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Perovskites
In article number 2307960, Xiao Wang, Longbin Qiu, and co‐workers developed an ultrahigh humidity treatment strategy to facilitate the effective diffusion of formamidinium iodide from the top surface to the buried bottom interface on the sequential vapor‐deposited bilayer structure. High‐efficiency and stable perovskite solar cells deposited by a sequential vapor deposition process with...
The quality of two‐step processed perovskites is significantly influenced by the distribution of organic amine salts. Especially, modulating the distribution of organic amine salts remains a grand challenge for sequential vapor‐deposited perovskites due to the blocking effect of bottom compact PbI2. Herein, an ultrahigh humidity treatment strategy is developed to facilitate the diffusion of formamidinium...
The Li‐CO2 battery has great potential for both CO2 utilization and energy storage, but its practical application is limited by low energy efficiency and short cycle life. Efficient cathode catalysts are needed to address this issue. Herein, this work reports on molecularly dispersed electrocatalysts (MDEs) of nickel phthalocyanine (NiPc) anchored on carbon nanotubes (CNTs) as the cathode catalyst...
Efficient Perovskite Solar Modules
In article number 2301110, Sisi He, Longbin Qiu, and co‐workers design a controllable release and deposition of Ni2+ by adding amino‐alcohol ligands, which enhance the anti‐sedimentation of the precursor solution during chemical bath deposition and the uniformity of the deposited hole transport layer with large area. The authors fabricate highly reproducible and...
A scalable and low‐cost deposition of high‐quality charge transport layers and photoactive perovskite layers are the grand challenges for large‐area and efficient perovskite solar modules and tandem cells. An inverted structure with an inorganic hole transport layer is expected for long‐term stability. Among various hole transport materials, nickel oxide has been investigated for highly efficient...
Nanozyme‐based chemodynamic therapy (CDT) for fighting bacterial infections faces several major obstacles including low hydrogen peroxide (H2O2) level, over‐expressed glutathione (GSH) in infected sites, and inevitable damage to healthy tissue with abundant nonlocalized nanozymes. Herein, a smart ultrasmall Fe3O4‐decorated polydopamine (PDA/Fe3O4) hybrid nanozyme is demonstrated that continuously...
Volumetric performance is of great importance in today's energy storage devices, and is used to evaluate their competitiveness in the markets of miniaturized electronic devices and space‐constrained electric vehicles. Supercapacitors suffer from a low volumetric energy density in spite of their high power and long cycle life because of their use of porous but low‐density carbons. This review considers...
Molybdenum phosphide (MoP) is regarded as one of the most promising alternatives to noble‐metal based electrocatalysts for efficient hydrogen evolution reaction (HER) due to its similar d‐band electronic structure to noble metals and tunable features associated with phase and composition. However, it still remains a great challenge to construct MoP electrocatalysts with abundant active sites that...
Heterostructured Electrocatalysts
In article number 2102413, Baocang Liu, Rui Gao, Jun Zhang, Bin Liu, and co‐workers report the construction of a novel heterostructured electrocatalyst of CePO4/MoP/carbon cloth (CC) constituting MoP nanobelts with surface‐decorated CePO4 nanoparticles on CC for hydrogen evolution reaction (HER). The CePO4/MoP/CC electrocatalyst exhibits a low overpotential of 48...
A robust polyaniline‐assisted strategy is developed to construct a self‐supported electrode constituting a nitrogen, phosphorus, sulfur tri‐doped thin graphitic carbon layer encapsulated sulfur‐doped molybdenum phosphide nanosheet array (NPSCL@S‐MoP NSs/CC) with accessible nanopores, desirable chemical compositions, and stable composite structure for efficient hydrogen evolution reaction (HER). The...
Rechargeable aqueous zinc (Zn) ion‐based energy storage systems have been reviving recently because of their low cost and high safety merits; however, they still suffer from the problems of corrosion and dendrite growth on Zn metal anodes that cause gas generation and early battery failure. Unfortunately, the corrosion problem has not received sufficient attention until now. Here, it is pioneeringly...
Room‐temperature sodium‐sulfur (RT/Na‐S) batteries are considered among the most promising next‐generation energy storage and conversion systems because of the earth‐abundant reserves of sodium and sulfur. These batteries also possess the advantages of high theoretical gravimetric capacity, high energy density, and low cost. Herein, highly uniform Fe3+/polyacrylamide nanospheres (FPNs) are fabricated...
In order to fabricate high performance fiber pseudocapacitors, the trade‐off between high mass loading and high utilization efficiency of pseudocapacitive materials should be carefully addressed. Here, a solution that is to construct a carbon‐based versatile scaffold is reported for loading pseudocapacitive materials on carbonaceous fibers. The scaffold can be easily built by conformally coating commercial...
Natural killer (NK) cells are a key component of the innate immune system as they can attack cancer cells without prior sensitization. However, due to lack of cell‐specific receptors, NK cells are not innately able to perform targeted cancer immunotherapy. Aptamers are short single‐stranded oligonucleotides that specifically recognize their targets with high affinity in a similar manner to antibodies...
Drinking water treatment processes (DWTPs) impact pathogen colonization and microbial communities in finished water; however, their efficacies against opportunistic pathogens are not fully understood. In this study, the effects of treatment steps on the removal of Legionella spp., Legionella pneumophila, nontuberculous mycobacteria, Mycobacterium avium, and two amoeba hosts (Vermamoeba vermiformis...
Compared with other flexible energy‐storage devices, the design and construction of the compressible energy‐storage devices face more difficulty because they must accommodate large strain and shape deformations. In the present work, CoNi2S4 nanoparticles/3D porous carbon nanotube (CNT) sponge cathode with highly compressible property and excellent capacitance is prepared by electrodepositing CoNi2...
Nanostructured carbon materials play essential roles in electrochemical energy storage devices. However, scalable production of high surface area carbon with a cost‐effective process while controlling the morphology is challenging. Herein, a one‐step procedure to produce carbon sheets with very high specific surface area up to 3411 m2 g−1 by direct pyrolysis of dipotassium ethylene diamine tetraacetate...
Inorganic perovskites with special semiconducting properties and structures have attracted great attention and are regarded as next generation candidates for optoelectronic devices. Herein, using a physical vapor deposition process with a controlled excess of PbBr2, dual‐phase all‐inorganic perovskite composite CsPbBr3–CsPb2Br5 thin films are prepared as light‐harvesting layers and incorporated in...
A glutathione (GSH) activatable photosensitizer‐conjugated pseudopolyrotaxane nanocarrier is fabricated as a new photodynamic theranostic platform by Q. Jin, J. Ji, and co‐workers on page 6223. The nanocarriers exhibit a GSH activated fluorescence signal and phototoxicity for PDT (photodynamic therapy). After being internalized by cancer cells, the high concentration of GSH triggers the release and...
Photodynamic theranostics has recently been extensively explored as a promising approach for precise localization and therapy. Herein, glutathione (GSH) activatable photosensitizer (PS)‐conjugated pseudopolyrotaxane nanocarriers (α‐CD‐ss‐Ce6 NPs) are reported for enhanced photodynamic theranostics by taking advantage of the noncovalent interactions between α‐cyclodextrin (α‐CD) and poly(ethylene glycol)...
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