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Bio‐electrochemical conversion of anthropogenic CO2 into value‐added products using cost‐effective metal‐free catalysts represents a promising strategy for sustainable fuel production. Herein, N‐doped carbon nanosheets synthesized via pyrolysis of the zeolitic‐imidazolate framework (ZIF) are developed for constructing efficient biohybrids to facilitate CO2‐to‐CH4 conversion. The microbial enrichment...
Na‐based layered transition metal oxides with an O3‐type structure are considered promising cathodes for sodium‐ion batteries. However, rapid capacity fading, and poor rate performance caused by serious structural changes and interfacial degradation hamper their use. In this study, a NaPO3 surface modified O3‐type layered NaNi1/3Fe1/3Mn1/3O2 cathode is synthesized, with improved high‐voltage stability...
All‐solid‐state lithium‐ion batteries (ASSLBs) employing silicon (Si) anode and sulfide electrolyte attract much attention, since they can achieve both high energy density and safety. For large‐scale application, sheet‐type Si anode matching sulfide based ASSLBs is preferred. Here, a LiAlO2 layer coated Si (Si@LiAlO2) is reported for sheet‐type electrode. This electrode employs conventional slurry...
Lithium‐Ion Batteries
The electrochemical performance of SiOx/C anode is affected by the match of their working potentials. In article number 2302644, Shang Wang, Yanhong Tian, Andreu Cabot, Lijie Ci, and co‐workers demonstrate that a bidirectional diffusion behavior exists in SiOx/graphite anode due to the working potential mismatch, deteriorating the cycle life of the electrode. This mismatch can...
Silicon oxide (SiOx), inheriting the high‐capacity characteristic of silicon‐based materials but possessing superior cycling stability, is a promising anode material for next‐generation Li‐ion batteries. SiOx is typically applied in combination with graphite (Gr), but the limited cycling durability of the SiOx/Gr composites curtails large‐scale applications. In this work, this limited durability is...
Lithium‐Ion Batteries
In article number 2300759, Shang Wang, Hongbin Liu, Yanhong Tian, Lijie Ci, and co‐workers report on the effect of carbon microstructure on the lithium‐ion storage behaviors of SiOx/C anode. The authors study the disorder‐of‐carbon dependent Li‐ion storage behavior in SiOx/C anode through a series of quantitative calculations and in situ X‐ray diffraction (XRD) characterizations...
SiOx anode has a more durable cycle life than Si, being considered competitive to replace the conventional graphite. SiOx usually serves as composites with carbon to achieve more extended cycle life. However, the carbon microstructure dependent Li‐ion storage behaviors in SiOx/C anode have received insufficient attention. Herein, this work demonstrates that the disorder of carbon can determine the...
Aliovalent doping is widely adopted to tune the electronic structure of transition‐metal oxides for design of low‐cost, active electrocatalysts. Here, using single‐crystalline thin films as model electrocatalysts, the structure‐activity relationship of Fe states doping in perovskite LaNiO3 for oxygen evolution reaction (OER) is studied. Fe4+ state is found to be crucial for enhancing the OER activity...
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