Abstract
Lithium-ion batteries (LIBs) have been developed for over 30 years; however, existing electrode materials cannot satisfy the increasing requirements of high-energy density, stable cycling, and low cost. Here, we present a perovskite-type LaNiO3 oxide (LNO) as a new negative electrode material. LNO was successfully synthesized by a sol–gel method. The microstructure and electrochemical performance of LNO calcined at various temperatures have been systematically investigated. The LNO electrode shows a high rate capability and long cycling stability. In a C-rate test, a specific capacity of 77 mAh/g was exhibited at 6 C. LNO can also deliver a specific capacity of 92 mAh/g after 200 cycles at 1 C. This paper presents a type of binary metal oxide as a new anode material for high-performance LIBs.
Highlights
Lithium-ion batteries (LIBs), one of the most remarkable energy storage technologies for the past 30 years, have been widely used for portable electronics and power tools and are making their way into electric vehicles (EVs) and grid storages [1,2,3,4]
These findings reveal that the product is a perovskite-type LaNiO3 (PDF# 34-1028) without related impurity phase
As the calcining temperature increased, the strongest peak of (110) crystal face separates into three peaks, namely (117), (020), and LaNiO3 oxide (LNO) powders, Super P, and polyvinylidene fluoride (PVDF) with a weight ratio of 8:1:1 were mixed and fully ground using a mortar and pestle
Summary
Lithium-ion batteries (LIBs), one of the most remarkable energy storage technologies for the past 30 years, have been widely used for portable electronics and power tools and are making their way into electric vehicles (EVs) and grid storages [1,2,3,4]. 1 School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China a high-energy density, high-theoretical capacity anode electrode material that comprised Se-based oxides and had a reaction mechanism based on Li–Se alloys. These types of metallic oxides were not considered alternative electrode materials for LIBs because of their irreversibility at room temperature.
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