Structural Unpredictability of a Cobalt‐Free Layered Cathode and Its Mitigation for Producing Reliable, Sustainable Batteries DOI
Geon‐Tae Park,

Myoung‐Chan Kim,

Min‐Su Kim

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 5, 2024

Abstract To advance the sustainable development of Li‐ion batteries, reducing Co content in Li[Ni x y (Mn or Al) (1– – ) ]O 2 has become essential, prompting exploration Co‐free Mn alternatives. Among promising solutions are layered cathodes with compositional concentration gradients, which offer significant potential. However, their unique microstructure and partitioning, key to performance, highly sensitive synthesis temperatures. Over‐sintering can lead structural unpredictability cathode materials detrimental effects on electrochemical properties. In this study, a stable oxide is developed by doping gradient 0.9 0.1 , high‐valence ions. This innovative strategy significantly reduces sensitivity calcination temperatures, minimizing nano‐ microstructural changes across broad temperature range (750–810 °C). The particle‐level gradation grain‐level heteroelement encapsulation contribute material's exceptional performance. Mo doping, trace amounts, plays pivotal role maintaining stability cathodes, enabling high‐potential (4.3 V vs graphite) suitable for practical battery applications.

Language: Английский

Insights into Cation Migration and Intermixing in Advanced Cathode Materials for Lithium‐Ion Batteries DOI
Shu Zhang, Zhuo Yang, Yong Lü

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown

Published: June 29, 2024

Abstract Cathode materials are the core components of lithium‐ion batteries owing to determination practical voltage and effective energy battery system. However, advanced cathodes have faced challenges related cation migration intermixing. In this review, study summarizes structural failure mechanisms due mixing cathodes, including Ni‐rich Li‐rich layered spinel, olivine, disordered rock‐salt materials. This review starts by discussing degradation caused intermixing in different focusing on electronic structure, crystal electrode structure. Furthermore, optimization strategies for inhibition rational utilization systematically encapsulated. Last but not least, remaining proposed perspectives highlighted future development cathodes. The accurate analysis using characterization, precise control material synthesis, multi‐dimensional synergistic modification will be key research areas provides a comprehensive understanding emerge as pivotal controllable factors further

Language: Английский

Citations

23
A 5 V ultrahigh energy density lithium metal capacitor enabled by the fluorinated electrolyte DOI
Lei Tan, Xing Huang,

Ti Yin

et al.

Energy storage materials, Journal Year: 2024, Volume and Issue: 71, P. 103692 - 103692

Published: Aug. 1, 2024

Language: Английский

Citations

13
Understanding and Design of Cathode–Electrolyte Interphase in High‐Voltage Lithium–Metal Batteries DOI

Wanxia Li,

Zixu He, Yulin Jie

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: June 10, 2024

Abstract The development of lithium–metal batteries (LMBs) has emerged as a mainstream approach for achieving high‐energy‐density energy storage devices. stability electrochemical interfaces plays an essential role in realizing stable and long‐life LMBs. Despite extensive comprehensive research on the lithium anode interface, there is limited focus cathode particularly regarding high‐voltage transition metal oxide materials. In this review, challenges associated with developing materials are first discussed. Characterization techniques understanding composition structure cathode–electrolyte interphase (CEI) then introduced. Subsequently, recent developments electrolyte design interface modification constructing CEI summarized. Finally, perspectives future trends This review can offer valuable guidance designing CEI, pushing forward

Language: Английский

Citations

9
Nano-rods in Ni-rich layered cathodes for practical batteries DOI Creative Commons
Geon‐Tae Park, Nam-Yung Park, Hoon‐Hee Ryu

et al.

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(23), P. 11462 - 11518

Published: Jan. 1, 2024

The nano-rod structure is a promising approach for developing high performance cathode materials. This review discusses cathodes' origin, physicochemical, and electrochemical properties their application in next-generation batteries.

Language: Английский

Citations

8
Tailoring Primary Particle Size Distribution to Suppress Microcracks in Ni-Rich Cathodes via Controlled Grain Coarsening DOI
Nam-Yung Park,

Sang-Mun Han,

Ji‐Hyun Ryu

et al.

ACS Energy Letters, Journal Year: 2024, Volume and Issue: 9(7), P. 3595 - 3604

Published: July 1, 2024

Language: Английский

Citations

4
Targeted doping enables multi-scale stress regulation for high reliable Ni-rich layered cathodes DOI

Qingrong Huang,

Zhengqiang Hu,

Zhongsheng Dai

et al.

