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Aqueous Calcium-Ion Battery Based on a Mesoporous Organic Anode and a Manganite Cathode with Long Cycling Performance.
ChemSusChem ( IF 8.4 ) Pub Date : 2020-05-19 , DOI: 10.1002/cssc.202000812
Ruibai Cang 1 , Chunlin Zhao 1 , Ke Ye 1 , Jinling Yin 1 , Kai Zhu 1 , Jun Yan 1 , Guiling Wang 1 , Dianxue Cao 1
Affiliation  

Aqueous batteries have attracted increasing and extensive attention, owing to their high safety, low cost, and low toxicity. These factors have become increasingly important, given the current focus on the rapid development of green energy technologies. In particular, multivalent‐ion batteries are emerging as alternatives to lithium‐ion batteries. Unfortunately, magnesium and aluminum ions have high polarization strengths that are unfavorable for electrode materials. In contrast, calcium‐ion batteries successfully avoid the problem of high polarization. Herein, an aqueous calcium‐ion battery (CIBs) based on mesoporous silica SBA‐15 with a two‐dimensional hexagonal through‐hole structure is reported. The poly(3,4,9,10‐perylentetracarboxylic diimide) (PPTCDI) organic material supported on SBA‐15 is used as the anode and displays a capacity of 201 mAh g−1, with a stable cycling performance of 95 % capacity retention after 1500 cycles. SBA‐15@PPTCDI‖Ca2MnO4 aqueous CIBs demonstrate a high energy density of 130.6 Wh kg−1 in the cell voltage range from 0.0 to 1.8 V, with a high capacity and excellent cycling stability. As the anode material, SBA‐15@PPTCDI shows special bonding of redox electrons that leads to its highly stable performance, which paves the way for addressing the shortcomings of traditional organic electrode materials. The localization and delocalization of the redox electron offers additional voltage stability, which is another important advantage for practical applications. This study highlights the potential of organic electrode materials for applications in aqueous multivalent‐metal‐ion batteries.

中文翻译:

基于介孔有机阳极和具有长循环性能的锰酸盐阴极的水系钙离子电池。

水系电池因其安全性高、成本低、毒性低而受到越来越多的关注。鉴于当前对绿色能源技术快速发展的关注,这些因素变得越来越重要。特别是,多价离子电池正在成为锂离子电池的替代品。不幸的是,镁和铝离子具有高极化强度,这不利于电极材料。相比之下,钙离子电池成功地避免了高极化问题。在此,报道了一种基于具有二维六边形通孔结构的介孔二氧化硅SBA-15的水性钙离子电池(CIB)。以SBA-15负载的聚(3,4,9,10-苝四甲酰二亚胺)(PPTCDI)有机材料作为负极,容量为201 mAh g -1,具有稳定的循环性能,容量保持率为95% 1500次循环后。SBA-15@PPTCDI‖Ca 2 MnO 4水性CIB在电池电压0.0至1.8 V范围内表现出130.6 Wh kg -1的高能量密度,具有高容量和优异的循环稳定性。作为负极材料,SBA-15@PPTCDI表现出特殊的氧化还原电子键合,使其具有高度稳定的性能,为解决传统有机电极材料的缺点铺平了道路。氧化还原电子的局域和离域提供了额外的电压稳定性,这是实际应用的另一个重要优势。这项研究强调了有机电极材料在水性多价金属离子电池中应用的潜力。
更新日期:2020-05-19
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