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[Display omitted] • Bimetallic CuCo-MOFs/NF were successfully in-situ prepared by hydrothermal treatment. • The morphology of bimetallic MOFs can be adjusted by changing the ratio of metal ions. • The CuCo-MOFs/NF shows high sensitivity of 8304.4 μA mM−1 cm−2 for glucose sensing. Metal-organic frameworks (MOFs) have great potential for electrochemical biosensors. In this paper, bimetallic MOFs were successfully in-situ grown on nickel foam (NF) through a facile one-pot hydrothermal treatment. X-ray diffraction, X-ray photoelectron spectroscope, Fourier transform infrared spectroscopy, energy dispersive spectrometer, and scanning electron microscopy were used to the structural and morphological characterization of bimetallic MOFs. Electrochemical measurement indicated that Cu 1 Co 2 -MOF/NF composite electrode processed a high sensitivity of 8304.4 μA mM−1 cm−2, a low detection limit of 0.023 mM (S/N = 3). Moreover, it also showed good anti-interference ability toward ascorbic acid (AA), uric acid (UA), dopamine hydrochloride (DA) and sodium chloride (NaCl). These results suggest that Cu 1 Co 2 -MOF/NF is a promising electrode material for high-performance glucose sensing. [ABSTRACT FROM AUTHOR]

[Display omitted] • PMVO-sls is conducive to electrolyte transport and ion diffusion, making it a competitive electrode material. • Interlayer PME not only acts as an effective interlayer stabilizer, but can be used as a reversible storage site for Zn2+. • PMVO-sls acts as a AZIBs cathode has an reversible capacity of 344 mA h g−1 at 0.2 A/g, and excellent cyclic stability. • PMVO-sls/2.8 M Zn (CF 3 SO 3) 2 + 0.2 M ZnSO 4 /Zn AZIBs has a higher reversible capacity and better cycle stability. Aqueous zinc ion batteries (AZIBs) have become powerful substitutes for large-scale energy storage because of their high safety and low cost, so the design of high-performance cathode materials has always been a requirement. Layered V x O y is one key type of cathode materials for rechargeable AZBs. Usually, it shows two-dimensional (2D) ion diffusion mechanism through the intercalation/deintercalation of Zn2+ at edge sites, but is plagued by the inert basal planes. Here, polymelamine (PME) was successfully inserted into the layered structure of VO 2 nH 2 O and an organic–inorganic supercrystalline structure (PMVO-sls) with layered structure along the c-axis and ab plane was formed, thus providing additional ion diffusion channels and abundant active sites. The highly efficient and ultrafast 3D Zn2+ intercalation/deintercalation behaviors along both the c-axis and ab plane of VO 2 nH 2 O are realized for the first time in AZIBs. Moreover, PMVO-sls has rich oxygen vacancy (Od) which is beneficial to electrolyte transport and ion diffusion, and it is a very competitive electrode material. Experimental data and density functional theory calculation (DFT) have confirmed that the intercalation of PEM can improve the electronic conductivity of materials and explained the possibility of Zn2+ diffusion through 3D interlayer structural channels. As cathode materials for AZIBs in 3 M Zn (CF 3 SO 3) 2 , PMVO-sls exhibited an ideal reversible capacity of 344 mA h g−1 at 0.2 A g−1, and excellent cyclic stability (121 mA h g−1 retained after 4,500 cycles at 10 A g−1, a retention rate of 93%). Furthermore, in PMVO-sls/2.8 M Zn (CF 3 SO 3) 2 + 0.2 M ZnSO 4 /Zn AZIBs, PMVO-sls has a higher reversible capacity with an reversible capacity of 392.1 mA h g−1 at 0.2 A g−1 and better cyclic stability (180 mA h g−1 retained after 6,000 cycles at 10 A g−1, a retention rate of 90%). This method can provide a new way for the synthesis of high quality cathode materials for AZIBs and other metal ion batteries. [ABSTRACT FROM AUTHOR]

[Display omitted] • NiCoP electrocatalyst was prepared by two-step hydrothermal phosphating process. • A simple and controllable method was used to construct layered porous plates to reduce the charge transfer resistance of NiCoP materials and showed the best catalytic performance. • NiCoP porous sheet has a large electrochemical active surface area and catalytic activity and the stability of the catalyst was investigated. Research on the stable and high-efficiency transition metal-based electrocatalyst to achieve hydrogen evolution reaction (HER) becomes one of the core solutions for water decomposition. Non-precious metals phosphide has the potential to become a non-noble metal electrocatalyst due to its good electronic structure effect, extremely low price, and expected durability in a larger pH range. In this paper, hexagonal NiCoP porous nanosheets were synthesized using a facile hydrothermal and post-phosphating method. We anticipate that bimetal doping can further enhance electrocatalyst activity as well as improve the capability of absorbing hydrogen from the materials by modifying the electronic structure. The obtained NiCoP electrocatalyst behaves outstanding catalytic performances for HER in alkaline media with 83 mV initial overpotential at 10 mA cm−2, as well as the low Tafel slopes of 41 mV dec−1. In addition, the current density showed almost no attenuation in the 10 h chronoamperometry experiment. The outstanding catalytic function can be attributed to the nanosheets with many orifices, which can expand the effective reaction specific surface area, promote mass transport and boost the water decomposition efficiency. And the collaboration of Ni and Co in NiCoP nanosheets can also improve the electrochemical function. Moreover, the current work offers a feasible approach for synthesizing a cheap and efficient NiCoP electrocatalyst for HER, which is especially appealing to practical application. [ABSTRACT FROM AUTHOR]