Interplay Between Ni and Fe-ions Substituted Mn-Rich Prussian Blue Analogues as a Promising Cathode for High-Energy K-ion Batteries DOI
N. Prasanna Naga Puneeth, L. Vasylechko, S. D. Kaushik

et al.

Energy & Fuels, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 11, 2024

The paradigm shift in energy demands has mandated the development of a feasible alternative and sustainable battery chemistry such as K-ion batteries that deliver desired density complement existing expensive Li-ion batteries. Therefore, identifying improving suitable cathodes with promising stability at high operating voltage is necessary. In this context, comprehensive analysis was carried out to synthesize Ni Fe-substituted manganese-based Prussian blue analogues. Structural characterizations revealed formation solid solution by observing slightly altered unit cell parameters. simultaneous precipitation transition metal ions resulted smaller primary particle sizes ∼60 nm, facilitating facile diffusion K-ions. Simultaneously, local electron distribution −CN– coordination around M–N bonds (Ni Fe) environment significantly improved electrochemical performance. behavior during (de)potassiation under competing electrochemically active (Mn inactive (Ni) substitution mitigated detrimental Jahn–Teller effect Mn2+/3+ lowered average discharge potential from 3.75 3.72 V vs K/K+. This ultimately rate capability PBMNF-712 (KxMn0.7Ni0.1Fe0.2[Fe(CN)6]) dramatically 88 mAh/g, whereas PBM (KxMn[Fe(CN)6]) delivered only 48 mAh/g current 1000 mA/g reduced charge transfer resistance. approach demonstrated robust cycling 500 mA/g, delivering specific capacity 93 even after 300 cycles.

Language: Английский

From Na to K‐Based Prussian Blue: A Path Toward Cathode Materials for Extreme Environment DOI Open Access
Zheng Xu, Shuangyu Liu, Jian Xie

et al.

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

Published: Jan. 22, 2025

Abstract Prussian blue (PB) is regarded as a promising host for Na or K storage because of its sustainable precursor elements (e.g., Mn, Fe) and open framework structure. However, unstable structure, high crystal H 2 O content, risky HCN generation restrain practical applications. In this work, after systematical investigation structural evolution from Na‐based to K‐based PB relationship with electrochemical properties, it clarified that low water trace doping are essential robust structure stable cycling PB. It found Na‐doped exhibits comprehensive properties content (3.2 wt%), thermal stability (over 340 °C), superior (84.3% 6300 cycles at 5 C). Besides, the can also present under harsh conditions, such intermittent‐overcharge/overdischarge steps (4.8 V/1.2 V, 93.3% 2100 C), in wide voltage range (93.2% 1000 1.5‒4.5 V/5 rate (83.7% 4350 10 temperature (92.0% 1650 45 °C/1 The attributed robustness even conditions.

Language: Английский

Citations

1
Tuning Cyanide Coordination Electronic Structure Enables Stable Prussian Blue Analogues for Sodium-ion Batteries DOI Creative Commons
Pengjian Zuo, Yuanheng Wang, Jiaxin Yan

et al.

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 4, 2025

Abstract Prussian blue analogues (PBAs) with 3D cyanide-bridged frameworks exhibit significant potential as cathode materials for sodium-ion batteries. However, the dissolution of transition metals and structural distortion often lead to instability, causing serious capacity degradation during cycling. Fundamental understanding tuning coordination electronic structure mitigate PBAs instability remain challenging. Herein, we address these challenges by modulating local surrounding high-spin optimize cyanide environment, enabling a uniform electron distribution within crystal structure. The resulting enhances reactivity metals, which helps achieve 95.7% theoretical capacity. More importantly, regulation displacement environment significantly improves stability, yielding an impressive retention 91.7% after 1000 cycles. These findings provide new insights into chemistry offer valuable guidance development advanced

Language: Английский

Citations

0
Ultralong‐Life Aqueous Ammonium‐Ion Batteries Enabled by Unlocking Inert‐Site of Medium‐Entropy Prussian Blue Analogs DOI Open Access
Chunyan Wei, Zhonghui Sun, Zhen‐Yi Gu

et al.

