The role of dopants in mitigating the chemo‐mechanical degradation of Ni‐rich cathode: A critical review DOI Creative Commons
Imesha Rambukwella, Hanisha Ponnuru, Cheng Yan

et al.

EcoEnergy, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 20, 2025

Abstract Ni‐rich cathodes are more promising candidates to the increasing demand for high capacity and ability operate at voltages. However, Ni content creates a trade‐off between energy density cycling stability, mainly caused by chemo‐mechanical degradation. Oxygen evolution, cation mixing, rock salt formation, phase transition, crack formation contribute degradation process. To overcome this problem, strategies such as doping, surface coating, core‐shell structures have been employed. The advantage of doping is engineer cathode surface, structure, particle morphology simultaneously. This review aims summarize recent advances in understanding mechanism role different dopants enhancing thermal stability overall electrochemical performance. pinning pillaring effects on suppressing oxygen transition introduced. It found that higher ionic radii enable reside particles, preserving refining suppress formation. Finally, effect Li ion diffusion, rate capability, long‐term discussed.

Language: Английский

Precision engineering of high-performance Ni-rich layered cathodes with radially aligned microstructure through architectural regulation of precursors DOI Creative Commons
Xin Zhou,

Feifei Hong,

Shuo Wang

et al.

eScience, Journal Year: 2024, Volume and Issue: unknown, P. 100276 - 100276

Published: May 1, 2024

Microstructure engineering serves as a potent approach to counteract the mechanical deterioration of Ni-rich layered cathodes, stemming from anisotropic strain during Li+ (de)intercalation. However, pressing challenge persists in devising direct method for fabricating radially aligned cathodes utilizing oriented hydroxide precursors. In this study, we synthesized LiNi0.92Co0.04Mn0.04O2 oxides boasting superior aligned, size-refined primary particles through combination strategic precipitation regulation and lithiation tuning. Elongated particles, achieved by stepwise control ammonia concentration pH particle growth, facilitate formation precursor particles. Leveraging our prepared cathode exhibits high discharge capacity 229 mAh g−1 at 0.05 C, alongside excellent cycle stability, retaining 93.3% after 200 cycles 0.5 C (30 °C) half cell, 86.4% 1000 1 full cell. Revisiting oxide underscores significance controlling maximize size perpendicular [001] attain suitable along high-temperature calcination, offering valuable insights synthesizing high-performance cathodes.

Language: Английский

Citations

25

Mechanism Behind the Loss of Fast Charging Capability in Nickel‐Rich Cathode Materials DOI

Nam‐Yung Park,

Myoung‐Chan Kim,

Sang‐Mun Han

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(12)

Published: Jan. 31, 2024

Fast charging technology for electric vehicles (EVs), offering rapid times similar to conventional vehicle refueling, holds promise but faces obstacles owing kinetic issues within lithium-ion batteries (LIBs). Specifically, the significance of cathode materials in fast has grown because Ni-rich cathodes are employed enhance energy density LIBs. Herein, mechanism behind loss capability during extended cycling is investigated through a comparative analysis with different microstructures. The results revealed that microcracks and resultant deterioration significantly compromised over cycling. When thick rocksalt impurity phases form throughout particles electrolyte infiltration via microcracks, limited kinetics Li

Language: Английский

Citations

23

Precise Regulation of Particle Orientation for Ni-Rich Cathodes with Ultra-Long Cycle Life DOI
Shuo Wang, Xin Zhou, Tian Zhao

et al.

Nano Energy, Journal Year: 2024, Volume and Issue: 129, P. 110008 - 110008

Published: July 15, 2024

Language: Английский

Citations

20

Uncovering mechanism behind tungsten bulk/grain-boundary modification of Ni-rich cathode DOI
Lingjun Li,

Qiheng Chen,

Mingzhu Jiang

et al.

Energy storage materials, Journal Year: 2025, Volume and Issue: 75, P. 104016 - 104016

Published: Jan. 7, 2025

Language: Английский

Citations

11

Unraveling 3d Transition Metal (Ni, Co, Mn, Fe, Cr, V) Ions Migration in Layered Oxide Cathodes: A Pathway to Superior Li‐Ion and Na‐Ion Battery Cathodes DOI Open Access
Shengnan He, Rui Zhang,

