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Title:
High energy density sodium-ion capacitors through co-intercalation mechanism in diglyme-based electrolyte system
Author: Han, Pengxian1; Han, Xiaoqi1,2; Yao, Jianhua1; Zhang, Lixue1; Cao, Xiaoyan2; Huang ChangShui(黄长水)1; Cui GuangLei(崔光磊)1
Source: JOURNAL OF POWER SOURCES
Issued Date: 2015-11-30
Volume: 297, Issue:1, Pages:457-463
Keyword: Sodium ion capacitor ; Co-intercalation ; Diglyme ; Energy storage
DOI: 10.1016/j.jpowsour.2015.08.011
DOC Type: Article
English Abstract: A novel sodium-ion capacitor (NIC) was assembled using graphitic mesocarbon microbead anode and activated carbon cathode in diglyme-based electrolyte. Charge/discharge tests indicate that sodium ions can reversibly co-intercalated with diglyme solvent into graphite anode and show good rate performance. The energy densities of the NICs are as high as 93.5 and 86.5 Wh kg(-1) at 573 and 2832 W kg(-1) (equal to 4 C and 50 C) in the voltage window at 1-4 V, respectively. By optimizing the voltage ranges, the capacity retention of the NIC at 20 C is 98.3% even after 3000 cycles. Such superior electrochemical performance should be attributed to the reversible intercalated/deintercalated reaction of sodium ions and the formation of ternary graphite intercalation compounds in diglyme-based electrolyte. The present work pioneers new realms of hybrid energy storage system with high energy density, high power density and long cycle life. (C) 2015 Elsevier B.V. All rights reserved.
WOS Headings: Science & Technology ; Physical Sciences ; Technology
WOS Subject: Electrochemistry ; Energy & Fuels
WOS Subject Extended: Electrochemistry ; Energy & Fuels
WOS Keyword Plus: RECHARGEABLE LITHIUM BATTERIES ; CARBON ; PERFORMANCE ; CHALLENGES ; HYBRID ; GRAPHITE
Indexed Type: SCI
Language: 英语
WOS ID: WOS:000361772600056
Citation statistics:
Content Type: 期刊论文
URI: http://ir.qibebt.ac.cn/handle/337004/6604
Appears in Collections:仿生能源与储能系统团队_期刊论文

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description.institution: 1.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao Ind Energy Storage Res Inst, Qingdao 266101, Peoples R China
2.Ocean Univ China, Coll Chem & Chem Engn, Minist Educ, Key Lab Marine Chem Theory & Technol, Qingdao 266100, Peoples R China

Recommended Citation:
Han, Pengxian,Han, Xiaoqi,Yao, Jianhua,et al. High energy density sodium-ion capacitors through co-intercalation mechanism in diglyme-based electrolyte system[J]. JOURNAL OF POWER SOURCES,2015,297(1):457-463.
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