Graphite based electrode modified with delithiated spinel Li1?0Cr0?05Mn1?95O4 for Li ion selective sensor

摘要

In this work, we introduced a highly selective and sensitive lithium ion sensor constituted ofngraphite electrode modified with a chromium doped spinel type manganese oxiden(Li1?0Cr0?05Mn1?95O4). The metal ion doped spinel manganese oxide was synthesised bynmechanochemical activation and characterised by XRD and SEM analysis. The sensor responsento lithium ions was linear with a slope of 111 mV/decade over a wide pH 10 in Tris buffer and wasnlinear in the concentration range 6?561026–1?061021 mol L21 with a detection limit ofn5?261026 mol L21.