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A front surface gradient of the absorber valence band can effectively reduce the open‐circuit voltage (VOC) loss of perovskite solar cells by suppressing the minority carrier concentration near the front surface. However, the existing method is limited to the one‐step fabrication process, resulting in underachieved photon harvesting and power conversion efficiency (PCE). To solve the problem, ZnCd‐based...
Exploiting clean energy is essential for sustainable development and sunlight‐driven photocatalytic water splitting represents one of the most promising approaches toward this goal. Metal‐organic frameworks (MOFs) are competent photocatalysts owing to their tailorable functionality, well‐defined structure, and high porosity. Yet, the introduction of the unambiguous metal‐centered active site into...
Silicon is an excellent candidate for the next generation of ultra‐high performance anode materials, with the rapid iteration of the lithium‐ion battery industry. High‐quality silicon sources are the cornerstone of the development of silicon anodes, and silicon cutting waste (SCW) is one of them while still faces the problems of poor performance and unclear structure‐activity relationship. Herein,...
Atomically dispersed iron immobilized on nitrogen‐doped carbon catalyst has attracted enormous attention for CO2 electroreduction, but still suffers from low current density and poor selectivity. Herein, atomically dispersed FeN5 active sites supported on defective N‐doped carbon successfully formed by a multistep thermal treatment strategy with the aid of dicyandiamide are reported. This dual‐functional...
Aqueous Zn metal batteries (AZMBs) have been considered as a promising alternative to the existing Li‐ion batteries. Nevertheless, the large‐scale application of the AZMBs is restricted by the dendrite formation and side reactions within the Zn metal anodes (ZMAs) during cycling. Herein, an atomically dispersed Cu in leaf‐like Zn‐coordinated zeolitic imidazolate framework (ZIF‐L) nanoflakes on Ti...
Aqueous Zn batteries (AZBs) have attracted extensive attention due to good safety, cost‐effectiveness, and environmental benignity. However, the sluggish kinetics of divalent zinc ion and the growth of Zn dendrites severely deteriorate the cycling stability and specific capacity. The authors demonstrate modulation of the interfacial redox process of zinc via the dynamic coordination chemistry of phytic...
In Situ Crystallization
In article number 2107452, Song Chen, Yu Chen, and co‐workers report a strategy for in‐situ crystallization of CsPbBr3 nanocrystals within silica nanospheres by a carefully designed, multistep, high‐temperature treatment. The image presents the well‐protected CsPbBr3 nanocrystals with excellent thermal stability, referencing the Chinese traditional story of “Bagua furnace alchemy...
Although all‐inorganic perovskite materials present multiple fascinating optical properties, their poor stability undermines their potential application in the field of multi‐color display. Herein, spatially confined CsPbBr3 nanocrystals are in situ crystallized within uniform mesoporous SiO2 nanospheres (MSNs) to regulate their size distribution, passivate their surface defects, shield them from...
Detrimental lithium polysulfide (LiPS) shuttle effects and sluggish electrochemical conversion kinetics in lithium‐sulfur (Li‐S) batteries severely hinder their practical application. Separator modification has been extensively investigated as an effective strategy to address above issues. Nevertheless, in the case of functional separators, how to effectively block the LiPSs from diffusion while enabling...
Engineering intriguing electrode with exceptional kinetics behaviors is imperative for boosting sodium storage systems. Herein, the uniform nanoframes are threaded by the interwoven carbon nanotube (CNT) conductive network to form an ingenious beads‐on‐a‐string structured NiFePBA nanoframe/CNT (NFPB‐NF/CNT) cathode and the corresponding derivative NiFeSe nanoframe/CNT (NFS‐NF/CNT) anode. NFPB‐NF/CNT...
Tin‐based compounds have received much attention as anode materials for lithium/sodium ion batteries owing to their high theoretical capacity. However, the huge volume change usually leads to the pulverization of electrode, giving rise to a poor cycle performance, which have severely hampered their practical application. Herein, highly durable yolk–shell SnSe2 nanospheres (SnSe2@SeC) are prepared...
The polysulfide shuttle effect and sluggish reaction kinetics hamper the practical applications of lithium–sulfur (Li–S) batteries. Incorporating a functional interlayer to trapping and binding polysulfides has been found effective to block polysulfide migration. Furthermore, surface chemistry at soluble polysulfides/electrolyte interface is a crucial step for Li–S battery in which stable cycling...
Constructing unique mesoporous 2D Si nanostructures to shorten the lithium‐ion diffusion pathway, facilitate interfacial charge transfer, and enlarge the electrode–electrolyte interface offers exciting opportunities in future high‐performance lithium‐ion batteries. However, simultaneous realization of 2D and mesoporous structures for Si material is quite difficult due to its non‐van der Waals structure...
In article number 1703361, Zhuo Chen, Chuanbao Cao, Min Xia, and co‐workers report that 2D ultrathin mesoporous silicon (Si) nanosheets with a homogeneous carbon layer achieve remarkably enhanced lithium‐storage properties, cycle stability and rate capability, which can be attributed to the coexistence of both the homogeneous carbon layer, and 2D mesoporous nanostructures in the Si materials to shorten...
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