysis of Polysulfides.

The sluggish sulfur reduction reaction, severe shuttle effect, and poor conductivity of sulfur species are three main problems in lithium-sulfur (Li-S) batteries. Functional materials with a strong affinity and catalytic effect toward polysulfides play a key role in addressing these issues. Herein, we report a defect-rich amorphous a-FeO/GO material with a nanocube-interlocked structure as an adsorber as well as an electrocatalyst for the Li-S battery.

Structure Recovery and Recycling of Used LiCoO Cathode Material.

A large number of lithium batteries have been retiring from the market of energy storage. Thus, recycling of the used electrode materials is becoming urgent. In this study, an industrial machinery processing was used to recover the crystal structure of the waste LiCoO materials with the combination of small-scale equipment repair technology.

Regulate Phosphorus Configuration in High P-Doped Hard Carbon as a Superanode for Sodium Storage.

Heteroatom-doped hard carbon is a popular method to optimize the electrochemical performance of anode electrodes for sodium-ion batteries. Herein, phosphorus-doped hollow carbon nanorods (P-HCNs) are obtained by a one-step synthesis with a high phosphorus content of 7.5 atom %.