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An Organic Catalyst for Li–O 2 Batteries: Dilithium Quinone‐1,4‐Dicarboxylate
Author(s) -
Liu Jia,
Renault Stéven,
Brandell Daniel,
Gustafsson Torbjörn,
Edström Kristina,
Zhu Jiefang
Publication year - 2015
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201500381
Subject(s) - dilithium , catalysis , electrocatalyst , quinone , chemistry , overpotential , decomposition , lithium (medication) , inorganic chemistry , materials science , electrochemistry , electrode , organic chemistry , ion , deprotonation , medicine , endocrinology
Abstract Solid organic electrocatalysts have hardly been tested in Li–O 2 batteries. Here, a new solid organic electrocatalyst, dilithium quinone‐1,4‐dicarboxylate (Li 2 C 8 H 2 O 6 ) is presented, which is expected to overcome the shortcomings of inorganic catalysts. The function‐oriented synthesis is low cost and low polluting. The electrocatalytic performance is evaluated by following the degradation of Li 2 O 2 during the charge process in a Li–O 2 cell through in situ XRD and operando synchrotron radiation powder XRD (SR‐PXD) measurements. The results indicate that the electrocatalytic activity of Li 2 C 8 H 2 O 6 is similar to that of commercial Pt. The Li 2 O 2 decomposition in a cell with Li 2 C 8 H 2 O 6 catalyst follows a pseudo‐zero‐order reaction, virtually without any side reactions. These results provide an insight into the development of new organic catalysts for the oxygen evolution reaction (OER) in Li–O 2 batteries.