Enhanced performance for early transition metal nitrides via pseudocapacitance in protic ionic liquid electrolytes

被引：20

作者：

Djire, Abdoulaye ^{[1
,4
]}

Ishimwe, Jean Yves ^{[2
]}

Choi, Saemin ^{[1
,4
]}

Thompson, Levi T. ^{[1
,3
,4
]}

机构：

[1] Univ Michigan, Dept Chem Engn, Ann Arbor, MI 48109 USA

[2] Univ Michigan, Dept Elect Engn, Ann Arbor, MI 48109 USA

[3] Univ Michigan, Dept Mech Engn, Ann Arbor, MI 48109 USA

[4] Univ Michigan, Hydrogen Energy Technol Lab, Ann Arbor, MI 48109 USA

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2017年 / 77卷

关键词：

Nitride electrode materials; Non-aqueous pseudocapacitance; Protic ionic liquid electrolytes; CHARGE STORAGE; MOLYBDENUM; REDUCTION; TITANIUM; OXIDE; RUO2; VN;

D O I：

10.1016/j.elecom.2017.02.001

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Early transition metal nitrides achieve high capacitances via a pseudocapadtive mechanism that involves redox reactions with protons at their surfaces. Typically aqueous electrolytes are the source of protons, therefore the operating voltages are limited to similar to 1.2 V. Protic ionic liquid (PIL) based electrolytes offer the possibility of significantly higher operating voltages and energy densities. This paper describes the behavior of VN and TiN in a PIL consisting of 2-methylpyridine and trifluoroaceticadd.These nitrides can be cycled up to 2.0 V in this electrolyte. Voltammograms for VN and TiN in the PIL and aqueous electrolytes were similar suggesting similar pseudocapacitive mechanisms. The use of PIL electrolytes instead of aqueous electrolytes could significantly increase the energies of nitride-based supercapacitors without significant losses in power. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：19 / 23

页数：5

共 36 条

[1]

Andrzej L., 1999, Electrochemical Impedance Spectroscopy and its Application

[2]

[Anonymous], 1999, ELECTROCHEMICAL SUPE

[3] Three-dimensional nickel nitride (Ni3N) nanosheets: free standing and flexible electrodes for lithium ion batteries and supercapacitors [J].

Balogun, Muhammad-Sadeeq ;

Zeng, Yinxiang ;

Qiu, Weitao ;

Luo, Yang ;

Onasanya, Amos ;

Olaniyi, Titus K. ;

Tong, Yexiang .

JOURNAL OF MATERIALS CHEMISTRY A, 2016, 4 (25) :9844-9849

[4] Recent advances in metal nitrides as high-performance electrode materials for energy storage devices [J].

Balogun, Muhammad-Sadeeq ;

Qiu, Weitao ;

Wang, Wang ;

Fang, Pingping ;

Lu, Xihong ;

Tong, Yexiang .

JOURNAL OF MATERIALS CHEMISTRY A, 2015, 3 (04) :1364-1387

[5] Facile synthesis of titanium nitride nanowires on carbon fabric for flexible and high-rate lithium ion batteries [J].

Balogun, Muhammad-Sadeeq ;

Yu, Minghao ;

Li, Cheng ;

Zhai, Teng ;

Liu, Yi ;

Lu, Xihong ;

Tong, Yexiang .

JOURNAL OF MATERIALS CHEMISTRY A, 2014, 2 (28) :10825-10829

[6]

Bélanger D, 2008, ELECTROCHEM SOC INTE, V17, P49

[7] Thin films of pure vanadium nitride: Evidence for anomalous non-faradaic capacitance [J].

Bondarchuk, Oleksandr ;

Morel, Alban ;

Belanger, Daniel ;

Goikolea, Eider ;

Brousse, Thierry ;

Mysyk, Roman .

JOURNAL OF POWER SOURCES, 2016, 324 :439-446

[8] Fast and reversible surface redox reaction in nanocrystalline vanadium nitride supercapacitors [J].

Choi, Daiwon ;

Blomgren, George E. ;

Kumta, Prashant N. .

ADVANCED MATERIALS, 2006, 18 (09) :1178-+

[9] Chemically synthesized nanostructured VN for pseudocapacitor application [J].

Choi, DW ;

Kumta, PN .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2005, 8 (08) :A418-A422

[10]

Conway B.E., 1991, J. Electrochem. Soc, V6, P138

← 1 2 3 4 →