Magnesium doped LiNi Mn Co O2 cathode- structural properties

Jeevanantham, B.; Sarathkumar, P.; Kavita, S.; Shobana, M.K.

doi:10.1016/j.apsadv.2022.100350

Cited by 6 publications

(1 citation statement)

References 30 publications

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“…However, rapid capacity and voltage fade, poor thermal stability, and irreversible reactions at the electrode|electrolyte interfaces still affect their application in today's and next-generation Li-ion batteries [8][9][10] . Effective optimization strategies encompass various techniques, such as elemental cation doping (e.g., Mg 11,12 , Al [13][14][15] , Ti 15,16 , Zr 17,18 ), and surface coating (B [19][20][21] , PO 4 3-22 , Cl 23 ). Among others, boron coating has been a commonly employed method to considerably enhance the performance of NCMs 20,21 .…”

Section: Introductionmentioning

confidence: 99%

Insights into Homogenous Bulk Boron Doping at the Tetrahedral Site of NCM811 Cathode Materials: Structure Stabilization by Inductive Effect on TM-O-B Bonds

Kleiner,

Ying,

Teng

et al. 2023

Preprint

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Rechargeable lithium-ion batteries (LIBs) are critical for enabling sustainable electrochemical energy storage. The capacity of cathode materials is a major limiting factor in the LIB performance, and doping has emerged as an effective strategy for enhancing the electrochemical properties of nickel-rich layered oxides such as NCM811. In this study, boron was successfully incorporated onto a tetrahedral site of NCM811 through a co-precipitation method using a Couette-Taylor Flow Reactor (CTFR). The outcome of this homogeneous bulk boron incorporation onto a tetrahedral site led to an inductive effect on TM (transition metal)-O-B bonds, resulting in a delay of structural collapse and a decrease in oxygen release. Consequently, these changes culminated in an enhancement of cycling performance, translating to an initial specific capacity of 210 mAh g− 1 and a 95.3% capacity retention after 100 cycles. These interesting findings deepen our understanding of boron doping and shed light on the design of better lithium cathode materials on an applicable scale.

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