Generality Rules and Synergistic Effect of Mitigating the Jahn–Teller Effect by Multisites Compositionally Complex Doping DOI
Shuyu Zhou, Junhong Liao,

Chenglong Yu

и другие.

ACS Nano, Год журнала: 2024, Номер 18(52), С. 35356 - 35367

Опубликована: Дек. 17, 2024

The Jahn–Teller (JT) deformation triggers severe structural distortion and large capacity fading in the cathode materials of alkali-ion batteries. Although conventional doping containing over 20 dopant species has been demonstrated to suppress JT effect, how short-range cooperative effect are regulated remains an open question. Recently, new compositionally complex (high entropy) validated various oxide cathodes achieved "zero strain", but reported "synergistic effect" is largely factual reporting with a limited fundamental understanding link between multicomponents effect. By comparing group spinel LiMn2O4 (LMO) tridoping sites one, three, or five dopants' species, present work shows that MnO6 octahedral systematically decreases, whereas retention structure stability increase as number increases. We propose generality rules Mn-site breaks linear continuous while 16c-sites disturbs dz2-orbital collinear ordering mitigates Moreover, our strategy further buffers rotates strain, resulting isotropic moderate volume distortion. Based on this synergic both significantly suppressed synthesized multisites multicomponent doped LMO.

Язык: Английский

Microstructures of layered Ni-rich cathodes for lithium-ion batteries DOI
Jingyu Lu, Chao Xu, Wesley M. Dose

и другие.

Chemical Society Reviews, Год журнала: 2024, Номер 53(9), С. 4707 - 4740

Опубликована: Янв. 1, 2024

The microstructural degradation, stabilization, and characterization of layered Ni-rich cathodes for Li-ion batteries are comprehensively reviewed in this paper.

Язык: Английский

Процитировано

69
High‐Entropy Engineering Reinforced Surface Electronic States and Structural Defects of Hierarchical Metal Oxides@Graphene Fibers toward High‐Performance Wearable Supercapacitors DOI

Haowei Hu,

Chao Yang, Fangyuan Chen

и другие.

Advanced Materials, Год журнала: 2024, Номер 36(35)

Опубликована: Июнь 20, 2024

Abstract Construction advanced fibers with high Faradic activity and conductivity are effective to realize energy density sufficient redox reactions for fiber‐based electrochemical supercapacitors (FESCs), yet it is generally at the sacrifice of kinetics structural stability. Here, a high‐entropy doping strategy proposed develop high‐energy‐density FESCs based on doped metal oxide@graphene fiber composite (HE‐MO@GF). Due synergistic participation multi‐metal elements via doping, HE‐MO@GF features abundant oxygen vacancies from introducing various low‐valence ions, lattice distortions, optimized electronic structure. Consequently, maintains active sites, low diffusion barrier, fast adsorption kinetics, improved conductivity, enhanced stability, Faradaic reversibility. Thereinto, presents ultra‐large areal capacitance (3673.74 mF cm −2 ) excellent rate performance (1446.78 30 mA in 6 M KOH electrolyte. The HE‐MO@GF‐based solid‐state also deliver (132.85 µWh ), good cycle (81.05% capacity retention after 10,000 cycles), robust tolerance sweat erosion multiple washing, which woven into textile power wearable devices (e.g., watch, badge luminous glasses). This provides significant guidance designing innovative materials highlights development next‐generation devices.

Язык: Английский

Процитировано

32
High‐Entropy Oxides for Rechargeable Batteries DOI

Biao Ran,

Huanxin Li, Ruiqi Cheng

и другие.

Advanced Science, Год журнала: 2024, Номер 11(25)

Опубликована: Апрель 22, 2024

Abstract High‐entropy oxides (HEOs) have garnered significant attention within the realm of rechargeable batteries owing to their distinctive advantages, which encompass diverse structural attributes, customizable compositions, entropy‐driven stabilization effects, and remarkable superionic conductivity. Despite brilliance HEOs in energy conversion storage applications, there is still lacking a comprehensive review for both entry‐level experienced researchers, succinctly encapsulates present status challenges inherent HEOs, spanning features, intrinsic properties, prevalent synthetic methodologies, diversified applications batteries. Within this review, endeavor distill characteristics, ionic conductivity, entropy explore practical (lithium‐ion, sodium‐ion, lithium‐sulfur batteries), including anode cathode materials, electrolytes, electrocatalysts. The seeks furnish an overview evolving landscape HEOs‐based cell component shedding light on progress made hurdles encountered, as well serving guidance compositions design optimization strategy enhance reversible stability, electrical electrochemical performance conversion.

