An interlayer spacing design approach for efficient sodium ion storage in N-doped MoS.

MoS in a graphene-like structure that possesses a large interlayer spacing is a promising anode material for sodium ion batteries (SIBs). However, its poor cycling stability and bad rate performance limit its wide application. In this work, we synthesized an N-doped rGO/MoS (ISE, interlayer spacing enlarged) composite based on an innovative strategy to serve as an anode material for SIBs.

Dilute Hybrid Electrolyte for Low-Temperature Aqueous Sodium-Ion Batteries.

A hybrid electrolyte based on low-concentration sodium nitrate with glycerol as an additive was proposed for aqueous sodium-ion batteries (ASIBs) towards low-temperature performance. Based on this dilute hybrid electrolyte and configured by bimetallic Prussian blue analogue (Ni ZnHCF) cathode and 3,4,9,10-perylenetetracarboxylic diimide (PTCDI) anode, the full cell demonstrated surprising cycle performance with a specific capacity of 60 mAh g (>800 cycles) and achieved prominent performance at low temperature. Glycerol effectively expanded the electrochemical stability window of the hybrid electrolyte to 2.

The key role of concentrated Zn(OTF) electrolyte in the performance of aqueous Zn-S batteries.

In this communication, the electrolyte chemistry in aqueous Zn-S batteries was illustrated systematically. Compared to Zn(AC) and ZnSO, Zn(OTF) electrolyte can achieve better electrochemical performance due to the impact of larger CFSO anions on the solvation shell structure of Zn. Moreover, a reversible capacity of 788 mA h g in concentrated Zn(OTF) electrolyte (3 M) is obtained and shows higher retention due to higher Zn-nucleation overpotential and slower corrosion reactions.

Boosting Lithium Storage of a Metal-Organic Framework via Zinc Doping.

Lithium-ion batteries (LIBs) as a predominant power source are widely used in large-scale energy storage fields. For the next-generation energy storage LIBs, it is primary to seek the high capacity and long lifespan electrode materials. Nickel and purified terephthalic acid-based MOF (Ni-PTA) with a series amounts of zinc dopant (0, 20, 50%) are successfully synthesized in this work and evaluated as anode materials for lithium-ion batteries.