Electrochemical performance and redox mechanism of naphthalene hydrazine diimide polymer as a cathode in magnesium battery

被引：69

作者：

Bancic, Tanja ^{[1
,2
]}

Bitenc, Jan ^{[1
]}

Pirnat, Klemen ^{[1
]}

Lautar, Anja Kopac ^{[1
]}

Grdadolnik, Joze ^{[1
]}

Vitanova, Anna Randon ^{[3
]}

Dominko, Robert ^{[1
,2
,4
]}

机构：

[1] Natl Inst Chem, Hajdrihova 19, Ljubljana 1000, Slovenia

[2] Univ Ljubljana, Fac Chem & Chem Technol, Vecna Pot 113, Ljubljana 1000, Slovenia

[3] Honda R&D Europe GmbH, Carl Legien Str 30, D-63703 Offenbach, Germany

[4] Alistore ERI, Amiens, France

来源：

JOURNAL OF POWER SOURCES | 2018年 / 395卷

关键词：

Batteries; Electrochemistry; Energy storage; Magnesium; Polymers; ORGANIC ELECTRODE MATERIALS;

D O I：

10.1016/j.jpowsour.2018.05.051

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：

A magnesium (Mg) battery in the combination with the redox active polymers possesses attractive electrochemical properties as a future battery technology. This concept has been demonstrated by using quinone based polymers and the non-nucleophilic electrolytes, while polyimides were rarely investigated. In this work, a naphthalene-hydrazine diimide polymer (NP) has been tested as a cathode material for Mg organic battery in two different electrolytes. Average discharge voltage of the Mg-NP battery is 1.70 V with Coulombic efficiency above 99% in the TEGDME/DOL based electrolyte. The electrochemical mechanism was studied by in operando ATR IR spectroscopy and confirmed by DFT calculation of the IR spectra. We confirmed redox activity of carbonyl moieties, which undergo reversible reduction to enolate anion. Moreover, in operando IR spectroscopy shows charge delocalization in the reduced form since none of the bonds has pure single/double bond character.

引用

页码：25 / 30

页数：6

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