| 水系混合离子全电池LiMn2O4//NaTi2(PO4)3 |
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| 引用本文： | 唐晟阳,米常焕,王洁.水系混合离子全电池LiMn2O4//NaTi2(PO4)3[J].无机化学学报,2018,34(7):1279-1284. |
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| 作者姓名： | 唐晟阳 米常焕 王洁 |
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| 作者单位： | 南京航空航天大学材料科学与技术学院江苏省能量转换材料与技术重点实验室 |
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| 基金项目： | 中央高校基本科研业务费专项资金（No.NJ2016058）、江苏省科技计划-产学研前瞻性联合研究项目（No.BY2016003-13）和江苏高校优势学科建设工程资助。 |
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| 摘 要： | 分别以LiMn_2O_4,NaTi_2(PO_4)_3为正负极,1 mol·L~(-1) Li_2SO_4和0.5 mol·L~(-1) Na_2SO_4的混合水溶液为电解液组装成一种水系混合离子全电池。分别将正负极材料在3种不同水相电解液(1 mol·L~(-1) Li_2SO_4、0.5 mol·L~(-1)Na_2SO_4以及1 mol·L~(-1) Li_2SO_4+0.5 mol·L~(-1)Na_2SO_4混合电解液)中进行循环伏安和恒流充放电测试,结果发现,LiMn_2O_4在上述电解液中仅有Li~+的脱出/嵌入而Na~+由于半径较大而不参与该过程,NaTi_2(PO_4)_3在3种电解液中Li+、Na+均参与嵌入/脱嵌过程,且Li~+和Na~+的嵌入/脱出峰电位相差不大,分别为-0.82和-0.64 V,-0.95和-0.75 V;全电池在265 mA·g~(-1)电流密度下平均放电电压为1.55 V,充放电比容量分别为100.1和74.9 m Ah·g~(-1)。
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| 关 键 词： | 水系全电池 混合离子电解液 高电压 电化学性能 循环伏安 |
| 收稿时间： | 2018/1/17 0:00:00 |
| 修稿时间： | 2018/4/29 0:00:00 |
A Hybrid Aqueous Full Battery Based on LiMn2O4 Cathode and NaTi2(PO4)3 Anode |
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| TANG Sheng-Yang,MI Chang-Huan and WANG Jie.A Hybrid Aqueous Full Battery Based on LiMn2O4 Cathode and NaTi2(PO4)3 Anode[J].Chinese Journal of Inorganic Chemistry,2018,34(7):1279-1284. |
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| Authors: | TANG Sheng-Yang MI Chang-Huan and WANG Jie |
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| Institution: | Jiangsu Key Laboratory of Materials and Technology for Energy Conversion, College of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China,Jiangsu Key Laboratory of Materials and Technology for Energy Conversion, College of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China and Jiangsu Key Laboratory of Materials and Technology for Energy Conversion, College of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
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| Abstract: | A new aqueous full battery based on LiMn2O4 cathode and NaTi2(PO4)3 anode with the hybrid ion electrolytes (1 mol·L-1 Li2SO4+0.5 mol·L-1 Na2SO4) was presented. The electrochemical performances of LiMn2O4 and NaTi2(PO4)3 in the different aqueous electrolytes (1 mol·L-1 Li2SO4, 0.5 mol·L-1 Na2SO4 and 1 mol·L-1 Li2SO4+0.5 mol·L-1 Na2SO4) were characterized by the cyclic voltammetry (1 mV·s-1) and the galvanostatic charge/discharge (265 mA·g-1). The results show that Li+ ion could de-intercalation/intercalation from/into LiMn2O4 but Na+ could not because of its larger radius, and both ions (Li+ and Na+) could intercalation/de-intercalation into/from NaTi2(PO4)3. The charge and discharge specific capacity was 100.1 and 74.9 mAh·g-1, respectively, with a higher discharge voltage (1.55 V) for this aqueous full battery. |
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| Keywords: | aqueous full battery hybrid ion electrolytes high voltage electrochemical performance cyclic voltammetry |
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