MODIFICATION OF GRAPHITE ELECTRODE MATERIALS FOR VANADIUM REDOX FLOW BATTERY APPLICATION .1. THERMAL-TREATMENT
MODIFICATION OF GRAPHITE ELECTRODE MATERIALS FOR VANADIUM REDOX FLOW BATTERY APPLICATION .1. THERMAL-TREATMENT
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DOI：
10.1016/0013-4686(92)85064-r
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发表时间：
1992-06-01
影响因子：
6.6
通讯作者：
SYKLLASKAZACOS, M
中科院分区：
文献类型：
--
作者：
SUN, B;SYKLLASKAZACOS, M
为了提高石墨毡在钒氧化还原电池中的电化学性能，研究了石墨毡在一定温度和处理时间下的热活化性能。在400℃高温下处理的石墨毡表现出最大的钒电池性能改善。经过这种处理，获得了超过88%的能源效率，而未经处理的毛毡只有78%的能源效率。XPS分析结果表明，与未处理样品相比，C-O和C = O的表面官能团显著增加，表明这些官能团是钒氧化还原反应的活性位点。
The thermal activation of graphite felt was investigated at a range of temperatures and treatment times so as to enhance the electrochemical performance of this material for use in the vanadium redox cell. Graphite felt treated thermally at 400-degrees-C exhibited the greatest improvement in performance of the vanadium cell. Energy efficiencies of over 88% were obtained after this treatment compared with only 78% for the untreated felt. Results from XPS analysis showed that surface functional groups of C-O and C = O increased dramatically compared with untreated samples, suggesting that these functional groups behave as active sites for the vanadium redox reactions.