Synergies of the crystallinity and conductive agents on the electrochemical properties of the hollow Fe3O4 spheres

Synthesis of strontium hexaferrite nanoplates and the enhancement of their electrochemical performance by Zn2+ doping for high-rate and long-life lithium-ion batteries

Hexagonal structured strontium hexaferrites and their perfect high-rate long-term cycling performances.

Design and synthesis of dodecahedral carbon nanocages incorporated with Fe3O4

Dodecahedral carbon nanocages modified with Fe₃O₄ NPs (Fe₃O₄/C NCs) were constructed using ZIF-8 as template and polydopamine as carbon source. The NCs display controllable feature structures with Fe₃O₄ NPs homogenously distributed, which enriched the function of the C NCs.

Nanocrystalline iron oxide based electroactive materials in lithium ion batteries: the critical role of crystallite size, morphology, and electrode heterostructure on battery relevant electrochemistry

The whole versus the sum of its parts; contributions of nanoscale iron-containing materials to the bulk electrochemistry of composite electrodes.

Enhanced electrochemical performance of barium hexaferrite nanoplates by Zn2+ doping serving as anode materials

The Zn²⁺-doped BaFe₁₂O₁₉ nanoplates synthesized by a facile approach exhibit superior cycling performances as anode material, attributing to the Zn²⁺ doping.

Mesoporous ZnCo2O4 microspheres as an anode material for high-performance secondary lithium ion batteries

The as-prepared mesoporous ZnCo₂O₄ microspheres showed a high specific capacity and excellent electrochemical performance when used as an anode material for lithium ion batteries.

Multi-walled carbon nanotubes composited with nanomagnetite for anodes in lithium ion batteries

The multi-walled carbon nanotube (MWNT) nanocomposites with homogenously anchored nanomagnetite of 10–20 nm prepared by a hydrothermal-annealing method exhibit excellent performances as anode materials for lithium ion batteries.

Enhanced electrochemical performances of MoO2 nanoparticles composited with carbon nanotubes for lithium-ion battery anodes

Lab-made CNT nanocomposites decorated with MoO₂ nanoparticles (MoO₂/CNTs) demonstrated superior cycling and rate performances as LIB anode materials.

Facile fabrication of porous Ni(x)Co(3-x)O4 nanosheets with enhanced electrochemical performance as anode materials for Li-ion batteries

Herein, we report a novel and facile route for the large-scale fabrication of 2D porous NixCo3-xO4 nanosheets, which involves the thermal decomposition of NixCo1-x hydroxide precursor at 450 °C in air for 2 h. The as-prepared 2D porous NixCo3-xO4 nanosheets exhibit an enhanced lithium storage capacity and excellent cycling stability (1330 mA h g(-1) at a current density of 100 mA g(-1) after 50 cycles). More importantly, it can render reversible capacity of 844 mA h g(-1), even at a high current density of 500 mA g(-1) after 200 cycles, indicating its potential applications for high power LIBs. Compared to pure Co3O4, the reduction of Co in NixCo3-xO4 is of more significance because of the high cost and toxicity of Co. The improved electrochemical performance is attributed to the 2D structure and large amounts of mesopores within the nanosheets, which can effectively improve structural stability, reduce the diffusion length for lithium ions and electrons, and buffer volume expansion during the Li(+) insertion/extraction processes.

Recent advances in Mn-based oxides as anode materials for lithium ion batteries

The Mn-based oxides including MnO, Mn₃O₄, Mn₂O₃, MnO₂, CoMn₂O₄, ZnMn₂O₄and their carbonaceous composite/oxide supports with different morphologies and compositions as anode materials are reviewed.