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Ti–Bi Nanosheets
In article number 2302253, Jing Xu, Xucai Yin, and co‐workers report novel titanium‐doped bismuth nanosheets (Ti–Bi NSs) for electrochemical carbon dioxide reduction. The prepared Ti–Bi NSs catalyst possesses the open and ordered ultrathin nanosheet structure, which could provide a large number of exposed active sites and a fast mass transport channel. Moreover, Ti doping is beneficial...
The electrochemical carbon dioxide reduction reaction (E‐CO2RR) to formate is a promising strategy for mitigating greenhouse gas emissions and addressing the global energy crisis. Developing low‐cost and environmentally friendly electrocatalysts with high selectivity and industrial current densities for formate production is an ideal but challenging goal in the field of electrocatalysis. Herein, novel...
Uncontrollable dendrite growth and sluggish ion‐transport kinetics are considered as the main obstacles for the further development of high‐performance aqueous zinc ion batteries (AZIBs). Here, a nature‐inspired separator (ZnHAP/BC) is developed to tackle these issues via the hybridization of the biomass‐derived bacterial cellulose (BC) network and nano‐hydroxyapatite particles (HAP). The as‐prepared...
Accurate detection of trace biomarkers in biological samples is a key task in diagnostic testing, but it remains challenging due to the high concentration of other physiologically relevant interferences. This work presents a new electrochemiluminescence (ECL) sensing device based on a bio‐inspired nanochannel membrane (NM) guarded with two differential gates. The recognition event at the aptamer gate...
Electrochemical Nc reduction has been regarded as one of the most promising approaches to producing ammonia under mild conditions, but there are remaining pressing challenges in improving the reaction rate and efficiency. Herein, an unconventional galvanic replacement reaction is reported to fabricate a unique hierarchical structure composed of Fe3O4‐CeO2 bimetallic nanotubes covered by Fe2O3 ultrathin...
Directly converting and storing abundant solar energy in next‐generation energy storage devices is of central importance to build a sustainable society. Herein, a new prototype of a light‐promoted rechargeable and flexible Li‐CO2 battery with a TiO2/carbon cloth (CC) cathode is reported for the direct utilization of solar energy to promote the kinetics of the carbon dioxide reduction reaction and...
Anodes involving conversion and alloying reaction mechanisms are attractive for potassium‐ion batteries (PIBs) due to their high theoretical capacities. However, serious volume change and metal aggregation upon potassiation/depotassiation usually cause poor electrochemical performance. Herein, few‐layered SnS2 nanosheets supported on reduced graphene oxide (SnS2@rGO) are fabricated and investigated...
3D all‐solid‐state thin film batteries (TFBs) are proposed as an attractive power solution for microelectronics. However, the challenge in fabricating self‐supported 3D cathodes constrains the progress in developing 3D TFBs. In this work, 3D LiMn2O4 (LMO) nanowall arrays are directly deposited on conductive substrates by magnetron sputtering via controlling the thin film growth mode. 3D TFBs based...
The electrochemical performance of most transition metal oxides based on the conversion mechanism is greatly restricted by inferior cycling stability, rate capability, high overpotential induced by the serious irreversible reactions, low electrical conductivity, and poor ion diffusivity. To mitigate these problems, highly porous Mn3O4 micro/nanocuboids with in situ formed carbon matrix (denoted as...
The lack of stable and efficient techniques to synthesize high‐quality large‐area thin films is one of the major bottlenecks for the real‐world application of the 2D transition metal dichalcogenides. In this work, the growth of molybdenum disulfide (MoS2) on sapphire substrates by sulfurizing the MoO3 film deposited by atomic layer deposition (ALD) is reported. The advantages of the ALD method can...
Freestanding and transferable silica nanosheets with thicknesses of ≈5–7 nm are prepared via ethyl acetate‐mediated hydrolysis of silica precursors in aqueous solution. The resulting silica nanosheets have shown many potential applications. For example, they can be used as the support film on the finer mesh grids for transmission electron microscopy imaging and as the precursor for the synthesis of...
An ultrathin, lightweight, and wearable Li‐O2 battery with a novel segmented structure is first fabricated by employing a “break up the whole into parts” strategy. Superior battery performance including low overpotential, high specific capacity, good rate capability, excellent cycle stability, and high gravimetric/volumetric energy density (294.68 Wh kg−1/274.06 Wh L−1) is successfully achieved even...
A novel cable‐type water‐survivable flexible Li‐O2 battery is developed with a hydrophobic and free standing gel polymer electrolyte. Superior battery performances are successfully achieved under mechanical twisting, bending, and even immersed in water conditions, showing the high promise to power next‐generation versatile flexible electronics.
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