Selenium in nitrogen-doped microporous carbon spheres for high-performance lithium–selenium batteries

2015 ◽  
Vol 3 (8) ◽  
pp. 4539-4546 ◽  
Author(s):  
Yong Jiang ◽  
Xiaojian Ma ◽  
Jinkui Feng ◽  
Shenglin Xiong
Keyword(s):  
Electrochemical Performance ◽  
Cathode Material ◽  
High Performance ◽  
Rate Capability ◽  
Reversible Capacity ◽  
Microporous Carbon ◽  
Carbon Spheres ◽  
Direct Transformation ◽  
Nitrogen Doped ◽  
Cycling Process

An integrated composite with confined selenium within nitrogen-doped microporous carbon spheres as a new cathode material can realise the direct transformation between Se atoms and Li2Se in the cycling process, resulting in unprecedented electrochemical performance based on reversible capacity, cycling stability, and rate capability.

Synthesis and Electrochemical Performance of SnO2/Graphene Hybrid Anode for Lithium Ion Batteries

2013 ◽  
Vol 1540 ◽  
Author(s):  
Chia-Yi Lin ◽  
Chien-Te Hsieh ◽  
Ruey-Shin Juang
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Anode Material ◽  
High Performance ◽  
Coulombic Efficiency ◽  
Rate Capability ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Cycling Performance ◽  
Homogeneous Distribution

ABSTRACTAn efficient microwave-assisted polyol (MP) approach is report to prepare SnO2/graphene hybrid as an anode material for lithium ion batteries. The key factor to this MP method is to start with uniform graphene oxide (GO) suspension, in which a large amount of surface oxygenate groups ensures homogeneous distribution of the SnO2 nanoparticles onto the GO sheets under the microwave irradiation. The period for the microwave heating only takes 10 min. The obtained SnO2/graphene hybrid anode possesses a reversible capacity of 967 mAh g-1 at 0.1 C and a high Coulombic efficiency of 80.5% at the first cycle. The cycling performance and the rate capability of the hybrid anode are enhanced in comparison with that of the bare graphene anode. This improvement of electrochemical performance can be attributed to the formation of a 3-dimensional framework. Accordingly, this study provides an economical MP route for the fabrication of SnO2/graphene hybrid as an anode material for high-performance Li-ion batteries.

Porous nitrogen-doped carbon derived from silk fibroin protein encapsulating sulfur as a superior cathode material for high-performance lithium–sulfur batteries

Nanoscale ◽  
2015 ◽  
Vol 7 (42) ◽  
pp. 17791-17797 ◽  
Author(s):  
Jiawei Zhang ◽  
Yurong Cai ◽  
Qiwei Zhong ◽  
Dongzhi Lai ◽  
Juming Yao
Keyword(s):  
Electrochemical Performance ◽  
Cathode Material ◽  
Silk Fibroin ◽  
High Performance ◽  
Carbon Substrate ◽  
Nitrogen Doped ◽  
Lithium Sulfur Batteries ◽  
Nitrogen Doped Carbon ◽  
Lithium Sulfur

The features of a carbon substrate are crucial for the electrochemical performance of lithium–sulfur (Li–S) batteries.

scholarly journals Facile Synthesis of Nitrogen-Doped Microporous Carbon Spheres for High Performance Symmetric Supercapacitors

2018 ◽  
Vol 13 (1) ◽  
Author(s):  
Zhongguan Liang ◽  
Hao Liu ◽  
Jianping Zeng ◽  
Jianfei Zhou ◽  
Hongjian Li ◽  
...  
Keyword(s):  
High Performance ◽  
Microporous Carbon ◽  
Carbon Spheres ◽  
Facile Synthesis ◽  
Nitrogen Doped

Nitrogen-doped carbon-coated Ti–Fe–O nanocomposites with enhanced reversible capacity and rate capability for high-performance lithium-ion batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (69) ◽  
pp. 65266-65274 ◽  
Author(s):  
Tao Li ◽  
Xue Bai ◽  
Ning Lun ◽  
Yong-Xin Qi ◽  
Yun Tian ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
High Performance ◽  
Rate Capability ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Cycling Performance ◽  
Molar Ratio ◽  
Nitrogen Doped ◽  
Carbon Coated ◽  
Nitrogen Doped Carbon

An N-doped carbon-coated Ti–Fe–O multicomponent nanocomposite with a moderate Ti/Fe molar ratio of 1 : 2 exhibits good cycling performance as well as outstanding rate capability.

scholarly journals Nitrogen-Doped Hierarchical Meso/Microporous Carbon from Bamboo Fungus for Symmetric Supercapacitor Applications

