多孔富锂锰基电极开发及在电化学提锂方面的应用  

Application of Porous Lithium-Rich Manganese-Based Electrodes for Lithium Extraction

作　　者：王洋 赵子健 赵晓昱 王彦飞 WANG Yang;ZHAO Zijian;ZHAO Xiaoyu;WANG Yanfei(College of Chemical Engineering and Materials Science,Tianjin University of Science&Technology,Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization,Marine Chemical Technology Engineering Centre,Tianjin 300457,China)

机构地区：[1]天津科技大学化工与材料学院,天津市卤水化工与资源生态化利用重点实验室,天津市海洋化工技术工程中心,天津300457

出　　处：《盐科学与化工》2024年第10期31-35,共5页Journal of Salt Science and Chemical Industry

基　　金：中国博士后科学基金特别资助项目(2023T160268);天津市卤水化工与资源生态化利用重点实验室开放基金(BCERE202104)。

摘　　要：锰酸锂电极在电化学提取卤水锂离子方面的应用受到广泛关注。为提升电极锂离子的传输性能及吸脱附可逆性,研究了在高负载量下,以二甲基亚砜为溶剂,碳纤维为导电添加剂,通过冷冻干燥技术制备多孔厚电极并研究性能,结果表明:在模拟卤水锂吸附测试中,高负载电极的单次循环锂吸附量达到1.84 mmol/g Li^(+),回收液锂离子纯度超过96.29%,平均能耗约为1.86 Wh/mol Li^(+),单位面积的吸附量约为0.005 5 mmol/cm^(2),比普通电极的单位面积吸附量提高83.3%。The application of lithium manganate electrodes for the electrochemical extraction of lithium ions from brines have received much attention.To enhance the Li^(+) transport performance of the electrode and the reversibility of Li^(+) adsorption and desorption,we investigated a po-rous thick electrode prepared using the freeze-drying technique with dimethyl sulfoxide as the solvent and carbon fiber as the conductive additive under high loading.The results indicated that in the simulated brine lithium adsorption test,the highly loaded electrode achieved a lithium adsorption capacity of 1.84 mmol/g Li^(+) in a single cycle,and the recovered liquid The lithium ion purity exceeded 96.29%,the average energy consumption was about 1.86 Wh/mol Li^(+).The adsorption capacity per unit area of the porous electrode was approximately 0.0055 mmol/cm^(2),representing an 83.3%increase compared to the standard electrode.

关 键 词：多孔电极 冰模板法 电化学提锂 

分 类 号：TQ131.11[化学工程—无机化工] TS396.5[轻工技术与工程]