Enhanced cycling stability and rate performance of Co-doped and La2O3-coated LiNi0.9Mn0.1O2 toward power battery

Peng, Jia-Qi; Wei, Yuan-Yuan; Liu, Dong-Ming; Li, Yun; Hu, Bin; Huang, Bin; Yang, Jian-Wen; Xiao, Shun-Hua; Wang, Ren-Heng

doi:10.1007/s12598-023-02470-2

Cited by 9 publications

(3 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure j and Table S2 show the comparison of the cycling performance of the optimized NM90-1%AB material with related nickel-rich cathode materials (Ni ≥ 0.9) at different current densities and cycles in recent years. ,− It is very intuitive to find that the cycling stability and rate performances of the optimized NM90-1%AB material are superior to those reported materials, highlighting the outstanding advantages of B/Al codoping/coating modification.…”

Section: Resultsmentioning

confidence: 97%

“…where V M represents the molar volume, m B and M B denote the mass and molecular weight of the active substance, respectively, S is the electrode area, τ is the duration of the single current pulse, ΔE τ is the transient voltage difference after the current pulse, and ΔE s is the steady-state voltage difference after 30 min of relaxation. 58 The parameters ΔE s , ΔE τ , and τ in the above equation can be extracted from the single pulse GITT curves in Figure 6c and d. Figure 6e and f shows the square root of the pulse time (τ 1/2 ) versus discharge voltage (V), which shows a good linear relationship between τ 1/2 and V. Additionally, the single-pulse GITT curves at the beginning and end of the charging process, shown in Figure S4, indicate that the voltage stabilizes after 30 min of relaxation at various stages of charging.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…Then, starting from 4.3 V, discharges are carried out at 0.1 C for 10 min each, followed by 30 min of relaxation until the voltage drops to 2.7 V to end the whole testing process. The Li + diffusion coefficient ( D Li + ) is calculated using the following equation: D Li + = 4 π τ true[ ( m B V M M B S ) ( Δ E s Δ E τ ) true] 2 false( τ ≪ L 2 / D false) where V M represents the molar volume, m B and M B denote the mass and molecular weight of the active substance, respectively, S is the electrode area, τ is the duration of the single current pulse, ΔE τ is the transient voltage difference after the current pulse, and ΔE s is the steady-state voltage difference after 30 min of relaxation . The parameters ΔE s , ΔE τ , and τ in the above equation can be extracted from the single pulse GITT curves in Figure c and d. Figure e and f shows the square root of the pulse time (τ 1/2 ) versus discharge voltage (V), which shows a good linear relationship between τ 1/2 and V .…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

B/Al Codoped/Coated Ultra-High Nickel Cobalt-Free Material with Excellent High Voltage/Rate Cycle Stability

Zhang,

Huang,

Tang

et al. 2024

ACS Sustainable Chem. Eng.

Self Cite

View full text Add to dashboard Cite

Ultrahigh nickel cobalt-free cathode materials have high energy density and are very promising materials for application in lithium-ion batteries. However, they face severe challenges of overall degradation in the interface/lattice structure stability during charge and discharge, resulting in poor safety and a short cycle life. In this paper, the B/Al codoping/coating is applied to LiNi 0.9 Mn 0.1 O 2 (NM90). The LiAlO 2 /LiBO 2 coating formed in situ by B/Al and surface residual alkali helps to reduce O 2 evolution and restrain side reactions on surface. The B/Al codoping resulting from hightemperature thermal diffusion significantly expands the layer spacing, thus improving the Li + diffusion rate. After 300 cycles, the optimized NM90-1% AB material achieves 86.5% capacity retention (1 C, 2.7− 4.3 V, 25 °C) compared to 68.5% for the pristine NM90 material. Furthermore, its capacity retention can reach 84.7% after 300 cycles at 4.4 V and 5 C, which is much higher than the 58.9% of NM90 material. Even at 10 C, the specific discharge capacity of the NM90-1% AB material can still reach 155.1 mA h/g, but the NM90 material only has 142.8 mA h/g. It is obvious that the B/Al codoped/coated strategy can enhance the interface/lattice structural stability of NM90 material.

show abstract

Section: Resultsmentioning

confidence: 97%

Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

B/Al Codoped/Coated Ultra-High Nickel Cobalt-Free Material with Excellent High Voltage/Rate Cycle Stability

Zhang,

Huang,

Tang

et al. 2024

ACS Sustainable Chem. Eng.

