Pseudocapacitive titanium oxynitride mesoporous nanowires with iso-oriented nanocrystals for ultrahigh-rate sodium ion hybrid capacitors

被引：100

作者：

Dong, Jun ^{[1
]}

Jiang, Yalong ^{[1
]}

Li, Qidong ^{[1
]}

Wei, Qiulong ^{[1
,2
]}

Yang, Wei ^{[1
]}

Tan, Shuangshuang ^{[1
]}

Xu, Xu ^{[1
]}

An, Qinyou ^{[1
]}

Mai, Liqiang ^{[1
,3
]}

机构：

[1] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Int Sch Mat Sci & Engn, Wuhan 430070, Peoples R China

[2] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA

[3] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2017年 / 5卷 / 22期

基金：

中国国家自然科学基金;

关键词：

ELECTROCHEMICAL ENERGY-STORAGE; RECHARGEABLE LITHIUM BATTERIES; HIGH-PERFORMANCE; NITRIDE NANOWIRES; THIN-FILMS; SUPERCAPACITORS; ELECTRODES; GRAPHENE; ANODE; CHEMISTRY;

D O I：

10.1039/c7ta00463j

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Titanium oxynitride mesoporous nanowires (Ti(O,N)-MP-NWs) composed of iso-oriented interconnected nanocrystals with [100] preferred orientation and tunable O/N ratios are synthesized, based on an anion exchange process. By investigating the electrochemical performance, it is found to exhibit high pseudocapacitive sodium storage performance, demonstrated by kinetic analysis and experimental characterizations. Subsequently, the assembled asymmetric hybrid sodium ion capacitor (AC//Ti(O,N)) exhibits high energy and power densities. Our work proposes the high pseudocapacitance in non-aqueous sodium ion system is very promising for high-power and low-cost energy storage applications.

引用

页码：10827 / 10835

页数：9

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