Synthesis of yolk‐shell‐structured iron monosulfide‐carbon microspheres and understanding of their conversion reaction for potassium‐ion storage

2021 ◽  
Author(s):  
Ju Hyeong Kim ◽  
Gi Dae Park ◽  
Yun Chan Kang
Keyword(s):  
Potassium Ion ◽  
Carbon Microspheres ◽  
Conversion Reaction ◽  
Ion Storage ◽  
Iron Monosulfide

Porous hard carbon spheres derived from biomass for high-performance sodium/potassium-ion batteries

2021 ◽  
Vol 33 (5) ◽  
pp. 055401
Author(s):  
Shuijiao Chen ◽  
Kejian Tang ◽  
Fei Song ◽  
Zhichao Liu ◽  
Nan Zhang ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Metal Ion ◽  
High Performance ◽  
Potassium Ion ◽  
Waste Biomass ◽  
Carbon Microspheres ◽  
Carbon Spheres ◽  
Hard Carbon ◽  
Sodium Potassium ◽  
Ion Storage

Abstract Hard carbon is the most attractive anode material for electrochemical sodium/potassium-ion storage. The preparation of hard carbon spheres directly from the broad sources of biomass is of great interest but barely reported. Herein, we developed a simple two-step hydrothermal method to construct porous carbon microspheres directly from the original waste biomass of camellia shells. The porous carbon microspheres have high specific capacities of 250 mAh g−1 and 264.5 mAh g−1 at a current density of 100 mA g−1 for sodium-ion batteries and potassium-ion batteries, respectively. And it has excellent cycle stability for sodium ions and potassium ions outperforming most reported hard carbons, which is mainly attributed to the microporous structure and spherical morphology. The work paves a way to prepare porous hard carbon spheres directly from biomass for alkali metal-ion batteries.

Porous carbon microspheres with highly graphitized structure for potassium-ion storage

2020 ◽  
Vol 577 ◽  
pp. 48-53 ◽  
Author(s):  
Seung Ho Choi ◽  
Jesse Baucom ◽  
Xinru Li ◽  
Li Shen ◽  
Young-Hoon Seong ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Potassium Ion ◽  
Carbon Microspheres ◽  
Ion Storage

Phenolic resin-based carbon microspheres for potassium ion storage

2020 ◽  
Vol 506 ◽  
pp. 144805 ◽  
Author(s):  
Shuo Wang ◽  
Yanyan Li ◽  
Fanteng Ma ◽  
Xiaozhong Wu ◽  
Pengfei Zhou ◽  
...  
Keyword(s):  
Phenolic Resin ◽  
Potassium Ion ◽  
Carbon Microspheres ◽  
Ion Storage

Spatially confined synthesis of a flexible and hierarchically porous three-dimensional graphene/FeP hollow nanosphere composite anode for highly efficient and ultrastable potassium ion storage

2020 ◽  
Vol 8 (6) ◽  
pp. 3369-3378 ◽  
Author(s):  
Zhifang Zhang ◽  
Chenxiao Wu ◽  
Zhonghui Chen ◽  
Huiyu Li ◽  
Haijing Cao ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Hollow Structure ◽  
Potassium Ion ◽  
Composite Anode ◽  
Hollow Nanosphere ◽  
Free Standing ◽  
Conversion Reaction ◽  
Hierarchically Porous ◽  
Hierarchical Porous ◽  
Ion Storage

A hierarchical, porous, three-dimensional graphene encapsulated FeP hollow nanosphere composite was constructed as a flexible free-standing electrode for KIBs. The formation of the hollow structure and the conversion reaction were elucidated.

Red phosphorus embedded in TiO2/C nanofibers to enhance the potassium-ion storage performance

Nanoscale ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 6635-6643
Author(s):  
Die Su ◽  
Jing Dai ◽  
Min Yang ◽  
Jiaxing Wen ◽  
Jianping Yang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Electronic Conductivity ◽  
Potassium Ion ◽  
Special Structure ◽  
Red Phosphorus ◽  
Storage Performance ◽  
Ion Storage

TiO2-RP/CN was fabricated and found to possess a special structure and an excellent electronic conductivity, and the electrodes show outstanding energy storage in K half/full cells.

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