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Iron‐based perovskite air electrodes for protonic ceramic cells (PCCs) offer broad application prospects owing to their reasonable thermomechanical compatibility and steam tolerance. However, their insufficient electrocatalytic activity has considerably limited further development. Herein, oxygen‐vacancy‐rich BaFe0.6Ce0.2Sc0.2O3−δ (BFCS) perovskite is rationally designed by a facile Sc‐substitution...
Traditional surface‐enhanced Raman scattering (SERS) sensors rely heavily on the use of plasmonic noble metals, which have limitations due to their high cost and lack of physical and chemical stability. Hence, it is imperative to explore new materials as SERS platforms that can withstand high temperatures and harsh conditions. In this study, the SERS effect of molybdenum boride ceramic powders is...
FAPbI3 perovskites have garnered considerable interest owing to their outstanding thermal stability, along with near‐theoretical bandgap and efficiency. However, their inherent phase instability presents a substantial challenge to the long‐term stability of devices. Herein, this issue through a dual‐strategy of self‐assembly 3D/0D quasi‐core–shell structure is tackled as an internal encapsulation...
Stable plating/stripping of Zn metal anode remains a great challenge owing to uncontrollable dendrite growth and side reactions. Ion‐sieving separators is a unique and promising solution, that possess Zn2+ permeability and promote Zn2+ transport, can effectively alleviate the abovementioned problems. Ion‐sieving on glass fiber separator by deposition of oxygen‐deficient SiOx layer via active screen...
Structural damage of Ni‐rich layered oxide cathodes such as LiNi0.8Co0.1Mn0.1O2 (NCM811) and serious interfacial side reactions and physical contact failures with sulfide electrolytes (SEs) are the main obstacles restricting ≥4.6 V high‐voltage cyclability of all‐solid‐state lithium batteries (ASSLBs). To tackle this constraint, here, a modified NCM811 with Li3PO4 coating and B/P co‐doping using inexpensive...
Flexible perovskite solar cells (F‐PSCs) have emerged as promising alternatives to conventional silicon solar cells for applications in portable and wearable electronics. However, the mechanical stability of inherently brittle perovskite, due to residual lattice stress and ductile fracture formation, poses significant challenges to the long‐term photovoltaic performance and device lifetime. In this...
The damaged endometrium and the formation of fibrosis are key barriers to pregnancy and further lead to infertility. However, how to promote endometrium repair is always a challenge. Here, a bioactive injectable and self‐healing hydrogel is developed by physically combination of thiolated polyethylene (PEG), Cu2+ and cell‐free fat extract (CEFFE, CF) for endometrial regeneration and fertility. By...
The pinhole‐free and defect‐less perovskite film is crucial for achieving high efficiency and stable perovskite solar cells (PSCs), which can be prepared by widely used anti‐solvent crystallization strategies. However, the involvement of anti‐solvent requires precise control and inevitably brings toxicity in fabrication procedures, which limits its large‐scale industrial application. In this work,...
The lithium–oxygen (Li–O2) battery with high energy density of 3860 Wh kg−1 represents one of the most promising new secondary batteries for future electric vehicles and mobile electronic devices. However, slow oxygen reduction/oxygen evolution (ORR/OER) reaction efficiency and unstable cycling performance restrain the practical applications of the Li–O2 battery. Herein, Ru‐modified nitrogen‐doped...
Although enormous success has been obtained for dendritic cells (DCs)‐mediated antigen‐specific T cells anticancer immunotherapy in the clinic, it still faces major challenging problems: insufficient DCs in tumor tissue and low response rate for tumor cells lacking antigen expression, especially in low immunogenic tumors such as pancreatic cancer. Here, these challenges are tackled through tumor microenvironment...
Supported alloy catalysts play a pivotal role in many heterogeneous catalytic processes of socioeconomic and environmental importance. But the controlled synthesis of supported alloy nanoparticles with consistent composition and tight size distribution remains a challenging issue. Herein, a simple yet effective method for preparation of highly dispersed, homogeneously alloyed bimetallic nanoparticles...
2D materials, of which the carrier type and concentration are easily tuned, show tremendous superiority in electronic and optoelectronic applications. However, the achievements are still quite far away from practical applications. Much more effort should be made to further improve their performance. Here, p‐type MoSe2 is successfully achieved via substitutional doping of Ta atoms, which is confirmed...
The success of phototheranostics is hampered by some intrinsic defects, such as limited light penetration depth, heat resistance of tumor cells to photothermal therapy (PTT) induced by heat shock protein (HSP) and stress resistance against photodynamic therapy (PDT) caused by hypoxia microenvironment of tumor. Herein, a second near infrared (NIR‐II) light excitation phototheranostic nanomedicine has...
Polyethylene oxide (PEO) is one of the most widely used polymeric ion conductors which has the potential for a wide range of applications in energy storage. The enhancement of ionic conductivity of PEO‐based electrolytes is generally achieved by sacrificing the mechanical properties. Using layer‐by‐layer (LbL) self‐assembly with a nanoscale precision, mechanically strong and self‐healable PEO/polyacrylic...
Thin endometrium is a primary cause of failed embryo transfer, resulting in long‐term infertility and negative family outcomes. While hormonal treatments have greatly improved fertility results for some women, these responses remain unsatisfactory due to damage and infection of the complex endometrial microenvironment. In this study, a multifunctional microenvironment‐protected exosome‐hydrogel is...
In article number 2007235, Qianqian Zhu, Wenguo Cui, and co‐workers develop an exosome‐hydrogel through Ag+‐S dynamic coordination and fusion with adipose stem cell‐derived exosomes, yielding an injectable hydrogel with antibacterial activity that promotes neovascularization and endometrial tissue regeneration. This microenvironment‐protected exosome‐hydrogel system offers a convenient, safe and noninvasive...
In article number 2006434, Zhen Wang, Mahiar Max Hamedi, and co‐workers demonstrate that layer‐by‐layer self‐assembly enables unprecedented precision in designing and controlling the nanoscale architecture of battery electrodes. The technique is a powerful route for fabricating high‐performance lithium‐ion batteries, and allows new form factors such as compressible and 3D batteries.
Gaining control over the nanoscale assembly of different electrode components in energy storage systems can open the door for design and fabrication of new electrode and device architectures that are not currently feasible. This work presents aqueous layer‐by‐layer (LbL) self‐assembly as a route towards design and fabrication of advanced lithium‐ion batteries (LIBs) with unprecedented control over...
2D layered photodetectors have been widely researched for intriguing optoelectronic properties but their application fields are limited by the bandgap. Extending the detection waveband can significantly enrich functionalities and applications of photodetectors. For example, after breaking through bandgap limitation, extrinsic Si photodetectors are used for short‐wavelength infrared or even long‐wavelength...
The cover shows the extrinsic photoconduction induced Ge‐based polarization‐sensitive photodetector. The structure of the Ge‐based photodetector is shown in the upper left corner. The amplified crystal structure of GeSe with several Ge vacancies is shown in the middle. Additionally, the image of excess carriers being excited by a polarized light is shown in the lower right corner. In article number...
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