Rhombohedral Zinc Hexacyanoferrate as a High‐Voltage Cathode Material for Aqueous Mn‐ion Batteries DOI Creative Commons

Jangwook Pyun,

Hyungjin Lee, Hyeonjun Lee

et al.

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

Published: May 23, 2025

Abstract Aqueous metal batteries have emerged as a promising alternative to lithium‐ion batteries, offering enhanced safety through the use of aqueous electrolytes. Manganese‐ion battery systems remain underexplored despite low manganese redox potential −1.19 V (vs standard hydrogen electrode) well high operating voltage and capacity. In this study, rhombohedral zinc Prussian blue analog (ZnHCF) is investigated for first time cathode material manganese‐ion demonstrating highest reported in field (0.55 vs Ag/AgCl or 1.94 Mn/Mn 2 ⁺). ZnHCF exhibits discharge capacity 79.2 mAh g −1 at 0.2 A with excellent stability, retaining its original performance after 4000 cycles. By performing comprehensive electrochemical characterization, advanced structural analysis, spectroscopic studies, diffusion pathway energy barrier calculations, charge storage mechanism behavior are elucidated. This study underlines application high‐performing helps achieve better understanding Mn electrochemistry, valuable insights advancing toward efficient sustainable storage.

Language: Английский

Layered Organic Molecular Crystal with One-Dimensional Ion Migration Channel for Durable Magnesium-Based Dual-Ion Batteries DOI

Yanzeng Ge,

Baoquan Liu, Daoxiong Wu

et al.

ACS Energy Letters, Journal Year: 2025, Volume and Issue: unknown, P. 1615 - 1622

Published: March 12, 2025

Language: Английский

Citations

2
Progress of Organic Carbonyl Compounds as Electrode Materials for Sodium−ion Batteries DOI
Fei Wu,

Liangju Zhao,

Lei Wang

et al.

Nano Energy, Journal Year: 2024, Volume and Issue: unknown, P. 110534 - 110534

Published: Dec. 1, 2024

Language: Английский

Citations

5
Nonaqueous Electrolyte Rechargeable Manganese Batteries with Potassium Manganese Hexacyanoferrate Cathodes DOI Creative Commons

Jangwook Pyun,

Hyunjun Lee,

Seunghyeop Baek

et al.

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

Published: March 28, 2025

Abstract Manganese batteries garnered significant attention as sustainable and cost‐effective alternatives to lithium‐ion batteries. For the first time, manganese are demonstrated using a hexacyanoferrate cathode organic electrolyte solution, specifically saturated Mn(ClO₄)₂ in acetonitrile. The exhibits an average operating voltage of 1.7 V discharge capacity 73.4 mAh g −1 at 0.1 A , retaining 71.1% after 1500 cycles 0.2 . Diffusion pathways barriers reveal efficient 3D Mn 2 ⁺ ion diffusion within framework, with low migration barrier 0.514 eV. Despite promising performance, surface analysis metal anode reveals formation complex organic/inorganic SEI (solid interphase) layers, including MnO x MnCl compounds, due decomposition. These findings highlight critical importance layer control optimization for enhancing durability efficiency electrolyte‐based established viable next‐generation energy storage solution provide foundation further advancements battery systems.

Language: Английский

Citations

0
Layered Iron Vanadate for High‐Performance and Stable Cathode Material for Aqueous Manganese Batteries DOI Creative Commons

Seunghyeop Baek,

Dedy Setiawan, Hyeonjun Lee

et al.

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

Published: April 7, 2025

Abstract Aqueous rechargeable metal batteries have gained significant attention because of the low cost, high capacity, and inherent safety offered by nonflammable water‐based electrolytes. Among these, Mn‐based systems are promising owing to their intrinsic stability, abundance, affordability, energy density. Despite these advantages, development suitable host structures for Mn storage remains underexplored. This study introduces layered iron vanadate, FeV 3 O 9 ·1.1H 2 O, as a new cathode material aqueous batteries, demonstrating exceptional performance. The exhibits reversible capacity 306.9 mAh g −1 at 0.25 A an excellent rate performance 210.6 . In addition, outstanding cycling retaining 73.4% its initial after 3000 cycles − ¹, which is attributed volume expansion. underlying reaction mechanism elucidated through spectroscopic microscopic analyses. When integrated into final cell, system demonstrates superior compared Zn underscoring potential next‐generation battery systems. These findings advance technology, paving way safer, more cost‐effective, high‐performance solutions.

Language: Английский

Citations

0
Oxygen Vacancy‐Driven High‐Performance V2O5 Cathodes for Aqueous Manganese Metal Batteries DOI Creative Commons
Sang Ki Lee, Hyungjin Lee, Hyunjun Lee

et al.

Energy & environment materials, Journal Year: 2025, Volume and Issue: unknown

Published: May 14, 2025

Aqueous batteries are an emerging next‐generation technology for large‐scale energy storage. Among various metal‐ion systems, manganese‐based have attracted significant interest due to their superior theoretical density over zinc‐based battery systems. This study demonstrates oxygen vacancy‐engineered vanadium oxide (V 2 O 4.85 ) as a high‐performance cathode material aqueous manganese metal batteries. The V had discharge capacity of 212.6 mAh g −1 at 0.1 A , retaining 89.5% after 500 cycles. Oxygen vacancies enhanced ion diffusion and reduced migration barriers, facilitating both Mn 2+ H + intercalation. Proton intercalation dominated charge storage, forming Mn(OH) layers, whereas contributed surface‐limited reactions. Furthermore, significantly higher operating voltage than that zinc Despite challenges with hydrogen evolution reactions the anode, this underscores potential future storage

Language: Английский

Citations

0
Rhombohedral Zinc Hexacyanoferrate as a High‐Voltage Cathode Material for Aqueous Mn‐ion Batteries DOI Creative Commons

Jangwook Pyun,

Hyungjin Lee, Hyeonjun Lee

et al.

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

Published: May 23, 2025

Abstract Aqueous metal batteries have emerged as a promising alternative to lithium‐ion batteries, offering enhanced safety through the use of aqueous electrolytes. Manganese‐ion battery systems remain underexplored despite low manganese redox potential −1.19 V (vs standard hydrogen electrode) well high operating voltage and capacity. In this study, rhombohedral zinc Prussian blue analog (ZnHCF) is investigated for first time cathode material manganese‐ion demonstrating highest reported in field (0.55 vs Ag/AgCl or 1.94 Mn/Mn 2 ⁺). ZnHCF exhibits discharge capacity 79.2 mAh g −1 at 0.2 A with excellent stability, retaining its original performance after 4000 cycles. By performing comprehensive electrochemical characterization, advanced structural analysis, spectroscopic studies, diffusion pathway energy barrier calculations, charge storage mechanism behavior are elucidated. This study underlines application high‐performing helps achieve better understanding Mn electrochemistry, valuable insights advancing toward efficient sustainable storage.

Language: Английский

Citations

0