Xi Han

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 13, 2025

Abstract Li‐ion and Na‐ion batteries are promising systems for powering electric vehicles grid storage. Layered 3d transition metal oxides A x TMO 2 (A = Li, Na; TM metals; 0 < ≤ 2) have drawn extensive attention as cathode materials due to their exceptional energy densities. However, they suffer from several technical challenges caused by crystal structure degradation associated with ions migration, such poor cycling stability, inferior rate capability, significant voltage hysteresis, serious decay. Aiming tackle these challenges, this review provides an in‐depth discussion comprehensive understanding of the migration behaviors in . First, key thermodynamics kinetics that impact discussed, covering ionic radius, electronic configuration, arrangement, barrier. In particular, details provided regarding universal specific characteristics Ni, Co, Mn, Fe, Cr, V layered materials. Subsequently, impacts migrations on electrochemical performance emphasized terms fundamental science behind issues, strategies modulate advanced development summarized. Besides, characterization techniques probing present, like neutron diffraction (ND), scanning transmission electron microscopy (STEM), nuclear magnetic resonance (NMR), others. Finally, future directions regard comprehensively concluded. This offers valuable insights into basic design oxide batteries.

Language: Английский

Citations

3

One‐Step Surface‐to‐Bulk Modification of High‐Voltage and Long‐Life LiCoO2 Cathode with Concentration Gradient Architecture DOI Open Access
Yawen Yan,

Qiu Fang,

Xiaoxiao Kuai

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(1)

Published: Nov. 13, 2023

Abstract Raising the charging cut‐off voltage of layered oxide cathodes can improve their energy density. However, it inevitably introduces instabilities regarding both bulk structure and surface/interface. Herein, exploiting unique characteristics high‐valence Nb 5+ element, a synchronous surface‐to‐bulk‐modified LiCoO 2 featuring Li 3 NbO 4 surface coating layer, Nb‐doped bulk, desired concentration gradient architecture through one‐step calcination is achieved. Such multifunctional facilitates construction high‐quality cathode/electrolyte interface, enhances + diffusion, restrains lattice‐O loss, Co migration, associated layer‐to‐spinel phase distortion. Therefore, stable operation Nb‐modified half‐cell achieved at 4.6 V (90.9% capacity retention after 200 cycles). Long‐life 250 Wh kg −1 4.7 V‐class 550 pouch cells assembled with graphite thin anodes are harvested (both beyond 87% 1600 This modification strategy establishes technological paradigm to pave way for high‐energy density long‐life lithium‐ion cathode materials.

Language: Английский

Citations

28

Air-Stable High-Entropy Layered Oxide Cathode with Enhanced Cycling Stability for Sodium-Ion Batteries DOI

Jiajia Zhan,

Jiawen Huang, Zhen Li

et al.

Nano Letters, Journal Year: 2024, Volume and Issue: 24(32), P. 9793 - 9800

Published: Aug. 1, 2024

O3-type layered oxides have been extensively studied as cathode materials for sodium-ion batteries due to their high reversible capacity and initial sodium content, but they suffer from complex phase transitions an unstable structure during intercalation/deintercalation. Herein, we synthesize a high-entropy transition metal oxide, NaNi0.3Cu0.05Fe0.1Mn0.3Mg0.05Ti0.2O2 (NCFMMT), by simultaneously doping Cu, Mg, Ti into its layers, which greatly increase structural entropy, thereby reducing formation energy enhancing stability. The NCFMMT exhibits significantly improved cycling stability (capacity retention of 81.4% at 1C after 250 cycles 86.8% 5C 500 cycles) compared pristine NaNi0.3Fe0.4Mn0.3O2 (71% 100 1C), well remarkable air Finally, the NCFMMT//hard carbon full-cell deliver 103 mAh g–1 1C, with 83.8 maintained 300 81.4%).

Language: Английский

Citations

17

Inhibiting phase conversion and improving cyclic stability of Ni-rich layered oxide by high-valence element concentration gradient doping DOI

Ruijuan Wang,

Jiarui Chen,

Yixu Zhang

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 485, P. 149827 - 149827

Published: Feb. 21, 2024

Language: Английский

Citations

16

Surface reactivity versus microcracks in Ni-rich layered oxide cathodes: Which is critical for long cycle life? DOI
Xin Wang, Xin Zhou, Xiaohong Liu

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 488, P. 150795 - 150795

Published: March 28, 2024

Language: Английский

Citations

15

Two birds with one stone: One-pot concurrent Ta-doping and -coating on Ni-rich LiNi0.92Co0.04Mn0.04O2 cathode materials with fiber-type microstructure and Li+-conducting layer formation DOI

Yola Bertilsya Hendri,

Liang‐Yin Kuo, Manojkumar Seenivasan

et al.

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 661, P. 289 - 306

Published: Jan. 18, 2024

Language: Английский

Citations

12