Язык: Английский

Процитировано

31
Closed‐Loop Direct Upcycling of Spent Ni‐Rich Layered Cathodes into High‐Voltage Cathode Materials DOI
Haocheng Ji, Junxiong Wang,

Haotian Qu

и другие.

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Июль 15, 2024

Abstract Facing the resource and environmental pressures brought by retiring wave of lithium‐ion batteries (LIBs), direct recycling methods are considered to be next generation's solution. However, contradiction between limited battery life demand for rapidly iterating technology forces recovery paradigm shift toward “direct upcycling.” Herein, a closed‐loop upcycling strategy that converts waste current collector debris into dopants is proposed, highly inclusive eutectic molten salt system utilized repair structural defects in degraded polycrystalline LiNi 0.83 Co 0.12 Mn 0.05 O 2 cathodes while achieving single‐crystallization transformation introducing Al/Cu dual‐doping. Upcycled materials can effectively overcome two key challenges at high voltages: strain accumulation lattice oxygen evolution. It exhibits comprehensive electrochemical performance far superior commercial 4.6 V, especially its fast charging capability 15 C, an impressive 91.1% capacity retention after 200 cycles 1.2 Ah pouch cell. Importantly, this approach demonstrates broad applicability various spent layered cathodes, particularly showcasing value mixed cathodes. This work bridges gap management material enhancement, offering sustainable path LIBs production next‐generation high‐voltage

Язык: Английский

Процитировано

21
Improving upon rechargeable battery technologies: On the role of high-entropy effects DOI
Zihao Zhou, Yuan Ma, Torsten Brezesinski

и другие.

Energy & Environmental Science, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

An overview of high-entropy strategies for batteries is provided, emphasizing their unique structural/compositional attributes and positive effects on stability performance, alongside a discussion key challenges future research directions.

Язык: Английский

Процитировано

11
The future nickel metal supply for lithium-ion batteries DOI
Jiale Sun, Haihui Zhou, Zhongyuan Huang

и другие.

Green Chemistry, Год журнала: 2024, Номер 26(12), С. 6926 - 6943

Опубликована: Янв. 1, 2024

This article reviews the supply of nickel metal for lithium-ion batteries with regard to its resources, reserves, extraction and recycling, application.

Язык: Английский

Процитировано

8
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

и другие.

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 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.

Язык: Английский

Процитировано

1
Unveiling the Origin of Oxygen Framework Stability in Ultra‐High Nickel Layered Oxide Cathodes DOI Open Access
Fangyan Liu, Shihao Li,

Chihon Leung

и другие.

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 6, 2025

Ultra-high nickel layered oxides are recognized as promising cathode candidates for high-energy-density lithium-ion batteries due to their enhanced overall capacity and elevated operating voltage. However, the interlayer sliding of transition metal-oxygen octahedra (TMO6) instability lattice oxygen at high voltages ultra-high oxide cathodes pose significant challenges development. Herein, origin framework stability is investigated by incorporating high-covalent element Mo in both bulk surface using a one-step integrated method material LiNi0.92Co0.08O2. It revealed that apart from isolation protection effect Mo-enriched layer, suppression Li/Ni antisite defects Mo6+ with strong covalency plays critical role reducing configurations activated anionic redox reaction stabilizing structure. Benefiting this, reversibility significantly enhanced, enabling more oxidized exist form dimer ions O2n-$O_2^{n - }$ rather than being lost gaseous O2. Consequently, modified demonstrates improved diffusion kinetics optimized electrochemical performance

Язык: Английский

Процитировано

1
High-Entropy Approach vs. Traditional Doping Strategy for Layered Oxide Cathodes in Alkali-Metal-Ion Batteries: A Comparative Study DOI Creative Commons
Yanjiao Ma,

Han Du,

Siyuan Zheng

и другие.

Energy storage materials, Год журнала: 2025, Номер unknown, С. 104295 - 104295

Опубликована: Май 1, 2025

Язык: Английский

Процитировано

1
Stabilizing Layered Cathodes by High-Entropy Doping DOI Creative Commons
Yuan Ma, Zihao Zhou, Torsten Brezesinski

и другие.

Research, Год журнала: 2024, Номер 7

Опубликована: Янв. 1, 2024

Layered Ni-rich oxide cathodes in lithium-ion batteries (LIBs) often struggle with poor thermal safety and capacity fade. Xin colleagues’ studies Nature Energy demonstrate a novel high-entropy (compositionally complex) doping strategy, introducing “cocktail effects” from multiple constituents. This approach substantially improves cycling performance stability, reduces material cost, may pave the way toward development of advanced electrodes for next-generation LIBs.

Язык: Английский

Процитировано

6