Silicon is abundant in nature with high theoretical capacity (4200 mAh g-1), making it an ideal anode material for improving the energy density of dual-ion batteries (DIBs). However, its application in DIBs has been restricted by the large volume expansion problem (>300%). Rigid contacts between silicon and current collectors, commonly made with metal foils, lead to sign...

LIBs can hardly meet the urgent demand of large-scale energy storage due to the limited lithium and cobalt resources and their uneven distributions. Until now, the anode and electrolytes for potassium ion batteries (KIBs) are relatively mature, while the development of corresponding cathodes is slow. Since the size of K+ (1.38 Å) is much larger than Li+ (0.76 Å), large migrat...

Lithium ion batteries (LIBs) have been wide applied in portable electronics, electric vehicles, etc. Meanwhile, due to the limited resources of lithium and their uneven distributions, as well as the shortage of cobalt resources, LIBs can hardly meet the demand of large-scale applications. Due to the similarity between sodium and lithium and the rich abundance of sodium, sodium...

Conventional LIBs cathode materials contain oxides and polyanions. The former, e.g.,LiCoO2, exhibits transition-metal and oxygen-redox, contributing to high specific capacity, whereas the oxygen redox reaction is unstable, leading to gas releasing and structural collapsing, and further causing battery failure or serious safety issues. The later, e.g., LiFePO4, has much improved s...

In 2016, the team developed a new lithium-ion battery configuration with high efficiency and low cost, which used an integrated design of aluminum foil to replace the graphite anode and the Cu current collector of conventional LIBs, omitting conventional anode materials. Thus, dead weight and dead volume could be greatly reduced, further improving energy densities of this battery....

The development of sodium-ion batteries (SIBs) is hindered by the low working voltage, and poor rate and cycling performance. Although great efforts have been made, the application of SIBs is still a challenge. Our group has developed a multi-ion strategy for sodium-ion full batteries. In this design, expanded graphite and Sn foil were used as the cathode and anode, respecti...

Lithium ion batteries dominate the consumer electronics and electric vehicle markets due to their relatively high energy density, long cycle life, small memory effect, and low self-discharge. However, due to the low voltage platform of the graphite anode, lithium dendrites are easily formed during the battery cycle, increasing the risk of short circuit. Furthermore,  the org...

Calcium-ion batteries show great promise as novel energy storage devices benefiting from the high natural abundance, relatively low reduction potential close to lithium and bivalent feature of calcium. However, the development of calcium-ion batteries has been hindered by the irreversible plating/stripping of calcium anode at room temperature.Our group has developed a novel configu...