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Silicon (Si) is regarded as the most potential anode material for next‐generation lithium‐ion batteries (LIBs). However, huge volume expansion hinders its commercial application. Here, a yolk‐shell structural nitrogen‐doped carbon coated Si@SiO2 is prepared by SiO2 template and HF etching method. The as‐prepared composite exhibits superior cycling stability with a high reversible capacity of 577 mA...
TiNb2O7, as a promising alternative of Li4Ti5O12, exhibits giant potential as low‐temperature anode due to its higher theoretical capacity and comparable structural stability. However, the sluggish electronic conductivity still remains a challenge. Herein, bulk modification of Cu+ doping in porous TiNb2O7 microsphere is proposed via a simple one‐step solvothermal method with subsequent calcination...
Multidrug Delivery Microrobots
Dong Sun and co‐workers fabricate the multidrug delivery microrobot by a step‐by‐step 3D printing method using different biodegradable materials. It includes three components: skeleton, head, and body. The skeleton can respond to magnetic fields for microrobot actuation and drug‐targeted delivery. The drugs are separately stored in the head and body to enhance the synergistic...
The compact sulfur cathodes with high sulfur content and high sulfur loading are crucial to promise high energy density of lithium–sulfur (Li–S) batteries. However, some daunting problems, such as low sulfur utilization efficiency, serious polysulfides shuttling, and poor rate performance, are usually accompanied during practical deployment. The sulfur hosts play key roles. Herein, the carbon‐free...
Multidrug combination therapy provides an effective strategy for malignant tumor treatment. This paper presents the development of a biodegradable microrobot for on‐demand multidrug delivery. By combining magnetic targeting transportation with tumor therapy, it is hypothesized that loading multiple drugs on different regions of a single magnetic microrobot can enhance a synergistic effect for cancer...
Conventional two‐dimensional electron gas (2DEG) typically occurs at the interface of semiconductor heterostructures and noble metal surfaces, but it is scarcely observed in individual 2D semiconductors. In this study, few‐layer gallium selenide (GaSe) grown on highly ordered pyrolytic graphite (HOPG) is demonstrated using scanning tunneling microscopy and spectroscopy (STM/STS), revealing that the...