Cocoon-shaped P3-type K0.5Mn0.7Ni0.3O2 as an advanced cathode material for potassium-ion batteries

Duan, Liping; Xu, Jianzhi; Xu, Yifan; Tian, Ruiqi; Sun, Yingying; Zhu, Chuannan; Mo, Xiangyin; Zhou, Xiaosi

doi:10.1016/j.jechem.2022.10.006

Cited by 40 publications

(23 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, compared to Li + and Na + , K + has a lower Lewis acidity, permitting a faster translational rate in the electrolytes. These benefits imply that PIBs are a competitive candidate for LIBs [2–5] . Unfortunately, during the electrode potassization and depotassization processes, the relatively large K + radius (1.38 Å) causes structural collapse and significant volumetric change [6,7] .…”

Section: Introductionmentioning

confidence: 99%

“…These benefits imply that PIBs are a competitive candidate for LIBs. [2][3][4][5] Unfortunately, during the electrode potassization and depotassization processes, the relatively large K + radius (1.38 Å) causes structural collapse and significant volumetric change. [6,7] Designing anode materials with more active sites and higher structural capabilities has been continuously pursued to overcome these challenges and develop PIBs with a satisfactory capacity and a long cycle life.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Efficient K‐Storage of Fe‐Coupled Organic Molecule Anode in Ether‐Based Electrolytes

Shen

Chen

Lai

et al. 2023

Chemistry A European J

View full text Add to dashboard Cite

Given these advantages of widely designable structures and environmentally friendly characteristics, organic electrode materials (OEMs) are considered to be promising electrode materials for alkaline metal-ion batteries. However, their large-scale application is hampered by insufficient specific capacity and rate performance. Here, Fe 2 + is coupled to the anhydride molecule NTCDA to form a novel K-storage anode Fe-NTCDA. In this way, the working potential of Fe-NTCDA anode is reduced, which makes it more suitable to be used as an anode material. Meanwhile, the electrochemical performance is significantly improved due to the increase in K-storage sites. Moreover, electrolytes regulation is implemented to optimize the K-storage behavior, resulting into a high specific capacity of 167 mAh/g after 100 cycles at 50 mA/g and 114 mAh/g even at 500 mA/g in the 3 M KFSI/ DME electrolytes.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Efficient K‐Storage of Fe‐Coupled Organic Molecule Anode in Ether‐Based Electrolytes

Shen

Chen

Lai

et al. 2023

Chemistry A European J

View full text Add to dashboard Cite

show abstract

“…[ 2 ] In recent years, potassium‐ion batteries (PIBs) have attracted increasing attention as a promising alternative candidate for LIBs due to the abundant source of potassium and the low redox potential (−2.93 V vs the standard hydrogen electrode) of K/K + couple. [ 3–5 ] Unfortunately, in comparison with Li ions in LIBs, the K ions in PIBs have oversized ionic radius (1.38 Å for K ions vs. 0.76 Å for Li ions), resulting in more sluggish diffusion kinetics and larger volumetric expansion of anodes. [ 6,7 ] These issues are seriously amplified under high current densities and large areal capacities that are demanded for next‐generation batteries.…”

Section: Introductionmentioning

confidence: 99%

Pseudocapacitive Potassium‐Ion Intercalation Enabled by Topologically Defective Soft Carbon toward High‐Rate, Large‐Areal‐Capacity, and Low‐Temperature Potassium‐Ion Batteries

