Lithium-conductive LiNbO3 coated high-voltage LiNi0.5Co0.2Mn0.3O2 cathode with enhanced rate and cyclability

Yu, Haifeng; Wang, Shouliang; Hu, Yanjie; He, Guanjie; Bao, Le Quoc; Parkin, Ivan P.; Jiang, Hao

doi:10.1016/j.gee.2020.09.011

Cited by 57 publications

(46 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Due to the analogous to ionic radius of Ni 2+ (0.69 Å) and Li + (0.76 Å), the cation mixing in which Ni ions are located in the Li layer occurs easily, which can result in capacity loss and poor rate capability. As shown in Figure 3B, the C 1s (289.9 eV) peak represents carbonate compound (Li 2 CO 3 ), which generates HF or LiF, which causes cell deterioration and highly reduces the electrochemical performance of the active material 40 . The intensity of the corresponding peak decreases sharply from 38% to 28% after the 5 wt% LNO coating, suggesting that the residual lithium salt was effectively relieved.…”

Section: Results and Disscussionmentioning

confidence: 99%

“…38 The LNO-coating layer can reduce the polarization during continuous cycling by preventing the corrosion of the electrolyte and stabilizing the crystal structure. 40 As a result, the 1 wt% LNO-LNCM electrode shows improved cycling stability after the 60 C storage test by solving the In Figure 7C, the Nyquist plot with an equivalent circuit was acquired using EIS before and after the 60 C storage test for each cathode. The first semicircle in the high-frequency region represents the CEI impedance (R CEI ), and the large semicircle in the region between the high and low frequencies is related to the charge-transfer impedance (R ct ).…”

Section: Electrochemical Measurementsmentioning

confidence: 99%

See 1 more Smart Citation

Polydopamine‐induced nano‐coating layer for high stability of nickel‐rich cathode in secondary batteries

Lee

Park

Seok

et al. 2022

Intl J of Energy Research

View full text Add to dashboard Cite

High-Ni layered-oxide cathodes are the most prospective cathode materials for next-generation Li-ion batteries (LIBs) in electric vehicles (EVs) owing to their high specific capacity. However, High-Ni layered-oxide cathode materials exhibit inferior cyclability and low thermal stability owing to the side reaction between Ni 4+ and the electrolytes. To solve these surface-related problems, we proposed a strategy for forming LiNbO 3 (LNO)-with outstanding thermal stability and ionic conductivity-on a Ni-rich layered-oxide surface using polydopamine (PDA). The PDA formed on the transition metal hydroxide surface has copious catechol OH groups, which attract the Nb ions in the solution to form a LNO coating layer during the calcination process. The LiNi 0.8 Co 0.1 Mn 0.1 O 2 (pristine LNCM) electrode experiences enormous degradation when cycled after being subjected to severe conditions-such as a full charge and a 60 C storage test-but the LiNbO 3 -coated LNCM (LNO-LNCM) electrode exhibits particularly stable cycling performance. Furthermore, differential scanning calorimetry (DSC) results exhibited that the LNO coating notably ameliorated the thermal stability of the cathode material. As a result, our experimental results suggest that the development of cathode materials that can withstand greatly oxidized states and high-temperature environments is achievable.cathode materials, high-Ni layered-oxides, LiNbO 3 , lithium-ion batteries, polydopamine | INTRODUCTIONLithium-ion batteries (LIBs) have been used in diverse fields involving mobile devices and electric vehicles (EVs)-owing to their high operating voltage, high energy density, superior cyclability, and low selfdischarge rate. 1,2 However, current LIBs have technical limitations, including problems related to cost, durability, and mileage. In particular, the cathode of LIBs has many problems, including high price, low capacity, poor cycle life, and deterioration complications. 3,4 Accordingly, recent research on cathode materials has focused on refining and developing new cathode materials. 5,6 Across the various cathode materials, High-Ni layered-oxide cathodes have recently been in the spotlight because they have high energy density, high theoretical capacity ($200 mAh g À1 ), and a comparatively high operating voltage. 7,8 Recently, researchers have

show abstract

Section: Results and Disscussionmentioning

confidence: 99%

Section: Electrochemical Measurementsmentioning

confidence: 99%

Polydopamine‐induced nano‐coating layer for high stability of nickel‐rich cathode in secondary batteries

