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In Situ Surface Coating of Squaric Acid with Conductive Polyaniline for a High‐Capacity and Sustainable Lithium Battery Anode
Author(s) -
Ghosh Arnab,
Mitra Sagar
Publication year - 2018
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201700866
Subject(s) - polyaniline , anode , materials science , lithium (medication) , polyaniline nanofibers , coating , squaric acid , electrical conductor , chemical engineering , in situ polymerization , dissolution , polymerization , electrode , nanotechnology , chemistry , composite material , organic chemistry , polymer , medicine , engineering , endocrinology
Squaric acid (SA) has been investigated as a readily available organic anode material in rechargeable lithium batteries. To overcome both conductivity and dissolution problems related to organic compounds, SA was conformally coated with conductive polyaniline through a facile in situ chemical polymerization route. Polyaniline‐coated SA exhibits a stable high capacity of 394 mA h g −1 after 100 cycles at 100 mA g −1 in lithium batteries. At 1 A g −1 current density, polyaniline‐coated SA (PANI‐SA) shows long cycle life over 1000 cycles with 96.9 % retention of initial reversible capacity. The reversible Li + storage property of SA is revealed through ex situ NMR characterization.