Molecules ◽  
2019 ◽  
Vol 24 (20) ◽  
pp. 3677 ◽  
Author(s):  
Zhanghua Zou ◽  
Yu Lei ◽  
Yingming Li ◽  
Yanhua Zhang ◽  
Wei Xiao
Keyword(s):  
High Performance ◽  
High Current Density ◽  
Rate Capability ◽  
Cost Effective ◽  
Maximum Energy ◽  
Electrode System ◽  
Microporous Carbon ◽  
Nitrogen Doped ◽  
Renewable Biomass ◽  
Symmetric Supercapacitor

We report the synthesis of nitrogen-doped hierarchical meso/microporous carbon using renewable biomass bamboo fungus as precursor via two-step pyrolysis processes. It is found that the developed porous carbon (NHPC-800) features honeycomb-like cellular framework with well-developed porosity, huge specific surface area (1708 m2 g−1), appropriate nitrogen-doping level (3.2 at.%) and high mesopore percentage (25.5%), which are responsible for its remarkable supercapacitive performances. Electrochemical tests suggest that the NHPC-800 electrode offers the largest specific capacitance of 228 F g−1, asplendid rate capability and stable electrochemical behaviors in a traditional three-electrode system. Additionally, asymmetric supercapacitor device is built based on this product as well. An individual as-assembled supercapacitor of NHPC-800//NHPC-800 delivers the maximum energy density of 4.3 Wh kg−1; retains the majority of capacitanceat large current densities; and shows terrific cycling durability with negligible capacitance drop after long-term charge/discharge for beyond 10,000 cycles even at a high current density of 10 A g−1. These excellent supercapacitive properties of NHPC-800 in both three- and two-electrode setups outperform those of lots of biomass-derived porous carbons and thus make it a perspective candidate for producing cost-effective and high-performance supercapacitors

Self-assembly synthesis of nitrogen-doped mesoporous carbons used as high-performance electrode materials in lithium-ion batteries and supercapacitors

2017 ◽  
Vol 41 (21) ◽  
pp. 12901-12909 ◽  
Author(s):  
Chunfeng Shao ◽  
Ziqiang Wang ◽  
Errui Wang ◽  
Shujun Qiu ◽  
Hailiang Chu ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Self Assembly ◽  
High Performance ◽  
Electrode Materials ◽  
Lithium Ion ◽  
Mesoporous Carbons ◽  
Nitrogen Doped ◽  
First Time ◽  
Enhanced Electrochemical Performance

Guanine was, for the first time, used as a nitrogen source during the synthesis of nitrogen-doped porous carbons (NMCs) with enhanced electrochemical performance.

Highly ordered nanoscale phosphomolybdate-grafted polyaniline/metal hybrid layered structures prepared via secondary sputtering phenomenon as high-performance pseudocapacitor electrodes

2021 ◽  
Author(s):  
Eun Seop Yoon ◽  
Bong Gill Choi ◽  
Hwan-Jin Jeon
Keyword(s):  
Electron Transfer ◽  
Aspect Ratio ◽  
Electrochemical Performance ◽  
High Aspect Ratio ◽  
High Performance ◽  
Electrode Materials ◽  
Rate Capability ◽  
High Specific Capacitance ◽  
High Rate ◽  
Large Area

Abstract The development of energy storage electrode materials is important for enhancing the electrochemical performance of supercapacitors. Despite extensive research on improving electrochemical performance with polymer-based materials, electrode materials with micro/nanostructures are needed for fast and efficient ion and electron transfer. In this work, highly ordered phosphomolybdate (PMoO)-grafted polyaniline (PMoO-PAI) deposited onto Au hole-cylinder nanopillar arrays is developed for high-performance pseudocapacitors. The three-dimensional nanostructured arrays are easily fabricated by secondary sputtering lithography, which has recently gained attention and features a high resolution of 10 nm, a high aspect ratio greater than 20, excellent uniformity/accuracy/precision, and compatibility with large area substrates. These 10nm scale Au nanostructures with a high aspect ratio of ~30 on Au substrates facilitate efficient ion and electron transfer. The resultant PMoO-PAI electrode exhibits outstanding electrochemical performance, including a high specific capacitance of 114 mF/cm2, a high-rate capability of 88%, and excellent long-term stability.

Mixed-Valent Vanadium Oxide Cathode with Ultrahigh Rate Capability for Aqueous Zinc-Ion Battery

2021 ◽  
Author(s):  
Shenglong Li ◽  
Xiujuan Wei ◽  
Haopeng Chen ◽  
Guoyong Lai ◽  
Xuanpeng Wang ◽  
...  
Keyword(s):  
Cathode Material ◽  
Vanadium Oxide ◽  
High Performance ◽  
Rate Capability ◽  
Zinc Ion ◽  
Commercial Application ◽  
Oxide Cathode

The development of high-performance cathode material is the key to realize commercial application of zinc-ion batteries (ZIBs). Vanadium-based materials have been used as cathode candidate for ZIBs due to their...

Sign in / Sign up

Export Citation Format

Share Document