By application of newly designed ligand 5-(3-(pyridin-3-yl)benzamido)isophthalic acid (HPBI) to react with Mn(NO) under solvothermal conditions, a 2-fold interpenetrated Mn-based metal-organic framework (Mn-PBI) with rutile-type topology has been obtained. When treated as a precursor by pyrolysis of Mn-PBI at 500 °C, mesoporous MnO/C-N nanostructures were prepared and treated as an lithium-ion battery anode. The MnO/C-N manifests good capacity of approximately 1085 mAh g after 100 cycles together with superior cyclic stability and remarkable rate capacity, which is supposed to benefit from a large accessible specific area and unique nanostructures. The remarkable performances suggest promising application as an advanced anode material.

Metal-organic frameworks (MOFs) are very promising self-sacrificing templates for the large-scale fabrication of new functional materials owing to their versatile functionalities and tunable porosities. Most conventional metal oxide electrodes derived from MOFs are limited by the low abundance of incorporated metal elements. This study reports a new strategy for the synthesis of multicomponent active metal oxides by the pyrolysis of polymetallic MOF precursors. A hollow N-doped carbon-coated ZnO/ZnCo O /CuCo O nanohybrid is prepared by the thermal annealing of a polymetallic MOF with ammonium bicarbonate as a pore-forming agent. This is the first report on the rational design and preparation of a hybrid composed of three active metal oxide components originating from MOF precursors. Interestingly, as a lithium-ion battery anode, the developed electrode delivers a reversible capacity of 1742 mAh g after 500 cycles at a current density of 0.3 mA g . Furthermore, the material shows large storage capacities (1009 and 667 mAh g ), even at high current flow (3 and 10 A g ). The remarkable high-rate capability and outstanding long-life cycling stability of the multidoped metal oxide benefits from the carbon-coated integrated nanostructure with a hollow interior and the three active metal oxide components.

A multicomponent active Cu2O–CuO–C composite supported on copper foam is fabricated and exhibits greatly enhanced performance for lithium storage.

A multifunctional polyhedral metal−organic framework with a pcu network topology based on supramolecular building blocks can be constructed by the reaction of Eu(NO 3 ) 3 and pyridine-3,5-dicarboxylic acid (H 2 PDC). The basic Eu III paddlewheel nodes as secondary building units (SBUs) are connected by PDC ligands to generate nanosized metal−organic cuboctahedra (MOCs), which are further connected by sharing the paddlewheel SBUs to give rise to a three-dimensional primitive cubic network arrangement. The obtained metal−organic frameworks (MOFs) exhibit excellent catalytic activity toward the cyanosilylation of aromatic aldehydes and could be reused without loss of activity. In addition, they can also be considered as a fluorescent probe for nitrobenzene sensing based on luminescence quenching effects arising from host−guest interactions. This porous MOF combining catalytic and fluorescent properties could further meet the requirement as a multifunctional material.

Transition metal oxides (TMOs), identified as a potential candidate for high-energy anode materials for state-of-the-art lithium-ion batteries (LIBs), suffer from the inherent defects of low electronic conductivity and dramatic volume variation, hindering their practical applications. It is still a great challenge to synthesize novel TMO anodes with satisfactory lithium storage performance. Herein, trimetallic Zn–Co–Cu-zeolitic imidazolate framework is designed with carbon nanotubes (CNTs) and copper foam (CF) serving as multifunctional bridges by postsynthetic metal-ion exchange and in situ solvothermal growth. After annealing, a novel trimetallic metal–organic framework (MOF)-derived polymetallic oxide, Cu0.39Zn0.14Co2.47O4–CuO@CNTs/CF hybrid, was successfully prepared. The introduction of conductive CNTs and a three-dimensional (3D) CF substrate effectively boosts the mechanical robustness and electronic conductivity of metal oxide composites, accelerates the lithium-ion diffusion, and reduces the impedance during the lithiation/delithiation process. When it is directly tested as a conductive-agent-free and binder-free electrode in LIBs, it presents distinguished long-cycling stability and high-rate capacity via the dominant mechanism of pseudocapacitive charge storage and the “electron-shared metal-Li+ double electric layer”. The as-prepared Cu0.39Zn0.14Co2.47O4–CuO@CNTs/CF electrode delivers a high specific capacity of 1649 mAh g–1 at 0.2 A g–1 together with 1282 mAh g–1 at 5 A g–1 over 1000 cycles. The novel 3D self-supported MOF-derived polymetallic oxide synthetic strategy proposed in this work sheds light on creation of potential anode materials for next-generation LIBs.