Physical and electrochemical properties of Li[NixCo1−x]O2 doped with manganese

Abstract

Abstract. The demand for high power density and low cost material for lithium-ion battery is very high. Commercially available material, such as LiCoO2, has limited capacity and high cost; this has caused the exploration of alternative materials. In this paper, Mn doped into Li[NixC%_• 2 host structure was prepared by a mixed hydroxide technique. XRD results show that the synthesized powder has a higher degree of crystallinity with the separation between the (108) and (110) peaks being more obvious for Mn doped powder. The morphology of synthesized powder, determined by Field Effect Scanning Electron Microscope (FE-SEM), shows that both samples having multi-angle particle shapes. Energy Dispersive X-ray (EDAX) analysis shows that all the expected elements were present in the synthesized materials. Cyclic voltammogram (CV) of the investigated samples show that the onset of the Jahn-Teller effect was shifted to the higher voltage when the Li[Ni 0 ~Co02]02 was doped with Mn, and has improved the cycle performance.

Mn as a Substituted Cation in LiCoO₂ Cathode Materials

“…LiCoO 2 is a well known cathode material used commercially in lithium ion batteries. Since cobalt is expensive and relatively scarce in nature, substitution with an element that is cheaper and non-toxic may be a good solution to the problem [1,3]. For this purpose, Mn is used in this work.…”

“…Mn is well known as a battery material component. It is more abundant, less toxic and cheaper than Co [1,5,3,8]. Mn is used in dry cells commonly available commercially [2,7].…”

Mn Substitution with Co in LiCo_(1-X)Mn_xO₂ Cathode Materials and their Charge-Discharge Characteristic

“…The lithium-ion batteries technology is widely explored due to its superior performance and possible use in many applications [1,2,4]. The demand of inexpensive and high power density material for lithium-ion battery is on the increase [1,2,3,5]. LiCoO 2 is a well known cathode material used commercially in lithium-ion batteries [3].…”

“…The demand of inexpensive and high power density material for lithium-ion battery is on the increase [1,2,3,5]. LiCoO 2 is a well known cathode material used commercially in lithium-ion batteries [3]. However, there are a few limitations as cobalt is expensive and relatively scarce in nature [1,2,3,5].…”

“…LiCoO 2 is a well known cathode material used commercially in lithium-ion batteries [3]. However, there are a few limitations as cobalt is expensive and relatively scarce in nature [1,2,3,5]. Many efforts have been made to find alternatives to overcome the situation [1,2].…”