需要金幣:1000 個(gè)金幣 | 資料包括:完整論文 | ||
轉(zhuǎn)換比率:金額 X 10=金幣數(shù)量, 例100元=1000金幣 | 論文字?jǐn)?shù):11932 | ||
折扣與優(yōu)惠:團(tuán)購最低可5折優(yōu)惠 - 了解詳情 | 論文格式:Word格式(*.doc) |
摘要:采用簡單的靜電紡絲技術(shù)制備了PVP/ Fe(NO3)3復(fù)合纖維,通過兩個(gè)不同溫度的煅燒過程獲得了多孔α-Fe2O3微米管,用熱重分析研究煅燒過程中復(fù)合纖維狀態(tài)的變化,基于α-Fe2O3有良好的充放電性能,我們對所制備的α-Fe2O3微米管進(jìn)行了電化學(xué)性能研究,發(fā)現(xiàn)首次放電容量超過1300mAhg-1,高于目前大多數(shù)文獻(xiàn)報(bào)導(dǎo)的容量,但壽命不夠理想,循環(huán)三十次以后容量只有200 mAhg-1左右,原因可能是α-Fe2O3微米管結(jié)構(gòu)比較疏松,在鋰離子嵌入和釋放的過程中管狀結(jié)構(gòu)遭到破壞,如何提高容量和循環(huán)性能需要進(jìn)一步研究與探索。 關(guān)鍵詞:靜電紡絲,α-Fe2O3 微米管,電化學(xué)
Abstract: We reported the synthesis of porous α-Fe2O3 microtube by simple electrospinning method and investigated the formation process by TGA analysis. Based on the high theory capacity of α-Fe2O3, we studied the discharge-charge and cyclic performance of α-Fe2O3 microtube, which shows good first discharge-charge capacity of 1300 mAhg-1. The fading of cyclic performance are attributed that the porous structure is destroyed easily. Further work will be investigated. Keyboard: Electrospinning, α-Fe2O3 microtube, electrochemistry |