Journal
ELECTROCHIMICA ACTA
Volume 278, Issue -, Pages 42-50Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2018.05.007
Keywords
Aqueous lithium ion battery; TiP2O7/C; Anode material; Carbon coating; Phenolic resin
Categories
Funding
- National Nature Science Foundation of China [21571189]
- Science and Technology Major Project of Hunan Province, China [2017GK1040]
- Science and Technology Plan Project of Hunan Province, China [2016TP1007, 2017TP1001]
- Innovation-Driven Project of Central South University [2016CXS009]
- Fundamental Research Funds for the Central Universities of Central South University
Ask authors/readers for more resources
TiP2O7 is an applicable anode for aqueous Li ion batteries (ALIBs) for its suitable potential and competitive capacity. However, inferior cycling performance and rate capability owing to the poor ionic and electronic conductivities have greatly restricted its application in ALIBs. To tackle these issues, the strategies of nanostructuring and high quality carbon coating were developed in this work. TiP2O7/C nanoparticles with a size of ca. 50 nm have a high surface area of 41.07m(2) g(-1). In this composite, TiP2O7 nanoparticle is well coated by a uniform carbon layer (thickness of ca. 10 nm and carbon content of 7.65 wt%). The as- obtained TiP2O7/C composite shows an excellent cycling performance (90.6% capacity retention after 100 cycles at 30 mA g(-1) and 97.3% capacity retention after 600 cycles at 750 mA g(-1)) and superior rate capability (97 mAh g(-1) at 30 mA g(-1) and 78 mAh g(-1) at 300mA g(-1)). It is found that the intrinsically stable structure of TiP2O7 nanoparticles and the uniform carbon coating greatly contributed to their superior electrochemical properties in aqueous electrolyte. (C) 2018 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available