高等学校化学学报
高等學校化學學報
고등학교화학학보
CHEMICAL JOURNAL OF CHINESE UNIVERSITIES
2014年
8期
1715-1719
,共5页
金属有机骨架%多孔碳%正极材料%锂硫电池
金屬有機骨架%多孔碳%正極材料%鋰硫電池
금속유궤골가%다공탄%정겁재료%리류전지
Metal-organic framework%Porous carbon%Cathode material%Lithium sulphur battery
采用水热法制备了一种含铝金属有机骨架材料,其在高温下发生炭化得到多孔碳,最后与硫复合制得锂硫电池正极材料. XRD图谱显示在高温炭化时多孔碳样品出现了部分石墨化. N2等温吸附-脱附测试分析显示合成的多孔碳材料含有微孔和介孔结构.对不同载硫量的锂硫电池进行了充放电性能测试,结果显示S质量分数为46.3%的样品在0.01 C倍率下首次放电容量达到1272 mA·h/g；在0.1 C倍率下首次放电容量为934 mA·h/g,循环性能良好.
採用水熱法製備瞭一種含鋁金屬有機骨架材料,其在高溫下髮生炭化得到多孔碳,最後與硫複閤製得鋰硫電池正極材料. XRD圖譜顯示在高溫炭化時多孔碳樣品齣現瞭部分石墨化. N2等溫吸附-脫附測試分析顯示閤成的多孔碳材料含有微孔和介孔結構.對不同載硫量的鋰硫電池進行瞭充放電性能測試,結果顯示S質量分數為46.3%的樣品在0.01 C倍率下首次放電容量達到1272 mA·h/g；在0.1 C倍率下首次放電容量為934 mA·h/g,循環性能良好.
채용수열법제비료일충함려금속유궤골가재료,기재고온하발생탄화득도다공탄,최후여류복합제득리류전지정겁재료. XRD도보현시재고온탄화시다공탄양품출현료부분석묵화. N2등온흡부-탈부측시분석현시합성적다공탄재료함유미공화개공결구.대불동재류량적리류전지진행료충방전성능측시,결과현시S질량분수위46.3%적양품재0.01 C배솔하수차방전용량체도1272 mA·h/g；재0.1 C배솔하수차방전용량위934 mA·h/g,순배성능량호.
An aluminum metal-organic framework ( MOF ) was prepared by hydrothermal method. Porous carbon was produced by direct carbonization of MOFs and then was loaded with sulfur. XRD patterns show that the porous carbon is partially graphitized during the high temperature carbonization. N2 sorption isotherms illustrate that the porous carbon contain both microporous and mesoporous structures. Charge-discharge tests were carried out among hierarchically sulfur loading lithium sulfur batteries. The initial discharge capacity of S/C-46. 3 sample is 1272 mA·h/g at 0.01 C and 934 mA·h/g at 0.1 C with good cycle performance.
