摘要
利用水热合成FeS2,将FeS2与葡萄糖充分混合在高纯氩气的保护下烧结5 h。利用X射线衍射对烧结后的FeS2进行表征。结果表明,450℃为最佳烧结温度,在400℃烧结白铁矿没有完全消除,在500℃烧结部分FeS2分解。将烧结后的FeS2采用丝网印刷技术制成薄膜正极,制成LiSi/FeS2体系单体电池在不同条件下放电。结果表明,FeS2烧结有效消除了放电初期电压尖峰,FeS2与葡萄糖混合物在450℃烧结后制备的单体电池比400和500℃烧结有更高的放电电压和更大的放电比容量。
FeS2 were synthesized by hydrothermal process,and FeS2 fully mixed with glucose were sintered 5 h under the protection of high-purity argon. FeS2 were characterized by X-ray diffraction （XRD）. The results show that the most appropriate sintering temperature of FeS2 is 450℃; marcasite can not completely be eliminated at 400 ℃; FeS2 partially decomposes at 500℃. Thin film cathode of FeS2 was prepared by screen printing technology. The single cell （LiSi/FeS2） was discharged under different conditions. The results show that the high temperature sintering effectively eliminates the initial discharge voltage spikes. The prepared single cell by sintering the mixture of FeS2 and glucose at 450℃ has a higher discharge voltage and capacity than those sintered at 400 and 500 ℃.
出处
《电源技术》
CAS
CSCD
北大核心
2015年第6期1269-1270,1308,共3页
Chinese Journal of Power Sources
关键词
FeS2
水热合成
烧结
薄膜正极
FeS2
hydrothermal synthesis
sintering
thin film cathode
