Research Experience
1. A novel mixture of lithium bis(oxalato)borate (LiBOB), gamma-butyrolactone (GBL) and non-flammable hydrofluoroether as a safe electrolyte for advanced lithium ion batteries
(Published in Journal of Materials Chemistry A)
Advised by Prof.Li Yang of SJTU Nov. 2016 - Mar. 2017
(Published in Journal of The Electrochemical Society)
Advised by Prof. Li Yang of SJTU June 2016 - Dec. 2016
(Under Review in Journal of Power Sources)
Advised by Prof. Li Yang of SJTU Jan. 2017 - May 2017
Advised by Prof. Li Yang of SJTU Feb. 2016 - May 2016
Advised by Prof. Deli Wang of HUST Feb. 2015 - May 2015
(Published in Journal of Materials Chemistry A)
Advised by Prof.Li Yang of SJTU Nov. 2016 - Mar. 2017
- Formulated a safe electrolyte based on 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropyl ether (F-EPE), LiBOB and GBL, and measured flash points of electrolytes.
- Carried out the LSV, XPS and SEM characterization of electrolytes and batteries, whose test results suggested that LiF was introduced into SEI film on the graphite anode by adding F-EPE and improved cell’s performances.
- Conducted the charge-discharge (C-D) test to evaluate the batteries’ performances, indicating the capacity retention of battery after 500 cycles reached 80.6% at 25 oC and the battery delivered the capacity of 74.2 mAh g-1 at -40 oC.
(Published in Journal of The Electrochemical Society)
Advised by Prof. Li Yang of SJTU June 2016 - Dec. 2016
- Mixed PC with F-EPE to formulate a safe electrolyte, in which fluoroethylene carbonate was selected to improve the compatibility of the electrolyte with graphite, and compared the flash point of electrolytes.
- Carried out Cyclic Voltammetry (CV) test of electrolytes, whose results showed the synergy of F-EPE and FEC inhibited the co-intercalation of PC into graphite effectively.
- Investigated the battery performance using C-D test, manifesting this safe electrolyte well supported graphite/NMC full cell and its rate and cycle performances were comparable to those of commercial electrolytes at 25 oC.
(Under Review in Journal of Power Sources)
Advised by Prof. Li Yang of SJTU Jan. 2017 - May 2017
- Proposed a new high-voltage safe electrolyte composed of F-EPE and TMS for LNMO/graphite, and employed Contact Angle Measuring Instrument to confirm the high wettability of the electrolyte.
- Characterized the electrolytes and batteries with CV, XRD, SEM and XPS test, whose results elucidated the TMS-based electrolyte had better compatibility with graphite anode using SBR/CMC as the binder compared with PVDF.
- Conducted the C-D test, showing the capacity retention of LNMO/graphite after 100 cycles reached 82.9% which was obviously higher than that of a commercial electrolyte (65.1%).
Advised by Prof. Li Yang of SJTU Feb. 2016 - May 2016
- Synthesized a series of alkyl-, alkenyl- or ether- functionalized pyrrolidinium/imidazolium ILs based on bis-(trifluoromethanesulfonyl)imide anion.
- Conducted NMR tests and verified whether the ILs were synthesized successfully.
- Prepared the ILs into electrolytes and tested the electrolytes in NMC/Li or graphite/Li cells.
Advised by Prof. Deli Wang of HUST Feb. 2015 - May 2015
- Employed hydrothermal and one-pot annealing methods to synthesize a nitrogen and sulfur co-doped graphene (NSGCB) nanocomposite using graphene oxide, thiourea, and acidized carbon black.
- Carried out the LSV, CV and SEM tests, whose results revealed the NSGCB had excellent oxygen reduction reaction performance which was superior to that of Pt/C in terms of long-term durability and tolerance to methanol poisoning.
Teaching Experience
General Chemistry Experiment
Teaching Assistant, School of Chemistry and Chemical Engineering, SJTU Sept. 2015 - Jan. 2016
Teaching Assistant, School of Chemistry and Chemical Engineering, SJTU Sept. 2015 - Jan. 2016
- Taught students the basic theory and operation of experiments.
- .Supervised and recorded students’ experimental performances, and then graded their experimental reports
Research Skills
- Tests and Characterizations: CV, NMR (1H, 13C), DSC, TGA, XRD, XPS, SEM, TEM
- Research Operations: assembling coin battery, synthesizing inorganic and organic compounds