Next-Generation Activated Carbon Supercapacitors: A Simple Step in Electrode Processing Leads to Remarkable Gains in Energy Density

Hwang Jee Y.; Li Mengping; El-Kady Maher F.; Kaner Richard B.

首页> 外文期刊>Advanced Functional Materials >Next-Generation Activated Carbon Supercapacitors: A Simple Step in Electrode Processing Leads to Remarkable Gains in Energy Density

【24h】

Next-Generation Activated Carbon Supercapacitors: A Simple Step in Electrode Processing Leads to Remarkable Gains in Energy Density

机译：下一代活性炭超级电容器：电极加工中的简单步骤可带来显着的能量密度提升

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相似文献
相关主题

摘要

The global supercapacitor market has been growing rapidly during the past decade. Today, virtually all commercial devices use activated carbon. In this work, it is shown that laser treatment of activated carbon electrodes results in the formation of microchannels that can connect the internal pores of activated carbon with the surrounding electrolyte. These microchannels serve as electrolyte reservoirs that in turn shorten the ion diffusion distance and enable better interaction between the electrode surfaces and electrolyte ions. The capacitance can be further increased through fast and reversible redox reactions on the electrode surface using a redox-active electrolyte, enabling the operation of a symmetric device at 2.0 V, much higher than the thermodynamic decompostion voltage of water. This simple approach can alleviate the low energy density of supercapacitors which has limited the widespread use of this technology. This work represents a clear advancement in the processing of activated carbon electrodes toward the next-generation of low-cost supercapacitors.

机译：在过去的十年中，全球超级电容器市场一直在快速增长。如今，几乎所有商用设备都使用活性炭。在这项工作中，表明对活性炭电极进行激光处理会导致形成微通道，这些微通道可以将活性炭的内部孔与周围的电解质连接起来。这些微通道用作电解质储存器，从而缩短了离子扩散距离，并使电极表面与电解质离子之间的相互作用更好。通过使用氧化还原活性电解质在电极表面进行快速和可逆的氧化还原反应，可以进一步增加电容，从而使对称器件能够在2.0 V的电压下工作，该电压远高于水的热力学分解电压。这种简单的方法可以减轻超级电容器的低能量密度，这限制了该技术的广泛使用。这项工作代表了活性炭电极向下一代低成本超级电容器发展的明显进步。

著录项

来源
《Advanced Functional Materials》 |2017年第15期|1605745.1-1605745.9|共9页
作者
Hwang Jee Y.; Li Mengping; El-Kady Maher F.; Kaner Richard B.;
展开▼
作者单位

Univ Calif Los Angeles, Dept Chem & Biochem, Calif NanoSyst Inst, Los Angeles, CA 90095 USA;

Univ Calif Los Angeles, Dept Chem & Biochem, Calif NanoSyst Inst, Los Angeles, CA 90095 USA;

Univ Calif Los Angeles, Dept Chem & Biochem, Calif NanoSyst Inst, Los Angeles, CA 90095 USA|Cairo Univ, Fac Sci, Dept Chem, Giza 12613, Egypt;

Univ Calif Los Angeles, Dept Chem & Biochem, Calif NanoSyst Inst, Los Angeles, CA 90095 USA|Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA;

展开▼
收录信息
原文格式 PDF
正文语种 eng
中图分类
关键词

相似文献

外文文献
中文文献
专利

1. Simple and Cost-Effective Synthesis of Activated Carbon Anchored by Functionalized Multiwalled Carbon Nanotubes for High-Performance Supercapacitor Electrodes with High Energy Density and Power Density [J] . Mandal Manoranjan, Subudhi Subhasri, Alam Injamul, Journal of Electronic Materials . 2021,第5期

机译：通过具有高能量密度和功率密度的高性能超级普及电极堆放的官能化多壁碳纳米管固定的活性炭简单且经济高效合成
2. A super-high energy density asymmetric supercapacitor based on 3D core-shell structured NiCo-layered double hydroxide@carbon nanotube and activated polyaniline-derived carbon electrodes with commercial level mass loading [J] . Li Xiaocheng, Shen Juanjuan, Sun Wei, Journal of Materials Chemistry, A. Materials for energy and sustainability . 2015,第25期

机译：基于3D核-壳结构NiCo层状双氢氧化物@碳纳米管和活性聚苯胺衍生碳电极的超高能量密度不对称超级电容器，具有商业水平的质量负载
3. A method to increase the energy density of supercapacitor cells by the addition of multiwall carbon nanotubes into activated carbon electrodes [J] . F. Markoulidis, C. Lei, C. Lekakou Carbon: An International Journal Sponsored by the American Carbon Society . 2014,第Null期

机译：通过在活性炭电极中添加多壁碳纳米管来增加超级电容器电池能量密度的方法
4. Preparation of Activated Carbon Monolith Electrodes from Sugarcane Bagasse by Physical and Physical-chemical Activation Process for Supercapacitor Application [C] . E. Taer, lwantono, S. T. Manik International Conference on Advanced Materials Science and Technology . 2014

机译：超级电容器应用的物理化学活化工艺制备甘蔗甘蔗活化碳整体电极
5. Electrochemical Characterization of Vanadium Pentoxide (V 2O5) And Activated Carbon (AC) Electrodes in Multivalent Aluminum Nitrate (Al(NO3)3) Electrolyte for Battery-Type Hybrid Supercapacitor Applications [D] . Solanki, Ketan Subhash. 2016

机译：多价硝酸铝钒钒（V 2O5）和活性炭（AC）电极的电化学表征（Al（NO 3）3）电解质电池 - 型杂交超级电容器应用
6. Iron oxides nanobelt arrays rooted in nanoporous surface of carbon tube textile as stretchable and robust electrodes for flexible supercapacitors with ultrahigh areal energy density and remarkable cycling-stability [O] . Yuying Ding, Shaochun Tang, Rubing Han, -1

机译：氧化碳纳米带阵列植根于碳管织物的纳米孔表面作为可拉伸且坚固的电极用于具有超高面能量密度和出色循环稳定性的柔性超级电容器
7. Thermally Activated Multilayered Carbon Cloth as Flexible Supercapacitor Electrode Material with Significantly Enhanced Areal Energy Density [O] . Qinghua Wang, Wenhao Ren, Feng Gao, 2019

机译：作为柔性超级电容器电极材料的热活化多层碳布，具有显着提高的面能密度

Next-Generation Activated Carbon Supercapacitors: A Simple Step in Electrode Processing Leads to Remarkable Gains in Energy Density

摘要

著录项

相似文献

相关主题

期刊订阅