Potassium-ion storage behavior of microstructure-engineered hard carbons

2022 ◽  
Author(s):  
Hoseong Kim ◽  
Jong Chan Hyun ◽  
Ji In Jung ◽  
Jin Bae Lee ◽  
Jaewon Choi ◽  
...  
Keyword(s):  
Solid Solution ◽  
Carbon Materials ◽  
Potassium Ion ◽  
Graphitic Carbon ◽  
Ion Storage ◽  
Storage Behavior ◽  
Ion Intercalation

A distinctive solid-solution potassium-ion intercalation behavior of disordered graphitic carbon materials was observed.

scholarly journals K0.36(H2O)yWS2: a new layered compound for reversible hydrated potassium ion intercalation in aqueous electrolyte

RSC Advances ◽  
2019 ◽  
Vol 9 (55) ◽  
pp. 32323-32327 ◽  
Author(s):  
Yuanlv Mao ◽  
Miao Xie ◽  
Wei Zhao ◽  
Kaidi Yuan ◽  
Yuqiang Fang ◽  
...  
Keyword(s):  
Aqueous Electrolyte ◽  
Potassium Ion ◽  
Layered Compound ◽  
Two Dimensional ◽  
Compound K ◽  
Ion Storage ◽  
Ion Intercalation

This work reports the synthesis of a new quasi two-dimensional layered compound, K0.36(H2O)yWS2, for aqueous potassium ion storage.

Tuning the nitrogen-doping configuration in carbon materials via sulfur doping for ultrastable potassium ion storage

2021 ◽  
Author(s):  
Fangcai Zheng ◽  
Yang Xu ◽  
Changlai Wang ◽  
Ping Niu ◽  
Zhiqiang Li ◽  
...  
Keyword(s):  
Nitrogen Doping ◽  
Carbon Materials ◽  
Potassium Ion ◽  
Nitrogen Doped ◽  
Sulfur Doping ◽  
Promising Strategy ◽  
Ion Storage ◽  
Nitrogen Doped Carbon ◽  
Pyridinic N

Nitrogen doping is a promising strategy to improve potassium-storage performances in carbon materials. It is found that graphitic-N, pyridinic-N and pyrrodic-N always coexist in nitrogen-doped carbon materials prepared by typical...

High Potassium Ion Storage Capacity with Long Cycling Stability Enables by Sustainable Oxygen-Rich Carbon Nanosheets

Nanoscale ◽  
2021 ◽  
Author(s):  
Xuechun Li ◽  
Huanlei Wang ◽  
Wenzhe Zhang ◽  
Wenrui Wei ◽  
Ranxia Liao ◽  
...  
Keyword(s):  
Carbon Materials ◽  
Storage Capacity ◽  
Specific Capacity ◽  
Potassium Ion ◽  
Cycling Stability ◽  
High Potassium ◽  
Carbon Nanosheets ◽  
Ion Storage ◽  
Kinetics Of

The development of carbon materials for potassium storage is limited by the low specific capacity and poor cycling stability due to the sluggish kinetics of K ions. Herein, fucoidan-derived oxygen-rich...

Phosphorus and oxygen dual-doped graphene as superior anode material for room-temperature potassium-ion batteries

2017 ◽  
Vol 5 (17) ◽  
pp. 7854-7861 ◽  
Author(s):  
Guangyao Ma ◽  
Kangsheng Huang ◽  
Jia-Sai Ma ◽  
Zhicheng Ju ◽  
Zheng Xing ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Anode Material ◽  
Room Temperature ◽  
Carbon Materials ◽  
Potassium Ion ◽  
Graphitic Carbon ◽  
Potassium Ions ◽  
Doped Graphene

The intercalation of potassium ions into graphitic carbon materials has been demonstrated to be feasible while the electrochemical performance of the potassium-ion battery (PIB) is still unsatisfactory.

scholarly journals Confining TiO2 Nanotubes in PECVD-Enabled Graphene Capsules Toward Ultrafast K-Ion Storage: In Situ TEM/XRD Study and DFT Analysis

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Jingsheng Cai ◽  
Ran Cai ◽  
Zhongti Sun ◽  
Xiangguo Wang ◽  
Nan Wei ◽  
...  
Keyword(s):  
Rate Capability ◽  
Chemical Vapor ◽  
Potassium Ion ◽  
In Situ Tem ◽  
Practical Applications ◽  
Ion Storage ◽  
Wide Availability ◽  
Storage Behavior ◽  
Storage Technologies

AbstractTitanium dioxide (TiO2) has gained burgeoning attention for potassium-ion storage because of its large theoretical capacity, wide availability, and environmental benignity. Nevertheless, the inherently poor conductivity gives rise to its sluggish reaction kinetics and inferior rate capability. Here, we report the direct graphene growth over TiO2 nanotubes by virtue of chemical vapor deposition. Such conformal graphene coatings effectively enhance the conductive environment and well accommodate the volume change of TiO2 upon potassiation/depotassiation. When paired with an activated carbon cathode, the graphene-armored TiO2 nanotubes allow the potassium-ion hybrid capacitor full cells to harvest an energy/power density of 81.2 Wh kg−1/3746.6 W kg−1. We further employ in situ transmission electron microscopy and operando X-ray diffraction to probe the potassium-ion storage behavior. This work offers a viable and versatile solution to the anode design and in situ probing of potassium storage technologies that is readily promising for practical applications.

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