Potentiometric CO2 sensor with Au,Li2CO3/Li+-electrolyte/LiMn2O4 structure

Abstract

A new solid-state electrochemical cell for CO 2 sensing has been set up using Li 3 PO 4 and Li 4 SiO 4 (LiSiPO) solid electrolyte and Li 1-δ Mn 2 O 4 /MnO 2 as reference electrode. The electromotive force (EMF), the reproducibility, and the long-term stability of the sensor signals have been examined at temperature between 400 and 500°C exposure on dry atmosphere. The EMF is dependent on the partial pressure of CO 2 and can be expressed by the Nernst equation. The cell is long-term stable at temperature as low as 450°C and the sensor signals are reproducible with high accuracy.

Simple solid-state method for synthesis of Li[Li0.20Mn0.534Ni0.133Co0.133]O2 cathode material with improved electrochemical performance in lithium-ion batteries

“…However, the traditional commercial cathode materials, such as spinel LiMn 2 O 4 , olivine LiFePO 4 , and layered Li[Mn 1/3 Ni 1/3 Co 1/3 ]O 2 , are largely inferior to commercial graphite anode materials in terms of capacity. Thus, these cathode materials cannot fully satisfy the energy density demands of vehicles or other advanced applications [1][2][3][4]. In this regard, lithium-rich layered oxide materials (LLOs) xLi 2 MnO 3 ·(1−x)LiMO 2 (M=Mn, Ni, Co, Fe, Cr, etc.)…”