Self Cite

View full text Add to dashboard Cite

show abstract

In Situ Constructed Spinel Layer Stabilized Upcycled LiCoO₂ for High Performance Lithium‐Ion Batteries

Sun,

Fan,

Wang

et al. 2024

Small

View full text Add to dashboard Cite

With ever‐increasing requirements for cathodes in the lithium‐ion batteries market, an efficiency and eco‐friendly upcycling regeneration strategy is imperative to meet the demand for high‐performance cathode materials. Herein, a facile, direct and upcycling regeneration strategy is proposed to restore the failed LiCoO2 and enhance the stability at 4.6 V. Double effects combination of relithiation and outside surface reconstruction are simultaneously achieved via a facile solid‐phase sintering method. The evolution process of the Li‐supplement and grain‐recrystallization is systematically investigated, and the high performance of the upcycled materials at high voltage is comprehensively demonstrated. Thanks to the favorable spinel LiCoxMn2−xO4 surface coating, the upcycled sample displays outstanding electrochemical performance, superior to the pristine cathode materials. Notably, the 1% surface‐coated LiCoO2 achieves a high discharge‐specific capacity of 207.9 mA h g−1 at 0.1 C and delivers excellent cyclability with 77.0% capacity retention after 300 cycles. Significantly, this in situ created spinel coating layer can be potentially utilized for recycling spent LiCoO2, thus providing a viable, promising recycling strategy insights into the upcycling of degraded cathodes.

show abstract

In Situ Electrochemical Polymerization of Cathode Electrolyte Interphase Enabling High‐Performance Lithium Metal Batteries

Sun,

Yu,

et al. 2024

Small

View full text Add to dashboard Cite

Lithium metal batteries (LMBs) with high‐voltage nickel‐rich cathodes show great potential as energy storage devices due to their exceptional capacity and power density. However, the detrimental parasitic side reactions at the cathode electrolyte interface result in rapid capacity decay. Herein, a polymerizable electrolyte additive, pyrrole‐1‐propionic acid (PA), which can be in situ electrochemically polymerized on the cathode surface and involved in forming cathode electrolyte interphase (CEI) film during cycling is proposed. The formed CEI film prevents the formation of microcracks in LiNi0.8Co0.1Mn0.1O2 (NCM811) secondary particles and mitigates parasitic reactions. Additionally, the COO− anions of PA promote the acceleration of Li+ transport from cathode particles and increase charging rates. The Li||NCM811 batteries with PA in the electrolyte exhibit a high capacity retention of 83.83% after 200 cycles at 4.3 V, and maintain 80.88% capacity after 150 cycles at 4.6 V. This work provides an effective strategy for enhancing interface stability of high‐voltage nickel‐rich cathodes by forming stable CEI film.

show abstract

Enhanced cycling stability and rate performance of Co-doped and La2O3-coated LiNi0.9Mn0.1O2 toward power battery

Cited by 9 publications

References 48 publications

B/Al Codoped/Coated Ultra-High Nickel Cobalt-Free Material with Excellent High Voltage/Rate Cycle Stability

B/Al Codoped/Coated Ultra-High Nickel Cobalt-Free Material with Excellent High Voltage/Rate Cycle Stability

In Situ Constructed Spinel Layer Stabilized Upcycled LiCoO₂ for High Performance Lithium‐Ion Batteries

In Situ Electrochemical Polymerization of Cathode Electrolyte Interphase Enabling High‐Performance Lithium Metal Batteries

Contact Info

Product

Resources

About

Enhanced cycling stability and rate performance of Co-doped and La2O3-coated LiNi0.9Mn0.1O2 toward power battery

Cited by 9 publications

References 48 publications

B/Al Codoped/Coated Ultra-High Nickel Cobalt-Free Material with Excellent High Voltage/Rate Cycle Stability

B/Al Codoped/Coated Ultra-High Nickel Cobalt-Free Material with Excellent High Voltage/Rate Cycle Stability

In Situ Constructed Spinel Layer Stabilized Upcycled LiCoO2 for High Performance Lithium‐Ion Batteries

In Situ Electrochemical Polymerization of Cathode Electrolyte Interphase Enabling High‐Performance Lithium Metal Batteries

Contact Info

Product

Resources

About

In Situ Constructed Spinel Layer Stabilized Upcycled LiCoO₂ for High Performance Lithium‐Ion Batteries