杨婷^1,2,张红梅^1,2,张帆^1,2,纪志永^1,3,2,张盼盼^1,2,汪婧^1,2,郭志远^1,2,方嘉炜^1,2

• 1:河北工业大学 化工学院， 海水资源高效利用化工技术教育部工程研究中心， 天津 300130
• 2:河北工业大学 化工学院， 天津市本质安全化工技术重点实验室， 天津 300130
• 3:河北省现代海洋化工技术协同创新中心， 天津 300130

摘要(Abstract)：

针对传统LiMn₂O₄ (LMO)膜电极导电性差及提锂效率低等问题,引入一维碳纳米管(CNT)和二维氧化石墨烯(GO),制备新型CNT-GO-LiMn₂O₄膜电极(CNT-GO-LMO),CNT与GO通过π-π键相互作用,实现了与LMO活性材料“互联互通”三维致密导电网络结构的构建,使CNT-GO-LMO膜电极具有优异的导电能力和提锂性能。采用扫描电子显微镜、拉曼光谱、X射线衍射等手段对膜电极进行表征,并考察了膜电极在高Mg/Li溶液中的提锂性能,结果表明,CNT与GO的引入有效提高了CNT-GO-LMO的镁锂分离系数和电流效率;与LMO、CNT-LMO膜电极相比,CNT-GO-LMO膜电极展现出更优的提锂性能:平均提锂容量为36.04 mg·g^-1,提锂速率为1.085 mg·(g·min)^-1,电流效率为94.73%。

关键词(KeyWords)： 回收;选择性;吸附;锰酸锂;提锂

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(21978064);天津市自然科学基金(19JCYBJC20400);河北省自然科学基金(B2022202024,B2019202423)

作者(Author): 杨婷^1,2,张红梅^1,2,张帆^1,2,纪志永^1,3,2,张盼盼^1,2,汪婧^1,2,郭志远^1,2,方嘉炜^1,2

DOI: 10.3969/j.issn.1003-9015.2023.05.016

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