Lee

Park

Seok

et al. 2022

Intl J of Energy Research

View full text Add to dashboard Cite

show abstract

“…Studies have certified that the surface coating could reduce the unwanted side reactions between the electrode and electrolyte and alleviate the dissolution of transition metals during de-/lithiation. , Especially, fast ionic conductors (such as Li 4 Ti 5 O 12 , Li 2 ZrO 3 , Li 4 SiO 4 , LiNbO 3 , etc.) not only serve as a protective layer for cathode materials − but also accelerate the diffusion of lithium ions and improve the rate performance of Ni-rich cathode materials. Hence, it is vital to maximize the synergetic effect of bulk doping and surface coating for advanced Ni-high cathode materials.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Surface and Crystal Stability of the Ni-High NCA Cathode for High-Energy and Durable Lithium-Ion Batteries

Zhu

et al. 2022

Ind. Eng. Chem. Res.

Self Cite

View full text Add to dashboard Cite

The promising LiNi 0.92 Co 0.05 Al 0.03 O 2 (NCA) cathode materials have become attractive recently for high-energy-density lithium-ion batteries (LIBs), but they suffer from severe capacity fade due to structure degradation and interface instability. Herein, a dual-modification strategy of Nb doping and Li 4 SiO 4 coating is employed to consolidate the surface and crystal stability of NCA. The Nb doping could suppress the anisotropic volume change and alleviate the generation of microcracks. Also, the Li 4 SiO 4 coating layer effectively accelerates the Li-ion transfer and protects the NCA surface from electrolyte attack. These advantages make the dual-modified NCA exhibit a high specific capacity of 199.2 mA h g −1 at 1 C with a capacity retention of 93.3% after 100 cycles. It delivers a high capacity of 160.0 mA h g −1 at 10 C, much higher than the pristine NCA (138.2 mA h g −1 ). The structure−performance relationship has been discussed. This work may provide guidance to modify Ni-high cathode materials for enhancing the high-energy and cyclic performance of LIBs.

show abstract

“…Various strategies such as conductive carbon coating and cation doping have been implemented to overcome the above-mentioned problems. 9,13–15 Carbon coating is a particularly efficient method to enhance the electronic conductivity. Additionally, several carbon sources, such as sucrose, fulvic acid, chitosan and citric acid, have been employed in the preparation of Li 2 MTi 3 O 8 /C composites.…”

mentioning

confidence: 99%

Optimizing the rate performance and cycle life of Li₂ MTi₃O₈ (M = Mn, Co, Zn)/CNTs for lithium-ion battery anodes by constructing a one-dimensional carbon-based hybrid structure

et al. 2022

View full text Add to dashboard Cite

show abstract

Lithium-conductive LiNbO3 coated high-voltage LiNi0.5Co0.2Mn0.3O2 cathode with enhanced rate and cyclability

Cited by 57 publications

References 43 publications

Polydopamine‐induced nano‐coating layer for high stability of nickel‐rich cathode in secondary batteries

Polydopamine‐induced nano‐coating layer for high stability of nickel‐rich cathode in secondary batteries

Enhancing Surface and Crystal Stability of the Ni-High NCA Cathode for High-Energy and Durable Lithium-Ion Batteries

Optimizing the rate performance and cycle life of Li₂ MTi₃O₈ (M = Mn, Co, Zn)/CNTs for lithium-ion battery anodes by constructing a one-dimensional carbon-based hybrid structure

Contact Info

Product

Resources

About

Lithium-conductive LiNbO3 coated high-voltage LiNi0.5Co0.2Mn0.3O2 cathode with enhanced rate and cyclability

Cited by 57 publications

References 43 publications

Polydopamine‐induced nano‐coating layer for high stability of nickel‐rich cathode in secondary batteries

Polydopamine‐induced nano‐coating layer for high stability of nickel‐rich cathode in secondary batteries

Enhancing Surface and Crystal Stability of the Ni-High NCA Cathode for High-Energy and Durable Lithium-Ion Batteries

Optimizing the rate performance and cycle life of Li2 MTi3O8 (M = Mn, Co, Zn)/CNTs for lithium-ion battery anodes by constructing a one-dimensional carbon-based hybrid structure

Contact Info

Product

Resources

About

Optimizing the rate performance and cycle life of Li₂ MTi₃O₈ (M = Mn, Co, Zn)/CNTs for lithium-ion battery anodes by constructing a one-dimensional carbon-based hybrid structure