Nitrogen/oxygen co-doped mesoporous carbon octahedrons for high-performance potassium-ion batteries

2019 ◽  
Vol 7 (19) ◽  
pp. 12317-12324 ◽  
Author(s):  
Guoliang Xia ◽  
Changlai Wang ◽  
Peng Jiang ◽  
Jian Lu ◽  
Jiefeng Diao ◽  
...  
Keyword(s):  
Mesoporous Carbon ◽  
High Performance ◽  
Reversible Capacity ◽  
Potassium Ion ◽  
Cycle Life ◽  
Co Doped

As an anode for KIBs, the MCO electrode shows an ultralong cycle life and maintains a reversible capacity of 80 mA h g−1.

scholarly journals UIO-66-NH2-derived mesoporous carbon used as a high-performance anode for the potassium-ion battery

RSC Advances ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 1039-1049
Author(s):  
Yanchen Liu ◽  
Bin Huang ◽  
Long Zheng ◽  
Muyuan Shen ◽  
Zonghua Pu ◽  
...  
Keyword(s):  
Carbon Material ◽  
Mesoporous Carbon ◽  
High Performance ◽  
Reversible Capacity ◽  
Potassium Ion ◽  
Solvent Diffusion ◽  
High Reversible Capacity ◽  
Pyrolysis Method ◽  
Mesoporous Carbon Material

The N-doped mesoporous carbon material prepared by a double-solvent diffusion pyrolysis method with UIO-66-NH2 as a precursor can deliver a high reversible capacity of 346 mA h g−1 at 100 mA g−1 when used as an anode for non-aqueous KIBs.

An ionic liquid based sodium metal-hybrid supercapacitor-battery

2018 ◽  
Vol 2 (4) ◽  
pp. 763-771 ◽  
Author(s):  
Tiago C. Mendes ◽  
Fengling Zhou ◽  
Anders J. Barlow ◽  
Maria Forsyth ◽  
Patrick C. Howlett ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Mesoporous Carbon ◽  
High Performance ◽  
Hybrid Supercapacitor ◽  
Carbon Cathode ◽  
Metal Anode ◽  
Sodium Metal ◽  
Co Doped

N/S co-doped mesoporous carbon cathode paired with Na metal anode in a non-flammable electrolyte results in a sustainable and high-performance supercapacitor-battery.

A stable Li-deficient oxide as high-performance cathode for advanced lithium-ion batteries

2015 ◽  
Vol 51 (15) ◽  
pp. 3231-3234 ◽  
Author(s):  
Peiyu Hou ◽  
Jie Wang ◽  
Jishun Song ◽  
Dawei Song ◽  
Xixi Shi ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
High Performance ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Cycle Life

A stable Li-deficient Li0.35Ni0.2Co0.1Mn0.7O2−x surprisingly delivers large reversible capacity (251.3 mA h g−1), outstanding cycle life and a low median-voltage of 2.7 V in the range of 2.0–4.9 V.

Lotus Leaf-Derived Hierarchically Porous Hard Carbon Nanosheets as Anode for Highly Robust Potassium-Ion Batteries

2020 ◽  
Vol 12 (3) ◽  
pp. 392-399
Author(s):  
Xiang Xiao ◽  
Shun Li ◽  
Kai Yuan
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Retention Rate ◽  
Reversible Capacity ◽  
Potassium Ion ◽  
Potassium Ions ◽  
Void Space ◽  
Lotus Leaf ◽  
Hierarchically Porous ◽  
Volume Dilatation

Owing to abundant resources, low redox potential, and low expense, potassium-ion batteries (PIBs) have received continuous attention as a rookie of renewable electricity storage equipment. To obtain high-performance PIBs based energy storage, the energy storage anode must provide a stable and suitable structure for large-sized active potassium ions. To this end, a lotus leaf-derived, hierarchically porous activated carbon (LHPAC) was mainly obtained by a bionic strategy. The prepared LHPAC with a hierarchically porous structure not only affords fast transportation for both electrons and potassium ions but also supplies the necessary void space to avoid structural instability incurred by volume dilatation in the process of electrode operation. Therefore, the LHPAC exhibited exceptional reversible capacity (170 mA · h · g–1 at 50 mA · g–1) and superb cycle solidity (0.016% tiny capacity attenuation per cycle at 200 mA · g–1, capacity retention rate of 86.3% after 870 cycles), as well as inimitable rate performance. This work demonstrates the great application prospects of biomass-derived carbon materials as anode for sturdy PIBs.

scholarly journals A General Self-Sacrifice Template Strategy to 3D Heteroatom-Doped Macroporous Carbon for High-Performance Potassium-Ion Hybrid Capacitors

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Junwei Li ◽  
Xiang Hu ◽  
Guobao Zhong ◽  
Yangjie Liu ◽  
Yaxin Ji ◽  
...  
Keyword(s):  
Energy Density ◽  
High Performance ◽  
Density Functional ◽  
High Energy ◽  
Potassium Ion ◽  
High Energy Density ◽  
Capacitance Performance ◽  
Hybrid Capacitors ◽  
Co Doped ◽  
Macroporous Carbon

AbstractPotassium-ion hybrid capacitors (PIHCs) tactfully combining capacitor-type cathode with battery-type anode have recently attracted increasing attentions due to their advantages of decent energy density, high power density, and low cost; the mismatches of capacity and kinetics between capacitor-type cathode and battery-type anode in PIHCs yet hinder their overall performance output. Herein, based on prediction of density functional theory calculations, we find Se/N co-doped porous carbon is a promising candidate for K+ storage and thus develop a simple and universal self-sacrifice template method to fabricate Se and N co-doped three-dimensional (3D) macroporous carbon (Se/N-3DMpC), which features favorable properties of connective hierarchical pores, expanded interlayer structure, and rich activity site for boosting pseudocapacitive activity and kinetics toward K+ storage anode and enhancing capacitance performance for the reversible anion adsorption/desorption cathode. As expected, the as-assembled PIHCs full cell with a working voltage as high as 4.0 V delivers a high energy density of 186 Wh kg−1 and a power output of 8100 W kg−1 as well as excellent long service life. The proof-of-concept PIHCs with excellent performance open a new avenue for the development and application of high-performance hybrid capacitors.

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