Unveiling of the energy storage mechanisms of multi -modified (Nb2O5@C)/rGO nanoarrays as anode for high voltage supercapacitors with formulated ionic liquid electrolytes
文献类型：期刊论文
| 作者 | Zhang, Jiahe1,2; Zhang, Haitao1; Zhang, Yaqin1; Zhang, Junwei3; He, Hongyan1; Zhang, Xixiang3; Shim, Jae-Jin4; Zhang, Suojiang1 |
| 刊名 | ELECTROCHIMICA ACTA
 |
| 出版日期 | 2019-08-01 |
| 卷号 | 313页码:532-543 |
| ISSN号 | 0013-4686 |
| 关键词 | Nanohybrid electrode Ionic liquid Asymmetric supercapacitor Storage mechanism |
| DOI | 10.1016/j.electacta.2019.04.160 |
| 英文摘要 | A better understanding of the energy-storage mechanisms in complex pseudocapacitive nanostructures is essential to improve the performances of nanohybrid supercapacitors. In this study, highly interface modified Nb2O5 nanoarrays, attached to graphene nanosheets, were carefully designed and synthesized. The electrochemical performances were evaluated in an organic electrolyte, a formulated ionic-liquid mixture electrolyte, and a nanocomposite ionogel electrolyte, respectively. The capacitive and faradaic storage contributions were assessed qualitatively in diverse electrolytes at various temperatures. The capacitive contribution in the ionic liquid electrolyte was found to rise with increasing temperature. A molecular dynamics simulation proved that the increased diffusion coefficient of large ions was much more pronounced than that of the small Li+ ions. A carefully optimized quasi-solid-state lithium ion capacitor, fabricated using a (Nb2O5@C)/rGO nanoarchitecture as the anode and an ionic liquid gel separator, delivered an energy density of 101 Wh kg(-1) and a power density of 24 kW kg(-1) at 60 degrees C. The efficient coupling between the nanohybrids and a complex ionogel electrolyte opens a new window for the rational design of high energy-density supercapacitors. (C) 2019 Elsevier Ltd. All rights reserved. |
| WOS关键词 | ASYMMETRIC SUPERCAPACITORS ; POLYMER ELECTROLYTE ; NB2O5 NANOCRYSTALS ; LI+-INTERCALATION ; CARBON NANOTUBES ; LITHIUM STORAGE ; ULTRAHIGH-RATE ; THIN-FILMS ; HIGH-POWER ; COMPOSITE |
| 资助项目 | National Key Research and Development Program of China[2016YFB0100303] ; Major Program of National Natural Science Foundation of China[21890762] ; National Natural Science Foundation of China[21878308] ; International Cooperation and Exchange of the National Natural Science Foundation of China[51561145020] |
| WOS研究方向 | Electrochemistry |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000470236500056 |
| 资助机构 | National Key Research and Development Program of China ; Major Program of National Natural Science Foundation of China ; National Natural Science Foundation of China ; International Cooperation and Exchange of the National Natural Science Foundation of China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/29925]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Zhang, Haitao; Zhang, Suojiang |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing Key Lab Ion Liquids Clean Proc, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China 3.King Abdullah Univ Sci & Technol, Div Phys Sci & Engn, Thuwal 239556900, Saudi Arabia 4.Yeungnam Univ, Sch Chem Engn, 280 Daehak Ro, Gyongsan 38541, Gyeongbuk, South Korea |
| 推荐引用方式 GB/T 7714 | Zhang, Jiahe,Zhang, Haitao,Zhang, Yaqin,et al. Unveiling of the energy storage mechanisms of multi -modified (Nb2O5@C)/rGO nanoarrays as anode for high voltage supercapacitors with formulated ionic liquid electrolytes[J]. ELECTROCHIMICA ACTA,2019,313:532-543. |
| APA | Zhang, Jiahe.,Zhang, Haitao.,Zhang, Yaqin.,Zhang, Junwei.,He, Hongyan.,...&Zhang, Suojiang.(2019).Unveiling of the energy storage mechanisms of multi -modified (Nb2O5@C)/rGO nanoarrays as anode for high voltage supercapacitors with formulated ionic liquid electrolytes.ELECTROCHIMICA ACTA,313,532-543. |
| MLA | Zhang, Jiahe,et al."Unveiling of the energy storage mechanisms of multi -modified (Nb2O5@C)/rGO nanoarrays as anode for high voltage supercapacitors with formulated ionic liquid electrolytes".ELECTROCHIMICA ACTA 313(2019):532-543. |
入库方式： OAI收割
来源：过程工程研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。