Abstract: Olivine-type compounds, their preparation and use in cathode materials for sodium-ion batteries. The olivine-type compounds may be obtained by a direct synthesis embodying a hydrothermal method. The method may include preparing an aqueous mixture including a M-containing compound, a M?-containing compound and a M?-containing compound to obtain a M-M?-M? mixture; adding a P-containing compound to the mixture M-M?-M? mixture to obtain a M-M?-M?-P mixture; adding a Na-containing compound to the M-M?-M?-P mixture to obtain a Na-M-M?-M?-P mixture; and introducing the Na-M-M?-M?-P mixture into an autoclave to perform crystal growth and obtain the compound of general formula NahMiM?jM?kPO4.

Abstract: This disclosure provides for Olivine-type compounds, their preparation and use in cathode materials for sodium-ion batteries. The olivine-type compounds of the invention are obtained by a direct synthesis embodying a hydrothermal method.

Abstract: Here are described methods for the delithiation of carbon-free olivines, for instance, by the addition of an external carbon source in the presence of an oxidizing agent, e.g. a persulfate.

Abstract: This disclosure provides for Olivine-type compounds, their preparation and use in cathode materials for sodium-ion batteries. The olivine-type compounds of the invention are obtained by a direct synthesis embodying a hydrothermal method.

Abstract: Here are described methods for the delithiation of carbon-free olivines, for instance, by the addition of an external carbon source in the presence of an oxidizing agent, e.g. a persulfate.

Abstract: The present invention describes a hierarchical graphitized carbon foam comprising an interconnected macroporous structure with an ordered mesoporous wall structure, a process for its preparation, as well as to a process for the synthesis of a variety of bimodal porous organic polymer and/or inorganic metal oxide materials.

Abstract: A nanoparticulate organic hybrid material comprising inorganic nanoparticles covalently grafted with at least one anion of an organic sodium or lithium salt is provided. In addition, a process for preparing the nanoparticulate organic hybrid material and its use in the preparation of electrolytes suitable for lithium and sodium secondary batteries are provided.

Abstract: The present invention describes a hierarchical graphitized carbon foam comprising an interconnected macroporous structure with an ordered mesoporous wall structure, a process for its preparation, as well as to a process for the synthesis of a variety of bimodal porous organic polymer and/or inorganic metal oxide materials