Li/Na Ion Intercalation Process into Sodium Titanosilicate as Anode Material

Abstract

A natisite structured material, Na 2 TiSiO 5 , has been investigated as anode for lithium-and sodium-ion batteries. The results show that Na 2 TiSiO 5 can deliver a capacity of 260 mAh g À 1 with good reversibility when used as anode in Li-ion batteries. In contrast to the conversion reaction mechanism observed for its analogue Li 2 TiSiO 5 , a solid-solution type intercalation mechanism is found for the lithiation/delithiation process of Na 2 TiSiO 5 .Lithium intercalation occurs through a three-dimensional diffusion path after crossing an energy barrier around 1.0 eV. Sodium-ions could only migrate through a one-dimensional channel after overcoming a much higher energy barrier of 1.8 eV, which solely delivers a reversible capacity of 40 mAh g À 1 for sodium-ion storage.[a] Dr.

Towards the sustainable synthesis of microporous and layered titanosilicates: mechanochemical pre-treatment reduces the water amount

“…For example, natisite may be used as an anode in high capacity lithium-ion batteries with excellent rate performance. 27,28 Synthetic sitinakite is one of the most important titanosilicates used as commercial ion exchangers IONSIV® 910 or IE-910 (powder) and IONSIV® 911 or IE-911 (granular) to selectively remove radioactive Cs + from nuclear waste. 29,30 GTS-1 also has a great affinity for Cs + , while AM-2 may be used to remove Hg 2+ in the presence of Mg 2+ .…”

Rb4Li2TiOGe4O12: a novel high-performance titanyl germanate anode for Li-ion batteries

“…As shown in Fig. 3e, compared with graphite 27 and other titanyl-based anodes, 2,8–13 the RLTG anode material has balanced electrochemical performances with higher specific capacity and lower operating voltage, which indicates that the whole battery composed of the RLTG anode will have higher energy density. The good electrochemical performance of RLTG comes from three aspects.…”

Progress of Phosphate‐based Polyanion Cathodes for Aqueous Rechargeable Zinc Batteries

“…In the past decade, intensive research for the polyanion compounds based on a variety of polyanionic types such as SiO 5 6− , SO 4 3− and PO 4 3group, have been performed in organic LIBs or sodium ion batteries (SIBs). [27][28][29][30][31][32] However, considering the decomposition potential of water in an aqueous solution, most of SiO 4…”

“…In the past decade, intensive research for the polyanion compounds based on a variety of polyanionic types such as SiO 5 6− , SO 4 3− and PO 4 3‐ group, have been performed in organic LIBs or sodium ion batteries (SIBs). [ 27–32 ] However, considering the decomposition potential of water in an aqueous solution, most of SiO 4 3‐ and SO 4 3− ‐based polyanion‐type compounds are difficult to occur intercalation/de‐intercalation reactions within the decomposition potential of water, and currently available electrodes in aqueous rechargeable batteries mainly contains phosphates‐based polyanionic compounds. At present, the most widely studied electrodes in aqueous electrolytes are the olivine and NASOCN structures of phosphates‐based polyanionic compounds.…”