Aqueous zinc‐ion batteries (ZIBs) are an alternative energy storage system for large‐scale grid applications compared with lithium‐ion batteries, when the low cost, safety, and durability are taken into consideration. However, the reliability of the battery systems always suffers from the serious challenge of the large Zn dendrite formation and “dead Zn,” thus bringing out the inferior cycling stability, and even cell shorting. Herein, a dendrite‐free organic anode, perylene‐3,4,9,10‐tetracarboxylic diimide (PTCDI) polymerized on the surface of reduced graphene oxide (PTCDI/rGO) utilized in ZIBs is reported. Moreover, the theoretical calculations prove the reason for the low redox potential. Due to the protons and zinc ions coparticipant phase transfer mechanism and the high charge transfer capability, the PTCDI/rGO electrode provides superior rate capability (121 mA h g −1 at 5000 mA g −1 , retaining the 95% capacity of that compared with 50 mA g −1 ) and a long cycling life span (96% capacity retention after 1500 cycles at 3000 mA g −1 ). In addition, the proton coparticipation energy storage mechanism of active materials is elucidated by various ex‐situ methods.

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Iron‐based metal organic framework (MOF) MIL‐53 is used as a precursor and self‐template to synthesize a 3D porous carbon/FeF3 ⋅ 0.33 H2O composite in situ. We find that the organic ligands in iron‐containing MOFs can convert into highly graphitized carbon with the catalysis of central Fe atoms. The FeF3 ⋅ 0.33 H2O nanoparticles formed after fluorination and dehydration are surrounded by highly graphitized carbon. In the composite, the graphitized 3D porous carbon can provide passageways for electron transport and ultrasmall FeF3 ⋅ 0.33 H2O nanoparticles facilitate the diffusion of Li ions. The composite shows excellent performance for the Li storage. A capacity of 86 mAh g−1 can be reached at an ultra‐high rate of 20 C. Even after 300 charge−discharge cycles at 5 C, the capacity remains at 113 mAh g−1.

Synopsis Objective The objective of this study was to develop an initial lexicon for sensory properties of nail polish and to validate this lexicon using a descriptive analysis study of selected samples. Methods Seventeen commercial products from four categories (regular, flake‐containing, water‐based and gel) were used in this study. Descriptive sensory analysis was conducted in this study to characterize and evaluate application and removal properties of these nail polishes. Data was then processed by ANOVA, Principal Component Analysis (PCA) and Pearson's Correlation Coefficient analysis to explore the differences among samples and attributes. Results A lexicon of 21 sensory attributes was developed to describe the application of nail polish. It included three initial texture attributes, thirteen initial appearance attributes and five aroma attributes. A lexicon of five attributes in five stages was developed to describe the removal of nail polish. The results from ANOVA and PCA showed that attributes in the lexicon separated the different product categories. Conclusion The results of this study indicated that descriptive sensory analysis can be used to evaluate nail polish. The results of this study present scientists who are working on nail polish an additional tool to describe application and removal properties of nail polish.

NdBaCo2O5+δ (NBCO) based double perovskite is an attractive cathode material with many advantages, yet its electrochemical performance still cannot meet the requirements. We first design and prepare Zr cation doping NdBaCo1.95Zr0.05O5+δ and systematically study the effects of Zr-doping on the oxygen kinetics, redox, and electrical properties of NdBaCo1.95Zr0.05O5+δ as cathode material for oxygen conduction SOFCs. NdBaCo1.95Zr0.05O5+δ show rapid oxygen bulk diffusion coefficients and surface exchange coefficients through zirconium cations doping, reaching 5.827 × 10–5 cm2·s–1 and 2.878 × 10–4 cm·s–1, respectively, at 700 °C, enabling the improved performance of oxygen reduction, and the polarization impedance is as low as 0.024 Ω·cm2.

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The reduced operating temperature is requisite for the wide application of the solid oxide fuel cells owing to the lower cost and longer lifetime. Nevertheless, in the intermediate temperature range, the significantly increased polarization loss appears in the solid oxide fuel cells, reducing the final performance. In order to solve this issue, here we report the one-dimensional CuCo 2 O 4 −Er 0.4 Bi 1.6 O 3 composite fibers, which are synthesized via electrospun method and utilized as cathodes of intermediatetemperature solid oxide fuel cells. The optimal Er 0.4 Bi 1.6 O 3 mass ratio of 35 wt % has been ascertained, possessing the lowest cathode polarization resistance of 0.021 Ω cm 2 at 800 °C, which is 3.3 times lower than those of the CuCo 2 O 4 −Er 0.4 Bi 1.6 O 3 nanoparticle-structured composite cathode. All of the results demonstrate the potential of the CuCo 2 O 4 −Er 0.4 Bi 1.6 O 3 composite nanofiber serving as an efficient cathode for the intermediate temperature solid oxide fuel cells.