Nitrogen-doped mesoporous carbon as an anode material for high performance potassium-ion batteries

2020 ◽  
Vol 340 ◽  
pp. 135947
Author(s):  
Zhenping Qiu ◽  
KaiXiang Zhao ◽  
Jiaming Liu ◽  
Shubiao Xia
2018 ◽  
Vol 6 (31) ◽  
pp. 15162-15169 ◽  
Author(s):  
Yanzhen Liu ◽  
Chenghao Yang ◽  
Qichang Pan ◽  
Youpeng Li ◽  
Gang Wang ◽  
...  

Nitrogen-doped bamboo-like carbon nanotubes enable a simple intercalation of K+ ions and provide enough spaces to accommodate volume change.


2021 ◽  
Vol 8 (7) ◽  
pp. 2004142
Author(s):  
Wei Zong ◽  
Ningbo Chui ◽  
Zhihong Tian ◽  
Yuying Li ◽  
Chao Yang ◽  
...  

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Jiefeng Zheng ◽  
Yuanji Wu ◽  
Yong Tong ◽  
Xi Liu ◽  
Yingjuan Sun ◽  
...  

AbstractIn view of rich potassium resources and their working potential, potassium-ion batteries (PIBs) are deemed as next generation rechargeable batteries. Owing to carbon materials with the preponderance of durability and economic price, they are widely employed in PIBs anode materials. Currently, porosity design and heteroatom doping as efficacious improvement strategies have been applied to the structural design of carbon materials to improve their electrochemical performances. Herein, nitrogen-doped mesoporous carbon spheres (MCS) are synthesized by a facile hard template method. The MCS demonstrate larger interlayer spacing in a short range, high specific surface area, abundant mesoporous structures and active sites, enhancing K-ion migration and diffusion. Furthermore, we screen out the pyrolysis temperature of 900 °C and the pore diameter of 7 nm as optimized conditions for MCS to improve performances. In detail, the optimized MCS-7-900 electrode achieves high rate capacity (107.9 mAh g−1 at 5000 mA g−1) and stably brings about 3600 cycles at 1000 mA g−1. According to electrochemical kinetic analysis, the capacitive-controlled effects play dominant roles in total storage mechanism. Additionally, the full-cell equipped MCS-7-900 as anode is successfully constructed to evaluate the practicality of MCS.


2018 ◽  
Vol 287 ◽  
pp. 21-28 ◽  
Author(s):  
Min Zhao ◽  
Dong-Lin Zhao ◽  
Xin-Yao Han ◽  
Hui-Xian Yang ◽  
Ya-Jing Duan ◽  
...  

RSC Advances ◽  
2014 ◽  
Vol 4 (107) ◽  
pp. 62673-62677 ◽  
Author(s):  
Zhiguang Wang ◽  
Yueming Li ◽  
Xiao-Jun Lv

N-doped ordered mesoporous carbon preparedviaa template method showed improved electrochemical performance as an anode material in sodium ion batteries.


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