Premium
Effects of surface lithiated TiO 2 nanorods on room‐temperature properties of polymer solid electrolytes
Author(s) -
Hua Song,
Li Jialun,
Jing Maoxiang,
Chen Fei,
Ju Bowei,
Tu Feiyue,
Shen Xiangqian,
Qin Shibiao
Publication year - 2020
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.5379
Subject(s) - electrolyte , nanorod , materials science , ionic conductivity , chemical engineering , polymer , fast ion conductor , lithium (medication) , conductivity , electrochemistry , polypropylene , ionic bonding , ion , nanotechnology , chemistry , composite material , electrode , organic chemistry , engineering , medicine , endocrinology
Summary Polymer solid electrolyte with high ionic conductivity at room‐temperature is most likely to be widely used in solid‐state lithium batteries. In this work, the novel surface lithiated TiO 2 nanorods were firstly used as ionic conductor in polymer solid electrolyte. The surface lithiated TiO 2 nanorods‐filled polypropylene carbonate polymer composite solid electrolyte (CSE) has an uniform composite structure with a thickness of about 60 μm. The ionic conductivity at room‐temperature is 1.21 × 10 −4 S cm −1 and the electrochemical stability window is up to 4.6 V (vs Li + /Li). The assembled NCM622/CSE/Li solid‐state battery shows a stable cycle performance with a retention capacity of 120 mAh g −1 after 200 cycles at the current density of 0.3 C and a high coulomb efficiency of 99%. Compared with TiO 2 particles, this novel surface lithiated TiO 2 nanorods can provide more continuous ion transport channels and more Lewis acid‐base reactive sites, provide a novel way to enhance the lithium ion transport in polymer solid electrolyte.