Abstract
Bulk nanocrystalline Sn3N4powders were synthesised by a two step ammonolysis route. These provided good capacities in sodium and lithium cells, and good stability in sodium cells.
Highlights
Interest in sodium-ion batteries has ramped up drastically in recent years, with 800 in 2015.1 This stems from a realisation that as large scale applications of energy storage, including in transport, become more signi cant, the economically viable supply of lithium minerals may become price determining.[2]
We examine its suitability as a sodiumion or lithium-ion negative electrode material in conventional
Ammonolysis reactions of metal amides are common in chemical vapour deposition (CVD) of metal nitrides, and this has been demonstrated in production of Sn3N4 lms.[12]
Summary
Interest in sodium-ion batteries has ramped up drastically in recent years, with 800 in 2015.1 This stems from a realisation that as large scale applications of energy storage, including in transport, become more signi cant, the economically viable supply of lithium minerals may become price determining.[2]. CMC works best if composite electrodes are assembled from aqueous inks, and a previous attempt to use this binder with a metal nitride resulted in conversion to the oxide.[6] Recently sodium alginate, another binder applied in aqueous inks, showed even better performance than CMC in lithium cells using Si45 or Fe2O3 46 as negative electrode materials.
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