Enhanced Electrochemical Performance of Ni-Rich Cathode Materials with Li1.3Al0.3Ti1.7(PO4)3 Coating

Qu, Xingyu; Yu, Zhenlu; Ruan, Dingshan; Dou, Aichun; Su, Mingru; Zhou, Yu; Liu, Yunjian; Chu, Dewei

doi:10.1021/acssuschemeng.9b05539

Cited by 143 publications

(45 citation statements)

References 69 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…is the cross-sectional area of the electrode, n is the electron transfer number, F (96500 C•mol -1 ) is the Faraday constant, C (mol•cm -3 ) is the concentration of lithium ion in the electrode, σ is Warburg factor, the calculation formula is as follows 28 .…”

Section: Resultsmentioning

confidence: 99%

Diffusion coefficient analysis of aluminum electrolysis spent cathode as anode material for lithium-ion battery

Huang

Peng

et al. 2022

Ionics

View full text Add to dashboard Cite

The aluminum electrolysis spent cathode (SC) was treated by hydrothermal method and used as anode material for lithium-ion battery. The purified SC material shows excellent electrochemical performance. In order to understand the diffusion behavior of Li + in the SC electrode, the diffusion coefficient of Li + in the SC electrode was systematically analyzed by galvanostatic intermittent titration technique (GITT), cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS). The results show that the diffusion coefficient (D Li + ) of Li + in SC electrode is calculated by CV is 2.2292×10 -11 cm 2 •s -1 , which is calculated by GITT and EIS ranges are 4.2286×10 -13 -2.9667×10 -10 cm 2 •s -1 , 4.05×10 -13 -3.87×10 -12 cm 2 •s -1 , respectively. SC electrode exhibits better Li + diffusion kinetics compared to commercial graphite (CG). In addition, the full cell of LiNi0.5Co0.2Mn0.3O2/SC also shows excellent cycle performance. After 80 cycles at 1 C (1 C=172 mA•g -1 ), the specific discharge capacity of LiNi0.5Co0.2Mn0.3O2/SC full-cell can reach 94.7 mAh•g -1 , and the capacity retention can reach 98.13%. The fast lithium-ion diffusion rate and high discharge capacity provide a feasible direction for the high value utilization of aluminum electrolysis spent cathode.

show abstract

Section: Resultsmentioning

confidence: 99%

Diffusion coefficient analysis of aluminum electrolysis spent cathode as anode material for lithium-ion battery

Huang

Peng

et al. 2022

Ionics

View full text Add to dashboard Cite

show abstract

“…The HRTEM ( Figure a,b) of bare LNMO after cycling reveals short‐range fringes with lattice spacing of ≈0.24 and 0.21 nm, which are originated from the (111) plane and (200) plane of the rock‐salt structure (Li 1− x Ni x O/Ni x O, space group of Fm3m ). [ 30 ] These irreversible phase changes are led by the transition‐metal dissolution due to the corrosion of HF. Contrarily, the GDY protection layer greatly increases the interfacial stability (Figure 6c,d) and the long‐range well‐paralleled fringes belonging to the (311) and (111) planes of LNMO are clearly observed.…”

Section: Resultsmentioning

confidence: 99%

High Voltage‐Stabilized Graphdiyne Cathode Interface

Chang

Wang

Zuo

et al. 2021

Small

View full text Add to dashboard Cite

Suppressing the irreversible interfacial reactions is an important scientific bottleneck in the development of stable high‐energy‐density lithium‐ion battery. The interfacial chemistry of graphdiyne (GDY) on the high‐voltage cathode of LiNi0.5Mn1.5O4 (LNMO) shows a very interesting process, in which the sp‐hybridization carbon atoms chemically scavenge the hydrofluoric acid (HF) and in situ form the fluorinated GDY interface. It first turns the harmful HF into profit, and greatly enhances the interfacial stability and restrains the side reaction on the cathode under high working voltage. The GDY‐coated LNMO cathode obviously alleviates the electrolyte degradation, achieves high Coulombic efficiency and reliability. Due to atomic‐level selectivity and chemical trapping of HF by GDY, it effectively suppresses the dissolution of Mn, Ni elements. These results highlight the unparalleled advantages of GDY in the formation of high stable interfaces and protection of high‐energy‐density electrodes.

show abstract

“…As a result of the anisotropic lattice volume change, the microcrack propagation is more serious in those Ni-rich NMC cathodes (Liu et al, 2018;Fan et al, 2020). Several strategies, such as concentration gradient structure and grain boundary coating, have been developed to improve the structural stability of the polycrystalline NMC cathode (Kim et al, 2018;Ouyang et al, 2018;Su et al, 2019;Lee et al, 2020;Qu et al, 2020;Zou et al, 2020); nevertheless, the demands for higher volumetric energy density and cycling stability are still unsatisfied.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Manipulation of Single-Crystalline Lithium Nickel Manganese Cobalt Oxide Cathodes: A Review of Growth Mechanism

et al. 2020

View full text Add to dashboard Cite

Lithium nickel manganese cobalt oxide (NMC) cathodes are of great importance for the development of lithium ion batteries with high energy density. Currently, most commercially available NMC products are polycrystalline secondary particles, which are aggregated by anisotropic primary particles. Although the polycrystalline NMC particles have demonstrated large gravimetric capacity and good rate capabilities, the volumetric energy density, cycling stability as well as production adaptability are not satisfactory. Well-dispersed single-crystalline NMC is therefore proposed to be an alternative solution for further development of high-energy-density batteries. Various techniques have been explored to synthesize the single-crystalline NMC product, but the fundamental mechanisms behind these techniques are still fragmented and incoherent. In this manuscript, we start a journey from the fundamental crystal growth theory, compare the crystal growth of NMC among different techniques, and disclose the key factors governing the growth of single-crystalline NMC. We expect that the more generalized growth mechanism drawn from invaluable previous works could enhance the rational design and the synthesis of cathode materials with superior energy density.

show abstract

Enhanced Electrochemical Performance of Ni-Rich Cathode Materials with Li_1.3Al_0.3Ti_1.7(PO₄)₃ Coating

Cited by 143 publications

References 69 publications

Diffusion coefficient analysis of aluminum electrolysis spent cathode as anode material for lithium-ion battery

Diffusion coefficient analysis of aluminum electrolysis spent cathode as anode material for lithium-ion battery

High Voltage‐Stabilized Graphdiyne Cathode Interface

Synthesis and Manipulation of Single-Crystalline Lithium Nickel Manganese Cobalt Oxide Cathodes: A Review of Growth Mechanism

Contact Info

Product

Resources

About