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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...
Aqueous zinc‐ion batteries hold attractive potential for large‐scale energy storage devices owing to their prominent electrochemical performance and high security. Nevertheless, the applications of aqueous electrolytes have generated various challenges, including uncontrolled dendrite growth and parasitic reactions, thereby deteriorating the Zn anode's stability. Herein, inspired by the superior affinity...
Aqueous zinc‐ion batteries (AZIBs) have drawn the attention of numerous researchers owing to their high safety and cost‐effectiveness. However, the dendrite growth and side reactions of the zinc (Zn) anodes limit their further practical applications. Herein, a porous amorphous silicon nitride protective layer with high zincophobicity is constructed on the Zn anode surface, which can guide the uniform...
Aqueous zinc‐ion battery is regarded as one of the promising devices for large‐scale energy storage systems owing to its high safety, cost‐effectiveness, and competitive electrochemical properties. However, the dendrite growth on zinc metal anodes dramatically hinders its further practical applications, and the internal mechanism of dendrite evolution is still unclear. The introduction of a protective...
Heterostructures play an irreplaceable role in high‐performance optoelectronic devices. However, the preparation of robust perovskite heterostructures is challenging due to spontaneous interdiffusion of halogen anions. Herein, a vapor‐phase anion exchange method universally suitable for the preparation of robust 2D Ruddlesden–Popper perovskite (RPP) heterostructures is developed. A variety of heterostructures...
The all‐inorganic lead‐free Cu‐based halide perovskites represented by the Cs−Cu−I system, have sparked extensive interest recently due to their impressive photophysical characteristics. However, successive works on their potential application in light emission diodes and photodetectors rely on tiny polycrystals, in which the grain boundaries and defects may lead to the performance degradation of...
UV Photodetectors
In article number 2201715, Qi Zhang and co‐workers propose the epitaxial growth of 2D all‐inorganic lead‐free Cs3Cu2I5 perovskites down to a thickness of 10 nm. The radiative transition of self‐trapped excitons is responsible for a strong blue emission, associated with a large Stocks shift and microsecond decay time. Their appealing UV sensitivity endows the development of green...
Aqueous zinc–ion batteries typically suffer from sluggish interfacial reaction kinetics and drastic cathode dissolution owing to the desolvation process of hydrated Zn2+ and continual adsorption/desorption behavior of water molecules, respectively. To address these obstacles, a bio‐inspired approach, which exploits the moderate metabolic energy of cell systems and the amphiphilic nature of plasma...
Energy Devices
In article number 2107514, Yaping Zeng, Zhiyong Wang, Baihua Qu, and co‐workers use heterostructure engineering to boost the fast sodium ion transportation, combined with embedding the heterojunctions into the nitrogen‐doped porous carbon fibers (CNFs), the obtained Sb‐Fe‐S@CNFs composite delivers a desirable reversible capacity and exhibits an ultra‐long high rate cycle life for 16...
Heterointerface engineering with multiple electroactive and inactive supporting components is considered an efficient approach to enhance electrochemical performance for sodium‐ion batteries (SIBs). Nevertheless, it is still a challenge to rationally design heterointerface engineering and understand the synergistic effect reaction mechanisms. In this paper, the two‐phase heterointerface engineering...
Polymer‐based quasi‐solid‐state electrolyte (QSE) is an effective means to solve the safety problem of lithium (Li) metal batteries, and stable solid‐electrolyte‐interface (SEI) layers between electrolyte and anode/cathode are highly required for their long‐term stability. Herein, it is demonstrated that a silicon‐doped polyether functions as a multifunctional unit, which can induce the formation...
Photothermal Therapy
In article number 2104585, Fubing Wang, Xiangheng Xiao, and co‐workers use cancer cell homologous exosome vesicles as a carrier, and with the help of its homing effect, the photothermal nanomedicine can be accurately delivered to the tumor area for aggregation. Nanomedicine then enters into the cell through its strong penetration effect. The precise positioning of external laser...
Nanocancer medicine, such as photothermal therapy (PTT), as a promising way to solve cancer without side effects, faces a huge biological barrier during the circulation of nanoparticles in the body, including nanobiological interactions in the blood, isolation of nanoparticles in the macrophage system, tumor spillover effect, and especially uneven intratumoral distribution of nanoparticles, which...
Plant nanoelectronics aims to achieve specific functions by selecting suitable nanomaterials to connect or implant into plants. In this work, a new cyclic‐spraying method is developed to attain controllable growth of surface‐attached metal‐organic framework (SURMOF) coatings on various complex substrates, including cotton, silk, and plant leaves. The covalent bonds formed between the SURMOF layer...
Owing to the urgent need for electrochemical analysis and sensing of trace target molecules in various fields such as medical diagnosis, agriculture and food safety, and environmental monitoring, signal amplification is key to promoting analysis and sensing performance. The nanoconfinement effect, derived from nanoconfined spaces and interfaces with sizes approaching those of target molecules, has...
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