Conjugated polymeric molecules have been heralded as promising electrode materials for the next-generation energy-storage technologies owing to their chemical flexibility at molecular level, environmental benefit, and cost advantage. However, before any practical implementation takes place, low capacity, poor structural stability, sluggish ion/electron diffusion kinetics remain obstacles that be overcome. Here, we report synthesis of a few-layered two-dimensional covalent organic framework...

A unique CuO@NiO microsphere with three-layer ball-in-ball hollow morphology is successfully synthesized by Cu–Ni bimetallic organic frameworks. The beforehand facile microwave-assisted production of the Ni framework sphere used as template to induce control oxides. Designed controlled surface cationic exchange reactions between Cu and ions, there an elemental gradient (decreased amount CuO but increased NiO) from shell core product. This ternary metal oxide structure found be very suitable...

The metal–organic-framework (MOF) approach is demonstrated as an effective strategy for the morphology evolution control of MIL-53(Fe) with assistance microwave irradiation. Owing to homogeneous nucleation offered by irradiation and confined porosity skeleton MOF templates, various porous Fe2O3 nanostructures including spindle, concave octahedron, solid yolk–shell nanorod are derived simply adjusting time. formation mechanism precursors their iron oxides investigated. main product mesoporous...

Covalent organic frameworks (COFs) with reversible redox behaviors are potential electrode materials for lithium-ion batteries (LIBs). However, the sluggish lithium diffusion kinetics, poor electronic conductivity, low capacities, and rate performance most reported COF limit their further application. Herein, a new 2D (TFPB-COF) six unsaturated benzene rings per repeating unit ordered mesoporous pores (≈2.1 nm) is designed. A chemical stripping strategy developed to obtain exfoliated...

Organic electrodes for low-cost potassium ion batteries (PIBs) are attracting more interest by virtue of their molecular diversity, environmental friendliness, and operation safety. But the sluggish diffusion kinetics, dissolution in organic electrolyte, poor electronic conductivity, low reversible capacities several drawbacks compared with inorganic counterparts. Herein, boronic ester based covalent framework (COF) material is successfully prepared on exterior surface carbon nanotubes...

Abstract The development of the next‐generation lithium ion battery requires environmental‐friendly electrode materials with long cycle life and high energy density. Organic compounds are a promising potential source for batteries due to their advantages chemical richness at molecular level, cost benefit, environmental friendliness, but they suffer from low capacity dissatisfactory mainly hydrophobic dissolution in organic electrolytes poor electronic conductivity. In this work, two types...

In order to fulfill the increasing demand for renewable energy, besides lithium-ion batteries, other alkali (Na, K)-ion batteries are extensively investigated. However, difficulty find universal and environmentally benign electrodes these still severely restricts their development. Promising characteristics, including molecular diversity, low cost, operation safety, endow organic more advantages applications in alkali-ion batteries. usually deliver a reversible capacity smaller than that of...

Lithium ion battery is the predominant power source for portable electronic devices, electrical vehicles, and back‐up electricity storage units clean renewable energies. High‐capacity long‐life electrode materials are essential next‐generation Li‐ion with high energy density. Here bimetal‐organic‐frameworks synthesis of Co 0.4 Zn 0.19 S@N S codoped carbon dodecahedron shown rooted nanotubes (Co‐Zn‐S@N‐S‐C‐CNT) high‐performance application. Benefiting from synergetic effect two metal sulfide...

Metal–organic frameworks (MOFs) and relative structures with uniform micro/mesoporous have shown important applications in various fields. This paper reports the synthesis of unprecedented mesoporous Ni x Co 3− O 4 nanorods tuned composition from Co/Ni bimetallic MOF precursor. The Co/Ni‐MOFs are prepared by a one‐step facile microwave‐assisted solvothermal method rather than surface metallic cation exchange on preformed one‐metal template, therefore displaying very distribution two species...

Multilayer NiO@Co₃O₄ hollow spheres are modified by graphene quantum dots and exhibit superior performances for lithium-ion batteries supercapacitors.

