高负载量氧化锰电化学沉积及其储能性能研究  

Investigation into Electrochemical Deposition and Energy Storage Performance of High-loading Manganese Oxide

作　　者：孙震 陈梦凡 王海旭 罗维巍 刁全平 SUN Zhen;CHEN Mengfan;WANG Haixu;LUO Weiwei;DIAO Quanping(School of Chemistry and Life Science,Anshan Normal University,Anshan Liaoning 114007,China;Liaoning Key Laboratory of Development and Utilization for Natural Products Active Molecules,Anshan Liaoning 114007,China)

机构地区：[1]鞍山师范学院化学与生命科学学院,辽宁鞍山114007 [2]辽宁省天然产物活性分子开发及利用重点实验室,辽宁鞍山114007

出　　处：《鞍山师范学院学报》2025年第2期25-31,共7页Journal of Anshan Normal University

基　　金：辽宁省教育厅项目(JYTMS20231703);鞍山师范学院科研项目(22b11,22b12,23kyxm027,23kyxm031).

摘　　要：以部分剥离石墨箔EG为基底,制备了不同负载量的Na _(0.5) MnO _(2)/EG电极材料,并研究了活性材料负载量对Na _(0.5) MnO _(2)/EG电化学性能的影响.研究结果表明:当Na _(0.5) MnO _(2)活性物质负载量为7 mg·cm^(-2)时,所制备出的Na _(0.5) MnO _(2)/EG-7电极展现出优异的电容性能;在电流密度为5 mA·cm^(-2)时,Na _(0.5) MnO _(2)/EG-7电极的面积比电容可达1.64 F·cm^(-2),对应的质量比电容为234 F·g^(-1),即使电流密度增加至100 mA·cm^(-2),该电极的面积比电容仍可达到0.98 F·cm^(-2);经5000次充放电循环后,Na _(0.5) MnO _(2)/EG-7电极的电容维持率高达90%,表现出卓越的循环稳定性.Na _(0.5) MnO _(2) was grown on partially exfoliated graphite foil(EG),and the effect of active materials loading on the electrochemical performance of Na _(0.5) MnO _(2) was systematically investigated.The results indicate that when the active material loading of Na _(0.5) MnO _(2) reaches 7 mg·cm^(-2),the prepared Na _(0.5) MnO _(2)/EG-7 electrode exhibits excellent capacitance performance.The area specific capacitance of this electrode can be up to1.64 F·cm^(-2) at 5 mA·cm^(-2),which is corresponding to a mass specific capacitance of 234 F·g^(-1).Even as the current density increased to 100 mA·cm^(-2),the area specific capacitance can still reach 0.98 F·cm^(-2).After 5000 galvanostatic charge-discharge,the capacitance maintenance rate of the Na _(0.5) MnO _(2)/EG-7 electrode is 90%,showing good cycle stability.

关 键 词：超级电容器 电化学沉积 氧化锰 电化学性能 

分 类 号：O646.5[理学—物理化学]