Journal of Power Sources, Год журнала: 2024, Номер 626, С. 235686 - 235686
Опубликована: Ноя. 2, 2024
Язык: Английский
Advanced Materials, Год журнала: 2024, Номер 36(16)
Опубликована: Янв. 13, 2024
Abstract The limited cyclability of high‐specific‐energy layered transition metal oxide (LiTMO 2 ) cathode materials poses a significant challenge to the industrialization batteries incorporating these materials. This limitation can be attributed various factors, with intrinsic behavior crystal structure during cycle process being key contributor. These factors include phase induced cracks, reduced Li active sites due Li/Ni mixing, and slower + migration. In addition, presence synthesis‐induced heterogeneous phases lattice defects cannot disregarded as they also contribute degradation in performance. Therefore, gaining profound understanding intricate relationship among material synthesis, structure, performance is imperative for development LiTMO . paper highlights pivotal role structural play provides comprehensive overview how control influence specific pathways evolution synthesis process. it summarizes scientific challenges associated diverse modification approaches currently employed address cyclic failure overarching goal provide readers insights into study
Язык: Английский
Процитировано
27
Advanced Energy Materials, Год журнала: 2024, Номер 14(11)
Опубликована: Янв. 26, 2024
Abstract Single‐crystal Ni‐rich LiNi 1−x−y Co x Mn y O 2 (NCM) cathodes have garnered widespread attention in the lithium‐ion battery community due to their unique advantages mechanical performance and ability minimize interfacial electrochemical side reactions. The synthesis of single‐crystal materials with monodisperse appropriate size, minimal lattice defects, highly ordered structures is key for high‐performance batteries. However, achieving this goal poses challenges lack in‐depth understanding regarding specific experimental parameters solid reaction mechanism during process. In review, aim provide an analysis critical process involved impact on crystal morphology, structure, performance. Consequently, first section focuses effect precursor lithium salt, atmosphere, sintering procedure. second section, study delves into discussion growth mechanism. Lastly, it concluded by highlighting prospects associated application NCM cathodes.
Язык: Английский
Процитировано
27
Advanced Energy Materials, Год журнала: 2025, Номер unknown
Опубликована: Янв. 5, 2025
Abstract The bimetallic synergies effect and combined conversion/alloying mechanism endow thiospinel FeIn 2 S 4 with great potential as an anode material for sodium‐ion batteries (SIBs). However, their inconsistent synthesis, severe volumetric expansion, sluggish reaction kinetics typically lead to unsatisfactory cyclic stability rate capability. Herein, organic framework derived @N/S‐C microrods Fe vacancies is presented fast, durable, reversible sodium storage. presence of significantly modulates the d ‐band center decreases strength Fe─S bond facilitating sodiation jointly. Moreover, a thin stable solid electrolyte interface film inorganic‐rich components formed by induction. Combined N, co‐doped porous carbon matrix, optimal sample delivers excellent capability 381 mAh g −1 at 10 A performance (448 after 500 cycles 1 ). Furthermore, assembled full‐cells also exhibit superior electrochemical 87.5% capacity retention long‐term evaluations. This work presents promising strategy structural regulation sulfides advanced anodes SIBs.
Язык: Английский
Процитировано
25
Small, Год журнала: 2023, Номер 19(32)
Опубликована: Май 8, 2023
Abstract Layered Cobalt (Co)‐free Nickel (Ni)‐rich cathode materials have attracted much attention due to their high energy density and low cost. Still, further development is hampered by material instability caused the chemical/mechanical degradation of material. Although there are numerous doping modification approaches improve stability layered materials, these still in laboratory stage require research before commercial application. To fully exploit potential a more comprehensive theoretical understanding underlying issues necessary, along with active exploration previously unrevealed mechanisms. This paper presents phase transition mechanism Co‐free Ni‐rich existing problems, state‐of‐the‐art characterization tools employed study transition. The causes crystal structure degradation, interfacial instability, mechanical elaborated, from material's its atomic orbital splitting. By organizing summarizing mechanisms, this aims establish connections among common problems identify future priorities, thereby facilitating rapid materials.
