Nano-size porous carbon spheres as a high-capacity anode with high initial coulombic efficiency for potassium-ion batteries

2020 ◽  
Vol 5 (5) ◽  
pp. 895-903 ◽  
Author(s):  
Hehe Zhang ◽  
Chong Luo ◽  
Hanna He ◽  
Hong-Hui Wu ◽  
Li Zhang ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Porous Carbon ◽  
Coulombic Efficiency ◽  
High Capacity ◽  
Potassium Ion ◽  
Carbon Spheres ◽  
Hard Carbon ◽  
Porous Carbon Spheres ◽  
Nano Size ◽  
Initial Coulombic Efficiency

An anode of hard carbon spheres with both small size and a porous structure enables superior electrochemical performance of potassium-ion batteries.

Defects and sulfur-doping design of porous carbon spheres for high-capacity potassium-ion storage

2021 ◽  
Author(s):  
Ruling Huang ◽  
Xixue Zhang ◽  
Zexi Qu ◽  
Xiaodong Zhang ◽  
Jiao Lin ◽  
...  
Keyword(s):  
Energy Storage ◽  
Porous Carbon ◽  
High Capacity ◽  
Potassium Ion ◽  
Carbon Spheres ◽  
Hard Carbon ◽  
Capacitive Energy Storage ◽  
Heteroatom Doping ◽  
Ion Storage ◽  
Porous Carbon Spheres

Heteroatom-doping had been demonstrated to effectively improve the capacitive energy storage of hard carbon in potassium ion batteries (KIBs). However, the external defects introduced during doping process are responsible to...

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.

scholarly journals Effects of Annealing on Electrochemical Properties of Solvothermally Synthesized Cu2SnS3 Anode Nanomaterials

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Xiaoli Peng ◽  
Chong Wen ◽  
Qian Zhang ◽  
Hang Min ◽  
Yong Xiang ◽  
...  
Keyword(s):  
High Temperature ◽  
Electrochemical Performance ◽  
Solvothermal Method ◽  
Coulombic Efficiency ◽  
Scale Up ◽  
High Capacity ◽  
Lithium Ion ◽  
Cost Effective ◽  
High Temperature Annealing ◽  
Initial Coulombic Efficiency

AbstractCu2SnS3, as a modified material for high-capacity tin-based anodes, has great potential for lithium-ion battery applications. The solvothermal method is simple, convenient, cost-effective, and easy to scale up, and has thus been widely used for the preparation of nanocrystals. In this work, Cu2SnS3 nanoparticles were prepared by the solvothermal method. The effects of high-temperature annealing on the morphology, crystal structure, and electrochemical performance of a Cu2SnS3 nano-anode were studied. The experimental results indicate that high-temperature annealing improves the electrochemical performance of Cu2SnS3, resulting in higher initial coulombic efficiency and improved cycling and rate characteristics compared with those of the as-prepared sample.

N and S co-doped porous carbon spheres prepared using l-cysteine as a dual functional agent for high-performance lithium–sulfur batteries

2015 ◽  
Vol 51 (100) ◽  
pp. 17720-17723 ◽  
Author(s):  
Shuzhang Niu ◽  
Wei Lv ◽  
Guangmin Zhou ◽  
Yanbing He ◽  
Baohua Li ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Porous Carbon ◽  
High Performance ◽  
Carbon Microspheres ◽  
Carbon Spheres ◽  
Dual Functional ◽  
Lithium Sulfur Batteries ◽  
Porous Carbon Spheres ◽  
Co Doped ◽  
Lithium Sulfur

N and S co-doped porous carbon microspheres (NS-PCSs) prepared by using a dual functional agent, l-cysteine, show outstanding electrochemical performance in lithium sulfur batteries.

scholarly journals High Capacity and High Efficiency Maple Tree-Biomass-Derived Hard Carbon as an Anode Material for Sodium-Ion Batteries