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

Published: March 24, 2025

Abstract Prussian blue analogs (PBAs) have been heralded as promising alternative cathodes for aqueous ammonium‐ion batteries (AAIBs) owing to their chemical flexibility at the molecular level and eco‐friendliness. However, low capacity, irreversible phase, structure transition are enormous challenges toward practical application. Herein, an entropy‐regulating strategy is proposed boost both specific capacity structural stability by introducing Cu, Ni, Co, Mn, Fe 4b sites in PBAs (CNCMF‐PBAs). The synergistic effect of randomly dispersed metal elements creates abundant redox centers enhances durability. This inhibits dissolution facilitates a highly reversible phase between cubic tetragonal structures with minimal lattice strain (only 0.8%) NH 4 + (de)intercalation. Moreover, it interesting find that this gradually growing cathode roots from activation Cu 2+ /Cu , Mn 3+ /Mn Ni /Ni pairs entropy induction voltage region. As result, CNCMF‐PBAs achieves high 101.2 mAh g −1 without attenuation over 45 000 cycles (lasting 180 days) 20 C. study provides substantial advance on materials excellent storage rapid multi‐electron transfer kinetics.

Language: Английский

Citations

0
Vacancy Remediation in Prussian Blue Analogs for High‐Performance Sodium and Potassium Ion Batteries DOI Open Access
Ruixue Wu, Bo Ren,

Xianda Wang

et al.

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

Published: Dec. 20, 2024

Abstract Sodium‐ion batteries (SIBs) and potassium‐ion (PIBs) have enormous potential for large‐scale energy storage due to their cost‐effectiveness, safety, environmental compatibility. Developing high‐capacity highly reliable cathode materials is key advancing the commercialization of SIBs PIBs. Low‐cost Prussian blue analogs (PBAs), with open 3D framework ease synthesis, are preferred applications. However, unique growth mechanism PBAs introduces numerous Fe(CN) 6 vacancies, which compromise structural integrity result in capacity decay collapse during long‐term electrochemical cycling. Additionally, cracking can cause dissolution transition metal (TM) ions, undesirable interfacial reactions, gas generation, shorten battery's lifespan raise safety concerns. In this review, mechanisms vacancy formation first clarified, providing a comprehensive overview current strategies remediation based on both bottom‐up top‐down approaches. It then elucidate how optimized enhance lattice stability, suppress TM mitigate generation. Finally, it discussed future research directions provide perspectives further development high‐performance

Language: Английский

Citations

3
Topological Defect‐Regulated Porous Carbon Nanoribbon for High‐Performance Potassium‐Ion Batteries DOI
Yongsheng Zhou,

Yingchun Zhu,

You Liu

et al.

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 28, 2024

Abstract Potassium‐ion batteries (PIBs) using carbonaceous anode materials have attracted a great deal of research interest. However, the large atomic size potassium ions inevitably leads to huge volume expansion and collapse anodes during intercalation, which greatly hinders rate performance cycling life. In this work, carbon nanotube‐derived porous N‐doped nanoribbon (CNR) bundles are designed as an for PIBs. These CNR in rich defects provide fast channels charge transport abundant active sites ion storage. The exhibit maximum capacity 441.4 mA h g −1 at current density 0.2 A after 200 cycles well highly reversible 263.6 5.0 even 1000 cycles. This work provides guidance structure design high‐performance

Language: Английский

Citations

1
Interplay Between Ni and Fe-ions Substituted Mn-Rich Prussian Blue Analogues as a Promising Cathode for High-Energy K-ion Batteries DOI
N. Prasanna Naga Puneeth, L. Vasylechko, S. D. Kaushik

et al.

Energy & Fuels, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 11, 2024

The paradigm shift in energy demands has mandated the development of a feasible alternative and sustainable battery chemistry such as K-ion batteries that deliver desired density complement existing expensive Li-ion batteries. Therefore, identifying improving suitable cathodes with promising stability at high operating voltage is necessary. In this context, comprehensive analysis was carried out to synthesize Ni Fe-substituted manganese-based Prussian blue analogues. Structural characterizations revealed formation solid solution by observing slightly altered unit cell parameters. simultaneous precipitation transition metal ions resulted smaller primary particle sizes ∼60 nm, facilitating facile diffusion K-ions. Simultaneously, local electron distribution −CN– coordination around M–N bonds (Ni Fe) environment significantly improved electrochemical performance. behavior during (de)potassiation under competing electrochemically active (Mn inactive (Ni) substitution mitigated detrimental Jahn–Teller effect Mn2+/3+ lowered average discharge potential from 3.75 3.72 V vs K/K+. This ultimately rate capability PBMNF-712 (KxMn0.7Ni0.1Fe0.2[Fe(CN)6]) dramatically 88 mAh/g, whereas PBM (KxMn[Fe(CN)6]) delivered only 48 mAh/g current 1000 mA/g reduced charge transfer resistance. approach demonstrated robust cycling 500 mA/g, delivering specific capacity 93 even after 300 cycles.

Language: Английский

Citations

0