Correction: Enhanced structural stability and overall conductivity of Li-rich layered oxide materials achieved by a dual electron/lithium-conducting coating strategy for high-performance lithium-ion batteries

Gao, Dan; Zeng, Zhisen; Mi, Hongwei; Sun, Lingna; Ren, Xiangzhong; Zhang, Peixin; Li, Yongliang

doi:10.1039/d1ta90073k

Cited by 5 publications

(1 citation statement)

References 44 publications

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“…It is recognized that the severe capacity fading is mainly caused by transition-metal (TM) migration, which results in structural evolution from a layered to a spinel or a rock salt phase. − Three types of modification measures such as surface coating, morphology control, and element doping are mostly explored. Li-ion conductors, − metal fluorides, − phosphates, , and metal oxides ,− were reported to improve the cycle performance effectively by suppressing structural phase transformations from layered to a spinel structure and alleviating the side reactions with the electrolyte. However, little is reported about the effective ways of escalating the capacity of HNLO.…”

Section: Introductionmentioning

confidence: 99%

Lithium Antievaporation-Loss Engineering via Sodium/Potassium Doping Enables Superior Electrochemical Performance of High-Nickel Li-Rich Layered Oxide Cathodes

Mao

Tan

Guo

et al. 2022

ACS Appl. Mater. Interfaces

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Low-cost Mn- and Li-rich layered oxides suffer from rapid voltage decay, which can be improved by increasing the nickel content to derive high nickel Li-rich layered oxides (HNLO) but is normally accompanied by reduced capacity and inferior cycling stability. Herein, Na or K ions are successfully doped into the lattice of high nickel Li-rich Li1.2–x M x Ni0.32Mn0.48O2 (M = Na, K) layered oxides via a facile expanded graphite template-sacrificed approach. Both Na- and K-doped samples exhibit excellent rate capability and cycling stability compared with the un-doped one. The Na-doped sample shows a capacity retention of 93% after 200 cycles at 1C, which is quite outstanding for HNLO. The greatly improved electrochemical performances are attributed to the increased effective Li content in the lattice via Li antievaporation-loss engineering, the expanded Li slab, the pillaring effect, the increased C2/m component, and the improved electronic conductivity. Different performances by the introduction of sodium and potassium ions may be ascribed to their different ionic radii, which give rise to their different doping behaviors and threshold doping amounts. This work provides a new idea of enhancing electrochemical performance of HNLO by doping proper alien elements to increase the lattice lithium content effectively.

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Section: Introductionmentioning

confidence: 99%

Lithium Antievaporation-Loss Engineering via Sodium/Potassium Doping Enables Superior Electrochemical Performance of High-Nickel Li-Rich Layered Oxide Cathodes

Mao

Tan

Guo

et al. 2022

ACS Appl. Mater. Interfaces

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Multifunctional Surface Construction for Long‐Term Cycling Stability of Li‐Rich Mn‐Based Layered Oxide Cathode for Li‐Ion Batteries

Yan

Shao

Yao

et al. 2022

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Li‐rich Mn‐based layered oxides (LMLOs) are promising cathode material candidate for the next‐generation Li‐ion batteries (LIBs) of high energy density. However, the fast capacity fading and voltage decay as well as low Coulombic efficiency caused by irreversible oxygen release and phase transition during the electrochemical process hinder their practical application. To solve these problems, in the present study, a multifunctional surface construction involving a coating layer, spinel‐layered heterostructure, and rich‐in oxygen vacancies is successfully conducted by a facile thermal reduction of the LMLO particles with potassium borohydride (KBH4) as the reducing agent. The multifunctional surface structure plays synergistic effects on suppressing the interface side reaction, reducing the dissolution of transition metal, increasing electron conductivity and lithium diffusion rate. As a result, electrochemical performances of the LMLO cathode are effectively enhanced. With optimization of the addition of KBH4, the electrode delivers a reversible capacity of 280 mAh g−1 at 0.1 C, which maintains after 100 cycles. The capacity retention with respect to the initial capacity is as high as 98% at 1 C after 400 cycles. The present work provides insights into designing a highly effective functional surface structure of LMLO cathode materials for high‐performance LIBs.

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Regulate the lattice oxygen activity and structural stability of lithium-rich layered oxides by integrated strategies

Yuan

Zhang

Song

et al. 2022

Chemical Engineering Journal

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Correction: Enhanced structural stability and overall conductivity of Li-rich layered oxide materials achieved by a dual electron/lithium-conducting coating strategy for high-performance lithium-ion batteries

Cited by 5 publications

References 44 publications

Lithium Antievaporation-Loss Engineering via Sodium/Potassium Doping Enables Superior Electrochemical Performance of High-Nickel Li-Rich Layered Oxide Cathodes

Lithium Antievaporation-Loss Engineering via Sodium/Potassium Doping Enables Superior Electrochemical Performance of High-Nickel Li-Rich Layered Oxide Cathodes

Multifunctional Surface Construction for Long‐Term Cycling Stability of Li‐Rich Mn‐Based Layered Oxide Cathode for Li‐Ion Batteries

Regulate the lattice oxygen activity and structural stability of lithium-rich layered oxides by integrated strategies

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