Phase Engineering and Ion Diffusion Kinetics for High Power and Long Lifespan Potassium-Ion Batteries DOI

Xuan‐Wen Gao,

Qi Li, Rui Yang

et al.

ACS Applied Energy Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 30, 2024

The exploration of stable layered oxide cathode materials is crucial for advancing potassium-ion batteries (PIBs) technology and understanding ion storage diffusion behaviors. P2-Na0.6[Ni0.3Mn0.55Cu0.1Ti0.05]O2 (P2-NMCT) explored as a material PIBs. Operating within the voltage range 1.5–4 V, it demonstrates an initial discharge capacity 96 mAh g–1 at current density 15 mA g–1. Under high 300 g–1, exhibits 83.0% retention after 500 cycles, highlighting exceptional cycling stability. Based on in situ X-ray diffraction galvanostatic intermittent titration technique analyses, observed that during Na+/K+ exchange process, potassium ions enrich to form potassium-rich P2 phase, while residual sodium maintain original sodium-rich phase structure. This biphasic structure directed migration contribute excellent kinetic performance. Additionally, later stages discharge, enriched region disrupted, leading formation low-strain P2Na/K with mixed Na/K distribution alkali metal layers. transformation stabilizes structural integrity enhances stability, showcasing its potential high-performance

Language: Английский

Recent advances in rational design for high-performance potassium-ion batteries DOI
Yifan Xu, Yichen Du,

Han Chen

et al.

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(13), P. 7202 - 7298

Published: Jan. 1, 2024

The growing global energy demand necessitates the development of renewable solutions to mitigate greenhouse gas emissions and air pollution. To efficiently utilize yet intermittent sources such as solar wind power, there is a critical need for large-scale storage systems (EES) with high electrochemical performance. While lithium-ion batteries (LIBs) have been successfully used EES, surging price, coupled limited supply crucial metals like lithium cobalt, raised concerns about future sustainability. In this context, potassium-ion (PIBs) emerged promising alternatives commercial LIBs. Leveraging low cost potassium resources, abundant natural reserves, similar chemical properties potassium, PIBs exhibit excellent ion transport kinetics in electrolytes. This review starts from fundamental principles structural regulation PIBs, offering comprehensive overview their current research status. It covers cathode materials, anode electrolytes, binders, separators, combining insights full battery performance, degradation mechanisms,

Language: Английский

Citations

136
Multiple Electron Transfers Enable High‐Capacity Cathode Through Stable Anionic Redox DOI Open Access
Lichen Wu,

Zhongqin Dai,

Hongwei Fu

et al.

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

Published: Jan. 13, 2025

Abstract Single‐electron transfer, low alkali metal contents, and large‐molecular masses limit the capacity of cathodes. This study uses a cost‐effective light‐molecular‐mass orthosilicate material, K 2 FeSiO 4 , with high initial potassium content, as cathode for potassium‐ion batteries to enable transfer more than one electron. Despite limited valence change Fe ions during cycling, can undergo multiple electron transfers via successive oxygen anionic redox reactions generate reversible capacity. Although formation O‒O dimers in occur upon removing large amounts potassium, strong binding effect Si on O mitigates irreversible release voltage degradation cycling. achieves 236 mAh g −1 at 50 mA an energy density 520 Wh kg which be comparable commercial LiFePO materials. Moreover, it also exhibits 1400 stable cycles under high‐current conditions. These findings enhance potential commercialization prospects batteries.

Language: Английский

Citations

4
Enabling High-Voltage and Long Lifespan Sodium Batteries via Single-Crystal Layer-Structured Oxide Cathode Material DOI
Dong‐Run Yang, Liu Chen,

Xuan-Wen Gao

et al.

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 10, 2025

Manganese-based layer-structured transition metal oxides are considered promising cathode materials for future sodium batteries owing to their high energy density potential and industrial feasibility. The grain-related anisotropy electrode/electrolyte side reactions, however, constrain cycling lifespan, particularly at voltages. Large-sized single-crystal O3-typed Na[Ni0.3Mn0.5Cu0.1Ti0.1]O2 was thus designed successfully synthesized toward high-voltage long-lifespan batteries. grain-boundary-free structure unidirectional Na+ diffusion channels enable a faster rate electronic conductivity. Meanwhile, the large-area exposed (003) crystal plane can not only exhibit higher barrier electrode–electrolyte reactions but also alleviate interlayer sliding structural collapse during charge–discharge processes. lattice oxygen in contact with electrolyte stabilized, TMO6 octahedral integrity maintained as well. A specific capacity of 160.1 mAh g–1 current 0.1 C demonstrated. Coupled hard carbon anode, full cell demonstrate an excellent stability, achieving 141.1 C. After 100 cycles 2 C, retention is 97.3%.