Yang

Huang

Liu

et al. 2023

Small

View full text Add to dashboard Cite

Carbonaceous materials are widely investigated as anodes for potassium‐ion batteries (PIBs). However, the inferior rate capability, low areal capacity, and limited working temperature caused by sluggish K‐ions diffusion kinetics are still primary challenges for carbon‐based anodes. Herein, a simple temperature‐programmed co‐pyrolysis strategy is proposed for the efficient synthesis of topologically defective soft carbon (TDSC) based on inexpensive pitch and melamine. The skeletons of TDSC are optimized with shortened graphite‐like microcrystals, enlarged interlayer spacing, and abundant topological defects (e.g., pentagons, heptagons, and octagons), which endow TDSC with fast pseudocapacitive K‐ion intercalation behavior. Meanwhile, micrometer‐sized structure can reduce the electrolyte degradation over particle surface and avoid unnecessary voids, ensuring a high initial Coulombic efficiency as well as high energy density. These synergistic structural advantages contribute to excellent rate capability (116 mA h g−1 at 20 C), impressive areal capacity (1.83 mA h cm−2 with a mass loading of 8.32 mg cm−2), long‐term cycling stability (capacity retention of 91.8% after 1200 h cycling), and low working temperature (−10 °C) of TDSC anodes, demonstrating great potential for the practical application of PIBs.

show abstract

“…Many cathode materials, belonging to the same families of those already studied for Li-ion and Na-ion batteries (LIBs and NIBs, respectively), have been studied so far. , Among them, one could cite vanadium phosphates or Prussian Blue analogues as well as transition metal (TM) oxides including those based on manganese . With regard to the latter family, it is interesting to point out that in the system K–Mn–O, only layered phases with the general formula K x MnO 2 have been reported as possible cathode materials for KIBs.…”

mentioning

confidence: 99%

“…2,3 Among them, one could cite vanadium phosphates or Prussian Blue analogues 4 as well as transition metal (TM) oxides including those based on manganese. 5 With regard to the latter family, it is interesting to point out that in the system K−Mn−O, only layered phases with the general formula K x MnO 2 have been reported as possible cathode materials for KIBs. The layered K x MnO 2 family was first described by Delmas and coworkers 6,7 and more recently by Kubota and co-workers.…”

mentioning

confidence: 99%

K₃MnO₄: A New Cathode Material for K-Ion Batteries

Sagot,

Stievano,

Pralong

2023

ACS Appl. Energy Mater.

View full text Add to dashboard Cite

In the search for materials used as active species in cathodes for K-ion batteries, only a few compositions of transition metal oxides or transition metal polyanionic frameworks have been proposed so far. In this work, we report for the first time the synthesis and study of the electrochemical activity an original K 3 MnO 4 polymorph. This phase is a 0D-type structure made of isolated MnO 4 tetrahedra surrounded by K + ions. A reversible charge capacity of almost one K + per unit formula at the average voltage of 2.3 V vs K + /K is obtained, leading to the reversible formation of K 2 MnO 4 through a biphasic process.

show abstract

Cocoon-shaped P3-type K0.5Mn0.7Ni0.3O2 as an advanced cathode material for potassium-ion batteries

Cited by 40 publications

References 44 publications

Efficient K‐Storage of Fe‐Coupled Organic Molecule Anode in Ether‐Based Electrolytes

Efficient K‐Storage of Fe‐Coupled Organic Molecule Anode in Ether‐Based Electrolytes

Pseudocapacitive Potassium‐Ion Intercalation Enabled by Topologically Defective Soft Carbon toward High‐Rate, Large‐Areal‐Capacity, and Low‐Temperature Potassium‐Ion Batteries

K₃MnO₄: A New Cathode Material for K-Ion Batteries

Contact Info

Product

Resources

About

Cocoon-shaped P3-type K0.5Mn0.7Ni0.3O2 as an advanced cathode material for potassium-ion batteries

Cited by 40 publications

References 44 publications

Efficient K‐Storage of Fe‐Coupled Organic Molecule Anode in Ether‐Based Electrolytes

Efficient K‐Storage of Fe‐Coupled Organic Molecule Anode in Ether‐Based Electrolytes

Pseudocapacitive Potassium‐Ion Intercalation Enabled by Topologically Defective Soft Carbon toward High‐Rate, Large‐Areal‐Capacity, and Low‐Temperature Potassium‐Ion Batteries

K3MnO4: A New Cathode Material for K-Ion Batteries

Contact Info

Product

Resources

About

K₃MnO₄: A New Cathode Material for K-Ion Batteries