Compared to inorganic electrodes, organic materials are regarded as promising electrodes for lithium-ion batteries (LIBs) due the attractive advantages of light elements, molecular-level structural design, fast electron/ion transferring, favorable environmental impacts, and flexible feature, etc. Not only specific capacities but also working potentials reasonably tuned by polymerization, electron-donating/withdrawing groups, multifunctional groups well conductive additives, which have...

Abstract Covalent organic frameworks (COF) or metal–organic have attracted significant attention for various applications due to their intriguing tunable micro/mesopores and composition/functionality control. Herein, a coordination‐induced interlinked hybrid of imine‐based covalent Mn‐based (COF/Mn‐MOF) based on the MnN bond is reported. The effective molecular‐level compositing COF MOF endows with unique flower‐like microsphere morphology superior lithium‐storage performances that...

The poor conductivity of the pristine bulk covalent organic material is main challenge for its application in energy storage. mechanism symmetric alkynyl bonds (C≡C) materials lithium storage still rarely reported. Herein, a nanosized (≈80 nm) alkynyl-linked phenanthroline framework (Alkynyl-CPF) synthesized first time to improve intrinsic charge and insolubility lithium-ion batteries. Because high degree electron conjugation along units N atoms from groups, Alkynyl-CPF electrodes with...

Fatal issues in lithium metal anodes (LMA), such as detrimental dendrites growth and fragile solid-electrolyte interphase (SEI) during the Li plating/stripping process, often hinder practical application of batteries (LMBs). Herein, cobalt-coordinated sp-carbon-conjugated organic polymer (Co-spc-COP) is constructed protective layer for regulating interface stability LMA. The unique synergistic beneficial effect functional groups (C≡C linkage, C=N units aromatic rings) Co sites not only regulate

Zinc metal anode shows promise as a candidate material for high-performance zinc-based batteries due to its high safety and low cost. However, the rampant growth of zinc dendrites occurrence...

Graphene-based nanocomposite anodes are reviewed with emphasis on the structure matching and interaction between graphene second-phase component their Li-ion storage performances.

In this work, hydroxyl-functionalized Mo2 C-based MXene nanosheets are synthesized by facilely removing the Sn layer of SnC. The surface C suppresses shuttle effect lithium polysulfides (LiPSs) through strong interaction between Mo atoms on MXenes and LiPSs. Carbon nanotubes (CNTs) further introduced into phase to enlarge specific area composite, improve its electronic conductivity, alleviate volume change during discharging/charging. surface-bound sulfur in hierarchical C-CNTs host can lead...

Yolk-shell NiO microspheres are modified by two types of functionalized graphene quantum dots (denoted as NiO/GQDs) via a facile solvothermal treatment. The modification GQDs on the surface greatly boosts stability NiO/GQD electrode during long-term cycling. Specifically, with carboxyl-functionalized (NiO/GQDsCOOH) exhibits better performances than amino-functionalized (NiO/GQDsNH2 ). It delivers capacity ≈1081 mAh g-1 (NiO contribution: ≈1182 ) after 250 cycles at 0.1 A . In comparison,...

This paper reports fast microwave hydrothermal synthesis of Ni-based metal–organic frameworks (Ni-MOFs) and their derived yolk–shell NiO structures by direct calcination in air. The molar ratio the Ni ion to benzene-1,3,5-tricarboxylic acid (H3BTC) ligand has important influence on morphologies electrochemical performances. obtained microsphere displays a large reversible capacity 1060 mAh g–1 at small current density 0.2 A good high-rate capability when evaluated as an anode for...

Abstract Herein, an active catalyst A‐Ni@CMK is developed with the atomically dispersed NiN 4 moieties on mesoporous carbon for electrocatalytic CO 2 reduction reaction (CO RR) through a step‐by‐step pore‐filling synthetic strategy. Concretely, as‐synthesized exhibits outstanding catalytic performance RR in H‐cell Faradaic efficiency of (FE ) > 80% wide electrochemical potential window (−0.5 to −0.9 V vs RHE) and large partial current density ( j 24 51 mA cm −2 at −0.6 −0.8 versus RHE,...