Cobalt (Co)-doped MOF-5s (Co-MOF-5s) were first synthesized by a secondary growth method, followed heat treatment to yield Co-doped ZnO coated with carbon (CZO@C). Compared carbon-coated (ZnO@C), the doping of Co increased graphitization degree on surface CZO@C nanoparticles and enhanced conductivity material. The electrochemical properties materials characterized galvanostatic discharge/charge tests. It was found that as-synthesized composites enabled reversible capacity 725 mA h g–1 up...

Heteroatom doped carbon materials have recently demonstrated an outstanding sodium storage ability and are being considered as the most promising candidates anodes for ion batteries.

There have been a massive amount of spent LiFePO4 batteries produced in recent years because is widely used energy storage and electric vehicles, which need to be recycled urgently. However, considering the manufacturing cost LiFePO4, traditional metallurgical technology not economical recover LiFePO4. Moreover, performance directly regenerated materials inferior that commercial materials. It hinders development cathode for lithium-ion batteries. Herein, with severely degraded by...

A flexible elastic N-doped carbon foam (NCF) has been successfully synthesized <italic>in situ via</italic> direct carbonization/pyrolysis of polyurethane foam, which is a facile, cost-effective and environmentally friendly method.

A poly(propylene carbonate) (PPC)-based sandwich-like composite solid polymer electrolyte (SE) was designed and applied to solid-state lithium ion batteries at 25 °C. The structure of the SE composed three parts. polypropylene separator used as a support membrane enhance strength membrane. Succinonitrile in PPC-based increase ionic conductivity. Pure PPC buffer layer closed anode, which could improve interface compatibility, Coulombic efficiency, cycle life batteries. exhibited good...

The limitation of a high-voltage lithium (Li) metal battery lies in the absence robust electrolyte that can endure oxidation loss at cathode and suppress dendrite growth Li anode.

CoPcCl catalyzed the Li₂S decomposition and enhanced sulfur utilization remarkably.

The practical application of lithium-metal anodes in high-energy-density rechargeable lithium batteries is hindered by the uncontrolled growth dendrites and limited cycle life. An ether-based gel polymer electrolyte (GPE-H) developed through situ polymerization method, which has close contact with electrode interface. Based on DFT calculations, it was confirmed that cationic groups produced polar solvent tris(1,1,1,3,3,3-hexafluoroisopropyl) (HFiP) initiate ring-opening DOL battery. As a...

Abstract Carbonaceous materials are one of the most promising anode for sodium‐ion batteries, because their abundance, stability, and safe usage. However, practical application carbon is hindered by poor specific capacity low initial Coulombic efficiency. The design porous structure doping with heteroatoms two simple effective methods to promote sodium storage performance. Herein, N, P co‐doped fabricated using renewable biodegradable gelatin as nitrogen resource, phosphoric acid phosphorus...

Metal oxides as anode materials for lithium storage suffer from poor cycling stability due to their conversion mechanisms. Here, we report an efficient biomimetic method fabricate a conformal coating of conductive polymer on ZnFe2O4 nanoparticles, which shows outstanding electrochemical performance material storage. Polydopamine (PDA) film, bionic ionic permeable was successfully coated the surfaces particles by self-polymerization dopamine in presence alkaline buffer solution. The thickness...

Forming uniform metal oxide nano-coating is a well-known challenge in the construction of coating materials. Herein, we demonstrate effectiveness Al2O3 on different kinds core cathode active materials by simple, facile method, forming surface-coating layer with thicknesses achieving nanometers precision. Typically, uniform, nano-sized and controllable endows LiNi0.5Co0.2Mn0.3O2 material superior high-voltage cycling thermal stability. The stability can be attributed to reduced side...

Fe single-atom catalysts of oxygen reduction reaction (ORR) are restricted by the agglomeration during synthesis process and inferior stability, especially in acidic conditions. An efficient strategy is urgently needed to alleviate these disadvantages. In this work, a two-dimensional (2D) Fe–N–C catalyst derived from layered complex was designed synthesized for ORR. single atoms dispersed on 2D hierarchical porous N-doped carbon nanosheets (Fe–N–C) were through coordination Fe3+ benzidine...

Lithium polysulfides (LiPSs) shuttling effect is the main problem to be solved for cathode materials of lithium–sulfur batteries. The adsorption and catalytic conversion LiPSs by host have become focus materials. In this work, transition metal phosphides are combined with three-dimensional carbon nanosheets form an efficient stable sulfur material. designed composite material effective in solving problems slow reaction kinetics Li–S batteries shuttling. Here, through supramolecular...

The organic alkali metal salt of sodium 4-(methylamino)butanoate has been synthesized and used as a precursor for N-doped porous carbon/carbon nanotubes composite (NPC/CNTs). cheap easy obtained CNTs slurry Na were raw materials. NPC provided polysulfides (LiPS) adsorption sites constructed the conductive network. S/NPC/CNTs cathode material, which strong capacity high conductivity, restrained shuttle effect to large extent enhanced sulfur utilization, especially at current density. synergy...

Flexibility and power density are key factors restricting the development of flexible lithium-ion batteries (FLIBs). Interface defect engineering can modify intrinsic ion/electron kinetics by regulating electronic structure. Herein, a polyacrylonitrile/MgFe2O4 (PAN-MFO) electrode with heterojunction oxygen vacancies was first designed synthesized as free-standing anode FLIBs electrostatic spinning technology. The PAN carbon nanofiber (PAN-CNF) skeleton structure provides fast conductive...

Ti 4 O 7 , as a highly conductive and hydrophilic coating on the zinc anode, has high adsorption energy low migration barrier for Zn 2+ exhibiting dendrite-free surface, polarization, cycling stability coulombic efficiency.

Abstract Little is known about the blood‐feeding physiology of arbovirus vector Aedes aegypti although this type mosquito to transmit infectious diseases dengue, Zika, yellow fever, and chikungunya. Blood feeding in female A. essential for egg maturation transmission disease agents between human subjects. Here, we identify sulfakinin receptor gene SKR from genome show that expressed at different developmental stages varied anatomical localizations adult (at three days after eclosion), with...

A cobalt doped MOF acted as a catalyst and carbon source for CNTs containing anode material with better performance.