Language: Английский

Citations

3
K2[(VOHPO4)2(C2O4)]·2H2O as a high‐potential cathode material for potassium‐ion batteries DOI Creative Commons

Xiaogang Niu,

Nan Li, Yifan Chen

et al.

Battery energy, Journal Year: 2024, Volume and Issue: 3(4)

Published: April 21, 2024

Abstract Potassium‐ion batteries (KIBs) represent a promising energy storage solution owing to the abundance of potassium resources. The efficacy KIBs relies significantly on electrochemical attributes both their electrode materials and electrolytes. In current investigation, we synthesized layered compound K 2 [(VOHPO 4 ) (C O )]·2H via heterogeneous nucleation approach assessed its viability as cathode material for KIBs. When integrated with salt‐concentrated electrolyte oxidation stability over 6 V, compounds exhibit high discharge potential 4.1 V (vs. + /K) alongside reversible capacity 106.2 mAh g −1 . Furthermore, there is no decay after 500 cycles at 100 mA This study shows promise metal organic frameworks high‐potential

Language: Английский

Citations

5
Engineering potassium-ion battery anodes with ultra-high structural stability and their potassium storage mechanism DOI

Shuangsheng Xiong,

Shuangshuang Liu, Keju Sun

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: 505, P. 159921 - 159921

Published: Jan. 25, 2025

Language: Английский

Citations

0
Spontaneous passivation on high-voltage manganese-based layered oxide cathodes via Selective surface doping for potassium-ion batteries DOI
Zhengkui Li, Wei Xiao, Huaming Qian

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160414 - 160414

Published: Feb. 1, 2025

Language: Английский

Citations

0
A synergistic pinning effect in a layer-structured oxide cathode for enhancing stability towards potassium-ion batteries DOI

Xuan‐Wen Gao,

Shuaishuai Wang,

Qi Li

et al.

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(26), P. 15676 - 15684

Published: Jan. 1, 2024

The dual-site doping of Li, relies on transition metal site substitution to reduce the Mn 3+ content, suppresses potential J–T effect and synergises with “pillar” structure formed by alkali substitution.

Language: Английский

Citations

2
Phase Heterojunction by Constructing Built‐In Electric Field toward Sodium‐Rich Cathode Material DOI Open Access

Qingsong Lai,

Chen Liu,

Xuan‐Wen Gao

et al.

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

Published: Oct. 15, 2024

Abstract An artificial built‐in electric field from phase heterojunction is constructed within sodium‐rich manganese‐based layer‐structured oxide O3‐Na[Ni 0.3 Mn 0.55 Cu 0.1 Ti 0.05 ]O 2 @Na MoO 4 through shared oxygen atoms. The spinel Na behaves as a p‐type semiconductor, while the functions an n‐type semiconductor. It can efficiently reduce diffusion barrier and enhance electron transport, which adequately promote interfacial desolvation ability bulk lattice strains. formed heterostructure with crystal structure stability also interface + protect electrode against moisture carbon dioxide corrosion. Besides, molybdenum introduction bond covalency, fortifying restraining structural distortion effectively. obtained cathode demonstrates high up to 224.61 mAh g −1 discharge specific capacity at C long cycle 60.44% retention after 265 cycles 0.5 C. This study illuminates potential of Na‐rich Mn‐based cathodes for high‐energy‐density sodium battery utilizations.

Language: Английский

Citations

2
Interface Chemistry Engineering toward Layer-Structured Oxide for Potassium-Ion Batteries DOI

Xuan-Chen Wang,

Lu-Kang Zhao,

Zhao-Meng Liu

et al.

ACS Energy Letters, Journal Year: 2024, Volume and Issue: unknown, P. 48 - 57

Published: Dec. 9, 2024

Language: Английский

Citations

2
Layer-structured P3-K0.5Mn0.95W0.05O2 for enhanced potassium-ion batteries by mitigating phase transformation DOI

Xuan‐Wen Gao,

Lu-Kang Zhao,

Qi Li

et al.

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(34), P. 23059 - 23066

Published: Jan. 1, 2024

The movement of transition metal layers and the transformation from P3-type to O3-type structure were successfully suppressed in designed K 0.5 Mn 0.95 W 0.05 O 2 cathode for potassium-ion batteries.

Language: Английский

Citations

1