Ethylene Glycol‐Assisted Sol‐Gel Method for Preparing LiNi1/3Co1/3Mn1/3O2 as Cathode Material for Lithium‐Ion Batteries with Excellent Electrochemical Performance. Issue 39 (21st October 2019)

• Record Type: Journal Article
• Authors: Zhu, Limin; Yang, Guang; Liu, Jianping; Bao, Chenguang; Xie, Lingling; Cao, Xiaoyu
• Is Part Of: ChemistrySelect. Volume 4:Issue 39(2019)
• Page Start: 11475
• Page End: 11482
• Publication Date: 2019-10-21
• Subjects: ethylene glycol-assisted sol-gel method -- LiNi1/3Co1/3Mn1/3O2 -- cathode material -- lithium-ion batteries -- electrochemical performance; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.201903231
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: Ethylene glycol‐assisted sol‐gel method is employed for preparing LiNi1/3 Co1/3 Mn1/3 O2 used as cathode material in lithium‐ion batteries. The prepared material has higher c / a value and lower cationic mixing degree of Li + /Ni 2+, illuminating a more orderly structure, smaller particle size and more regular particle shape, which shorten the diffusion length for Li + ions and allow the rapid kinetics of Li + ions diffusion. Sure enough, the as‐prepared LiNi1/3 Co1/3 Mn1/3 O2 material displays the first discharge capacity of 208 mAh g −1 and keeps 133 mAh g −1 after 200 cycles between 2.5 and 4.5 V at 0.2 C. In addition, it demonstrates excellent rate capacity of 143 mAh g −1 at 2 C. The results show that LiNi1/3 Co1/3 Mn1/3 O2 prepared by this method has high discharge capacity, admirable rate capability and exceptional cycle stability, which provides significant insights into the synthesis of other layered oxides as cathode materials for lithium‐ion batteries. Abstract : In this study, LiNi1/3 Co1/3 Mn1/3 O2 with more orderly layered structure and smaller particle size was prepared through ethylene glycol‐assisted sol‐gel method, which shortens the diffusion distance for Li + ions and allows the rapid kinetics of Li + ions diffusion. This work provides a simple and efficacious synthesis method, which can be applied to the rational design and preparation of other layered cathode materials for high‐performance lithium‐ion batteries.