期刊
ACS APPLIED MATERIALS & INTERFACES
卷 7, 期 1, 页码 80-84出版社
AMER CHEMICAL SOC
DOI: 10.1021/am508001h
关键词
aluminum battery; binder-free; V2O5 cathode; ionic liquid electrolyte; PTFE binder; PVDF binder
资金
- National 973 project of China [2015CB251100]
- Program for New Century Excellent Talents in University [NCET-13-0033]
- U.S. Department of Energy [DE-AC0206CH11357]
- Vehicle Technologies Office, Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy (EERE)
This letter reports on the investigation of a binder-free cathode material to be used in rechargeable aluminum batteries. This cathode is synthesized by directly depositing V2O5 on a Ni foam current collector. Rechargeable aluminum coin cells fabricated using the as-synthesized binder-free cathode delivered an initial discharge capacity of 239 mAh/g, which is much higher than that of batteries fabricated using a cathode composed of V2O5 nanowires and binder. An obvious discharge voltage plateau appeared at 0.6 V in the discharge curves of the Ni-V2O5 cathode, which is slightly higher than that of the V2O5 nanowire cathodes with common binders. This improvement is attributed to reduced electrochemical polarization.
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