Materials ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 1294 ◽  
Author(s):  
Yuesheng Wang ◽  
Zimin Feng ◽  
Wen Zhu ◽  
Vincent Gariépy ◽  
Catherine Gagnon ◽  
...  
Keyword(s):  
Anode Material ◽  
Coulombic Efficiency ◽  
Low Cost ◽  
Ethylene Carbonate ◽  
High Capacity ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Tree Biomass ◽  
Hard Carbon ◽  
Initial Coulombic Efficiency

Sodium-ion batteries (SIBs) are in the spotlight because of their potential use in large-scale energy storage devices due to the abundance and low cost of sodium-based materials. There are many SIB cathode materials under investigation but only a few candidate materials such as carbon, oxides and alloys were proposed as anodes. Among these anode materials, hard carbon shows promising performances with low operating potential and relatively high specific capacity. Unfortunately, its low initial coulombic efficiency and high cost limit its commercial applications. In this study, low-cost maple tree-biomass-derived hard carbon is tested as the anode for sodium-ion batteries. The capacity of hard carbon prepared at 1400 °C (HC-1400) reaches 337 mAh/g at 0.1 C. The initial coulombic efficiency is up to 88.03% in Sodium trifluoromethanesulfonimide (NaTFSI)/Ethylene carbonate (EC): Diethyl carbonate (DEC) electrolyte. The capacity was maintained at 92.3% after 100 cycles at 0.5 C rates. The in situ X-ray diffraction (XRD) analysis showed that no peak shift occurred during charge/discharge, supporting a finding of no sodium ion intercalates in the nano-graphite layer. Its low cost, high capacity and high coulombic efficiency indicate that hard carbon is a promising anode material for sodium-ion batteries.

Air-assisted activation strategy for porous carbon spheres to give enhanced electrochemical performance

RSC Advances ◽  
2016 ◽  
Vol 6 (19) ◽  
pp. 15313-15319 ◽  
Author(s):  
Huaqing Xuan ◽  
Yiliang Wang ◽  
Gaoxin Lin ◽  
Fan Wang ◽  
Lin Zhou ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Porous Carbon ◽  
Formaldehyde Resin ◽  
Carbon Spheres ◽  
Resorcinol Formaldehyde ◽  
Pore Structures ◽  
Porous Carbon Spheres ◽  
Enhanced Electrochemical Performance

Porous carbon spheres showing excellent pore structures and superior electrochemical performance were obtained from a resorcinol–formaldehyde resin by an air-assisted activation strategy.

Novel nitrogen-rich porous carbon spheres as a high-performance anode material for lithium-ion batteries

2014 ◽  
Vol 2 (39) ◽  
pp. 16617-16622 ◽  
Author(s):  
Dongdong Li ◽  
Liang-Xin Ding ◽  
Hongbin Chen ◽  
Suqing Wang ◽  
Zhong Li ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Anode Material ◽  
Porous Carbon ◽  
Self Assembly ◽  
High Performance ◽  
Lithium Ion ◽  
Carbon Spheres ◽  
Assembly Method ◽  
Porous Carbon Spheres

Novel nitrogen-rich porous carbon spheres with appropriate pores distribution are proposed and prepared by using a template-assisted self-assembly method, and exhibit superior electrochemical performance and show promise as the anode material for LIBs.

scholarly journals Nitrogen–sulfur dual-doped porous carbon spheres/sulfur composites for high-performance lithium–sulfur batteries

RSC Advances ◽  
2019 ◽  
Vol 9 (29) ◽  
pp. 16571-16577 ◽  
Author(s):  
Liping Zhao ◽  
Gang Liu ◽  
Peng Zhang ◽  
Liqun Sun ◽  
Lina Cong ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Porous Carbon ◽  
High Performance ◽  
Positive Electrode ◽  
Carbon Spheres ◽  
Excellent Electrochemical Performance ◽  
Lithium Sulfur Batteries ◽  
Porous Carbon Spheres ◽  
Lithium Sulfur

Simultaneously introduced nitrogen–sulfur through one reagent. The as-prepared PCS-NS/S composites exhibited excellent electrochemical performance as positive electrode for Li–S battery.

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