Destructive effects of transitional metal ions on interfacial film of carbon anode for lithium-ion batteries

Zhang, Jingjing; Li, Wenbo; Wang, Jie; Wang, Peng; Sun, Jing; Wu, Shumin; Dong, Hong; Ding, Hao; Zhao, Dongni; Li, Shiyou

doi:10.1016/j.electacta.2022.140334

Cited by 10 publications

(6 citation statements)

References 42 publications

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“…With cycling to the 10th and 25th cycles, the increases of SEI resistance and charge transfer resistance for the NNM/CE-5 electrode were much smaller than those for NNM, indicating that the metal ions dissolution was suppressed in NNM/CE-5, leading to a higher Na + mobility. 70,71 Therefore, the suppression of oxygen release through CeO 2−x surface modification favored not only the alleviation of voltage fading but also the improvement of Na + kinetics, rate capability and cycling stability of the NNM cathode.…”

Section: Resultsmentioning

confidence: 99%

Ceria Heterostructure Suppresses Oxygen Release of Na-Ion Battery Cathode Materials

Zhang,

Chen,

Zhao

et al. 2024

ACS Sustainable Chem. Eng.

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Oxygen anionic redox in transition metal (TM) layered oxide cathodes can offer large extra capacity at high operating voltage. However, this oxygen-involved chemical evolution is usually accompanied by lattice oxygen release, resulting in metal dissolution, voltage fading, and capacity decay. Herein, ultrathin ceria heterostructures were constructed at the surface of the Na2/3Ni1/3Mn2/3O2 (NNM) cathode, which shared similar hexagonal atomic arrangements with the Ni/Mn layer. This phase-compatible combination could form Ce–O–TM bonding at the NNM/ceria interphase for the stabilization of lattice oxygen anions, which effectively suppresses the oxygen release in the deep desodiated state and alleviates the Ni/Mn metal dissolution. By being composited with 5% ultrathin CeO2–x , the oxygen release behavior of the NNM cathode has been successfully suppressed and the modified NNM/CE-5 cathode displays highly competitive cycling stability (75.3% capacity retention after 100 cycles at 0.5 C), excellent voltage stability and high-rate capability. This work provides a successful strategy to construct strong interphase bonding for cathode materials to stabilize anionic redox at a high operating voltage.

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Section: Resultsmentioning

confidence: 99%

Ceria Heterostructure Suppresses Oxygen Release of Na-Ion Battery Cathode Materials

Zhang,

Chen,

Zhao

et al. 2024

ACS Sustainable Chem. Eng.

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“…Currently, several methods have been proposed to inhibit the negative impact of Mn 2+ ions on the cycling performance of LIBs. Electrolyte engineering, including the employment of high-concentration electrolytes (HCEs) and electrolyte additives, as well as the alteration of lithium salt composition, is one of the important means. − In these approaches, HCEs have shown more significant inhibition effects. However, previous studies have mainly attributed the inhibitory effect of HCEs on SEI formation, neglecting the solvation structure of the electrolyte itself.…”

Section: Introductionmentioning

confidence: 99%

Inhibition Mechanism of Weakly Solvating Electrolyte against Capacity Fade Caused by Mn (II) Deposition in Lithium-Ion Batteries

Zhang,

Sun,

Cui

et al. 2024

ACS Sustainable Chem. Eng.

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The dissolution and deposition of Mn (II) are considered to be non-negligible factors of capacity fade in lithium-ion batteries. The high-concentration electrolytes (HCEs) can inhibit the deposition of Mn (II), but the high cost and viscosity limit their practical application. Herein, the weakly solvating solvent tetrahydrofuran (THF) is selected to regulate the solvation structure, inspired by the inhibition mechanism of HCEs. We find that the high proportion of contact ion pairs and aggregates formed in THF-based weakly solvating electrolyte brings about a significant increase in the lowest unoccupied orbital value of the solvation structure of Mn (II) and achieves almost 100% capacity retention during the first 100 cycles at the charge−discharge rate of 0.5 C. Moreover, the binding energy between Mn (II) and other components in the solvation structure remarkably increases due to more anions coordinating with Mn (II). This immobilizes Mn (II) in the bulk electrolyte and inhibits its deposition on the anode. Besides, benefiting from anion-rich solvation structure in weakly solvating electrolyte, a stable and uniform solid electrolyte interphase rich in inorganics is formed. It not only suppresses the reduction and deposition of Mn (II), but also promotes the migration kinetics of Li + across the interfaces, consequently inhibiting the capacity fade. This study provides a new strategy for designing electrolyte systems with low viscosity, low cost, and high resistance to Mn (II) deposition.

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“…However, energy storage technology still faces numerous challenges. Lithium-ion batteries (LMBs) have been widely explored because of their long service life and excellent energy storage performance. − However, traditional commercial liquid electrolyte lithium batteries have many safety risks, such as flammability and explosiveness, and these problems hinder the further development of lithium batteries. − Compared with liquid electrolytes, solid-state electrolytes (SSEs) exhibit excellent chemical stability and safety properties . Among them, PEO, polyvinylidene fluoride (PVDF), and other polymer electrolytes have good contact between the lithium anode and the cathode, as well as high mechanical strength and good flexibility .…”

Section: Introductionmentioning

confidence: 99%

Spatial Distance Effect of Negative Ion–Porous Organic Polymers on the Electrochemical Properties of Composite Solid Electrolytes

Wang,

Liu,

Tai

et al. 2024

ACS Appl. Polym. Mater.

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Among composite solid electrolytes, the addition of fillers could restrain the crystallization of the molecular chain of poly(ethylene oxide) (PEO). However, the impact of the spatial distance on the electrochemical properties remains unstudied. This paper uses linear aldehydes with carbon chain lengths of 1 and 7 to synthesize polyaminal-formaldehyde (PAN-FDE) and polyaminal-heptaldehyde (PAN-HDE) with melamine as the filler, which can reduce the crystallinity of the matrix and improve the ionic conductivity. Besides, the ionic conductivity of the PAN-FDE electrolyte membrane can reach 8.433 × 10 −5 S•cm −1 at room temperature by adding 1% PAN-FDE with PEO mass, which increases by 2 orders of magnitude for a poly(ethylene oxide)-lithium trifluoromethanesulfonimide (PEO-LiTFSI) electrolyte membrane. In addition, the electrochemical window of PAN-FDE electrolytes is 0.57 V higher than that of PEO-LiTFSI electrolytes, which can be attributed to the formation of hydrogen bonds between numerous N−H groups in PAN-FDE and ether−oxygen in PEO. In symmetric cells, Li/PAN-FDE/Li cells show a lower initial overpotential of 62 mV and can cycle steadily for 1600 h without a short-circuit, while PEO-LiTFSI cells show a high initial overpotential of 457 mV, and short-circuit occurred at 180 h. In this paper, we contribute another way to optimize the electrochemical properties of composite solid electrolytes by changing the spatial distance.

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Destructive effects of transitional metal ions on interfacial film of carbon anode for lithium-ion batteries

Cited by 10 publications

References 42 publications

Ceria Heterostructure Suppresses Oxygen Release of Na-Ion Battery Cathode Materials

Ceria Heterostructure Suppresses Oxygen Release of Na-Ion Battery Cathode Materials

Inhibition Mechanism of Weakly Solvating Electrolyte against Capacity Fade Caused by Mn (II) Deposition in Lithium-Ion Batteries

Spatial Distance Effect of Negative Ion–Porous Organic Polymers on the Electrochemical Properties of Composite Solid Electrolytes

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