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Title: Reinvigorating Reverse-Osmosis Membrane Technology to Stabilize the V 2 O 5 Lithium-Ion Battery Cathode

Journal Article · · ChemElectroChem
 [1];  [1];  [2];  [3];  [4];  [1];  [1];  [5];  [2]
  1. Georgia Southern Univ., Statesboro, GA (United States). Dept. of Chemisry
  2. Binghamton Univ., NY (United States). Dept. of Mechanical Engineering
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Energy and Transportation Science Division
  4. Georgia Southern Univ., Statesboro, GA (United States). Dept. of Biology
  5. Binghamton Univ., NY (United States). Small Scale Systems Integration and Packaging (S3IP) Center
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Abstract V 2 O 5 is deemed as one of the most promising cathode materials for next‐generation high‐capacity lithium‐ion batteries (LIBs). It possesses a theoretical capacity of 294 mAh g −1 , which is much higher than conventional cathodes. However, there are many issues to be solved before its practical use, including poor cycle life and unsatisfactory rate performance, mainly owing to its low electronic conductivity and ionic diffusivity, as well as structural instability. This work reports three types of V 2 O 5 asymmetric membranes synthesized by using an adapted reverse‐osmosis membrane technology combined with sol‐gel chemistry, aiming to stabilize the cyclability and improve the rate performance. V 2 O 5 asymmetric membrane cathodes prepared using graphene as the conductive additives have a specific capacity of approximately 160 mAh g −1 at a current density of 100 mA g −1 with no capacity degradation after 380 cycles. It is also found that the annealing temperature and the choice of conductive additives can affect the morphology of V 2 O 5 nanoparticles and the overall electrode cyclability. A lower annealing temperature (300 vs. 400 °C) and addition of graphene are beneficial to long‐term cycling performance.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER); National Science Foundation (NSF)
Grant/Contract Number:
AC05-00OR22725; AC05-76RL01830; AC05-76RLO1830
OSTI ID:
1360082
Alternate ID(s):
OSTI ID: 1400818
Journal Information:
ChemElectroChem, Vol. 4, Issue 5; ISSN 2196-0216
Publisher:
ChemPubSoc EuropeCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 8 works
Citation information provided by
Web of Science

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Related Subjects

25 ENERGY STORAGE
asymmetric membrane
lithium ion battery cathode
phase inversion
sol-gel
vanadium pentoxide