Язык: Английский
Процитировано
39
Applied Surface Science, Год журнала: 2023, Номер 636, С. 157856 - 157856
Опубликована: Июнь 25, 2023
Язык: Английский
Процитировано
39
Advanced Materials, Год журнала: 2024, Номер unknown
Опубликована: Июнь 17, 2024
Abstract Microstructural engineering on nickel‐rich layered oxide (NRLO) cathode materials is considered a promising approach to increase both the capacity and lifespan of lithium‐ion batteries by introducing high valence‐state elements. However, rational regulation NRLO microstructures based deep understanding its enhancement mechanism remains challenging. Herein for first time, it demonstrated that an 14 mAh g −1 in reversible at cycle can be achieved via tailoring micro nano structure through tungsten. Aberration‐corrected scanning transmission electron microscopy (STEM) characterization reveals formation modified microstructure featured as coherent spinel twin boundaries. Theoretical modeling electrochemical investigations further demonstrate related such boundaries, which lower Li + diffusion barrier thus allow more participate deeper phase transitions. Meanwhile, surface grain boundaries NRLOs are found generating dense uniform LiW x O y phase, extends life reducing side reactions with electrolytes. This work enables comprehensive capacity‐increased endows remarkable potential microstructural capacity‐ lifespan‐increased NRLOs.
Язык: Английский
Процитировано
18
Small, Год журнала: 2024, Номер unknown
Опубликована: Июнь 6, 2024
Abstract The development and application of lithium‐ion batteries present a dual global prospect opportunity challenge. With conventional energy sources facing reserve shortages environmental issues, have emerged as transformative technology over the past decade, owing to their superior properties. They are poised for exponential growth in realms electric vehicles storage. cathode, vital component batteries, undergoes chemical electrochemical reactions at its surface that directly impact battery's density, lifespan, power output, safety. Despite increasing density cathodes commonly encounter surface‐side with electrolyte exhibit low conductivity, which hinder utility high‐power energy‐storage applications. Surface engineering has compelling strategy address these challenges. This paper meticulously examines principles progress cathode materials, providing insights into potential advancements charting trajectory practical implementation.
Язык: Английский
Процитировано
13
Energy storage materials, Год журнала: 2024, Номер 69, С. 103400 - 103400
Опубликована: Апрель 9, 2024
Язык: Английский
Процитировано
12
Electron, Год журнала: 2024, Номер 2(3)
Опубликована: Май 12, 2024
Abstract To drive electronic devices for a long range, the energy density of Li‐ion batteries must be further enhanced, and high‐energy cathode materials are required. Among materials, LiCoO 2 (LCO) is one most promising candidates when charged to higher voltages over 4.3 V. However, high‐voltage LCO confronted with severe surface bulk issues inducing poor cyclic stability. completely unleash potential cathodes, more comprehensive theoretical understanding underlying necessary, along active exploration previous modifications. This paper mainly presents degradation mechanisms under high voltage, formation evolution electrolyte interface, engineering strategies employed enhance cell performance. By organizing summarizing these modifications, this work aims establish associations among common research suggest future priorities, thus facilitating rapid development LCO.
Язык: Английский
Процитировано
10
Angewandte Chemie International Edition, Год журнала: 2025, Номер unknown
Опубликована: Фев. 1, 2025
Li-
and
Mn-rich
layered
oxides
exhibit
high
specific
capacity
due
to
the
cationic
anionic
reaction
process
during
high-voltage
cycling
(≥4.6
V).
However,
they
face
challenges
such
as
low
initial
coulombic
efficiency
(~70
%)
poor
stability.
Here,
we
propose
a
combination
of
H3BO3
treatment
temperature
calcination
construct
shell
with
vacancy
on
surface
Li1.2Ni0.2Mn0.6O2
(LLNMO).
The
produces
lattice
distortion,
forming
an
oxidized
On-
(0
Язык: Английский
Процитировано