CuO/Cu2O composite hollow polyhedrons fabricated from metal–organic framework templates for lithium-ion battery anodes with a long cycling life

Abstract

Novel CuO/Cu2O hollow polyhedrons with porous shells were fabricated by thermal decomposition of coordination compound [Cu3(btc)2]n (btc = benzene-1,3,5-tricarboxylate) polyhedrons at 350 °C. When tested as anode materials for lithium-ion batteries, these hollow polyhedrons exhibited a reversible lithium storage capacity as high as 740 mA h g(-1) at 100 mA g(-1) after 250 cycles even if the charge-discharge process is stopped for one week during the test time.

Recent Progress on MOF-Derived Nanomaterials as Advanced Electrocatalysts in Fuel Cells

“…Transition metal/ metal oxides, in particular cobalt/cobalt oxide and iron/iron oxide [26,[32][33][34][35][36], are found to be active for oxygen reaction. However, inherent poor conductivity is one factor that limits the application of oxides as electrocatalysts in fuel cells.…”

“…By delicate design of MOFs precursors, together with careful post-treatment, the advantages and catalytic activity of MOFs materials can be fully inherited by the MOF-derived nanomaterials. For example, MOF-derived heteroatom-doped nanocarbon [28][29][30][31], transition metal/metal oxide-carbon hybrids and composites (as shown in Figure 2) [26,[32][33][34][35][36], with high surface area and porosity, have been reported to exhibit excellent catalytic activity and stability, while also displaying outstanding bifunctional activity toward ORR and oxygen evolution reaction (OER). It should be noted that MOFs precursors employed in developing heteroatom-doped nanocarbon can be conveniently tailored by coupling them with a second heteroatom-containing precursor.…”

Facile and template-free synthesis of spherical Cu2O as anode materials for lithium-ion batteries

“…Figure 3b shows the lithium storage performance of spherical Cu 2 O as anode materials for lithium-ion batteries, which was evaluated by galvanostatic charge-discharge tests at the current density of 100 mA g -1 over the potential It is observed that the first discharge and charge capacities are 458.71 and 133.18 mAh g -1 , respectively, corresponding to a coulombic efficiency of 29.03 %. Such a large irreversible capacity loss can be owing to the irreversible reaction between Cu 2 O and Li, as well as the irreversible formation of the solid electrolyte interface (SEI) layer containing both an inorganic and an organic layer on the Cu 2 O surface caused by the decomposition of the electrolyte [8,24,25]. Subsequently, the coulombic efficiency increases to 90 %.…”

“…Cuprous oxide (Cu 2 O), another important transition metal oxide, as a reddish p-type semiconductor with a direct forbidden band gap 2.17 eV, has a various applications in photo-catalysis [5], sensors [6], solar cells [7], CO oxidation, and lithium-ion batteries [8]. As used in lithium-ion batteries, Cu 2 O was regarded as a promising anode material due to some temptation advantages, such as its reversible mechanism with Li ?…”

NiRh nanoparticles supported on nitrogen-doped porous carbon as highly efficient catalysts for dehydrogenation of hydrazine in alkaline solution

“…Among them, the zeolitic imidazolate framework (ZIF-8) with a high carbon content and nitrogen-containing ligand is a good candidate to make nitrogen-doped porous carbon (NPC) by direct carbonization [20]. NPC derived from MOFs has been widely studied in clean energy application, such as gas storage and separation [21], lithium-ion batteries [22,23], supercapacitors [24,25], solar cells [26], and oxygen-reduction electrocatalysts [27,28]. However, the direct growth and anchoring of active metal NPs on NPC derived from MOFs with enhanced catalytic activity has rarely been reported.…”