Energy storage materials, Journal Year: 2024, Volume and Issue: 72, P. 103695 - 103695

Published: Aug. 9, 2024

Language: Английский

Citations

4
Morphology Engineering in Cobalt‐Free Li‐Rich Oxides for High‐Capacity and Strain‐Tolerant Cathodes DOI
Maolin Yang, Tao Zeng, Dongyu He

et al.

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

Published: April 14, 2025

Abstract Morphology engineering plays a critical role in enhancing ionic diffusion kinetics and activating oxygen redox activity cobalt‐free lithium‐rich layered oxides (LROs), addressing their intrinsic limitations for high‐energy‐density batteries. Herein, morphology‐engineering strategy is proposed to synthesize LRO cathodes with radially arranged primary grains (LRO‐RA) short rod‐like (LRO‐SR). The radial architecture of LRO‐RA establishes fast Li + pathways, as evidenced by its near‐identical coefficient LRO‐SR despite dominating contributions. This accelerated ion transport facilitates reversible anionic redox, yielding 79 mAh g −1 higher initial discharge capacity (0.1C) 50.6 mV lower O oxidation potential compared LRO‐SR. Advanced spectroscopic diffraction analyses confirm that the morphology stabilizes minimizes MnO 6 distortion, mitigates strain accumulation. Consequently, achieves 94.8% retention after 400 cycles (1C), far exceeding (75.6%), mitigated voltage decay. Post‐cycling analysis confirms dense resist electrolyte infiltration phase transformation, preserving structural integrity. work elucidates how morphology‐driven optimization amplifies reversibility, offering universal design principle high‐capacity Li‐rich cathodes.

Language: Английский

Citations

0
Scalable Shell Doping Strategy for Enhancing the Stability of Ni-rich Cathode Materials DOI

Myoung-Chan Kim,

Byung-Chun Park,

Nam-Yung Park

et al.

Energy storage materials, Journal Year: 2025, Volume and Issue: unknown, P. 104252 - 104252

Published: April 1, 2025

Language: Английский

Citations

0
Electrode and Electrolyte Design Strategies Toward Fast‐Charging Lithium‐Ion Batteries DOI
Jianwei Li,

Changyuan Guo,

Lijuan Tao

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 6, 2024

Abstract Fast‐charging lithium‐ion batteries are pivotal in overcoming the limitations of energy storage devices, particularly their density. There is a burgeoning interest boosting performance through enhanced fast‐charging capabilities. However, challenge lies developing that combine high rates, long cycle life, capacity, and safety. This review emphasizes importance fundamentals design principles fast charging, identifying transport ion/electron within electrodes/electrolytes' bulk phase at boundaries as crucial rate‐limiting steps for charging. Such ion tunnel regulation, interfacial modification, defect engineering multiphase systems, various optimization strategies improve stable exceptional electrochemical reaction kinetics electrodes. Constructing solid electrolyte interfaces adjusting solvation structures further enhance Li + diffusion electrolytes. The critically assesses impacts these strategies, suggesting future research directions insights advancing batteries. It anticipated this will inspire guide systematic evolution technologies.

Language: Английский

Citations

3
High Entropy Fine‐Tuning Achieves Fast Li+ Kinetics in High‐Performance Co‐Free High‐Ni Layered Cathodes DOI Open Access
Yang Liu,

Yan Xin,

Bijiao He

et al.

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

Published: Jan. 27, 2025

Abstract Co‐free high‐Ni layered cathode materials LiNi x Me y O 2 (Me = Mn, Mg, Al, etc.) are a key part of the next‐generation high‐energy lithium‐ion batteries (LIBs) due to their high specific capacity and low cost. However, hindered Li + kinetics reactivity Ni 4+ result in poor rate performance unsatisfied cycling stability. This work designs promising strategy for designing high‐performance high‐entropy doping 0.9 Mn 0.03 Mg 0.02 Ta Mo Na 0.01 (HE‐Ni90‐1.557) by elemental screening compositional fine‐tuning. Compositional fine‐tuning optimizes synergistic relationship between dopant elements, thereby significantly suppresses kinetic hysteresis induced /Ni 2+ mixing. The pillar effect enhances diffusion at state charge (SOC). Meanwhile, postpones H2‐H3 phase transition reduces dissolution metals loss lattice oxygen cathodes. Consequently, atomic electrode particle scales enhanced. HE‐Ni90‐1.557 exhibits an initial 225.1 mAh g −1 0.2 C full cell with retention 83.1% after 1500 cycles 3C. provides avenue commercializing cathodes LIBs.

Language: Английский

Citations

0