Poly(vinyldibenzothiophenesulfone): Its Redox Capability at Very Negative Potential Toward an All-Organic Rechargeable Device with High-Energy Density
Poly(vinyldibenzothiophenesulfone): Its Redox Capability at Very Negative Potential Toward an All-Organic Rechargeable Device with High-Energy Density
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DOI：
10.1002/adfm.201805858
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发表时间：
2018-12-12
影响因子：
19
通讯作者：
Nishide, Hiroyuki
中科院分区：
文献类型：
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作者：
Oka, Kouki;Kato, Ryo;Nishide, Hiroyuki
二苯唑噻吩硫磺酮在有机电解质中以-1.8 V（vys ag/agcl）的非常负电位的单一步骤减少，这是有机电解质的，这是由于电子引导的磺酮基团和所产生的dianion的稳定性。还原的异质电子转移速率常数约为10（-1）cm s（-1），比大多数氧化还原活性物种要快得多。本文提出的结果表明，二苯甲酸苯磺基磺酮是用作具有高能量密度的阳极活性材料的潜在候选者。此外，vinyldibenzothiophenesulfone的根治性聚合产生了高分子量的聚（Vinyldibenzothiophenesulfone）。可充电设备仅用有机化合物制造；聚（vinyldibenzothiophenesulsulfone）作为阳极，2,2,6,6-四甲基哌啶-1-氧基（TEM PO） - 取代的聚（甲基丙烯酸酯）作为阴极，以及四乙基铵盐盐和有机溶剂作为电子。该设备在这些有机设备中产生的最大输出电压为2.6 V，阳极的活动成分显示出非常高的能量密度> 500 mWh g（-1）
Dibenzothiophenesulfone undergoes a two-electron reduction in a single step at a very negative potential of -1.8 V (versus Ag/AgCl) in organic electrolytes, due to the electron-withdrawing sulfone group and the stability of the resulting dianion. The heterogeneous electron-transfer rate constant for the reduction is approximately 10(-1) cm s(-1), which is significantly faster than most redox-active species. The results presented herein suggest that dibenzothiophenesulfone is a potential candidate for use as an anode-active material with high-energy density. In addition, radical polymerization of vinyldibenzothiophenesulfone yielded poly(vinyldibenzothiophenesulfone) with a high molecular weight. A rechargeable device is fabricated with only organic compounds; poly(vinyldibenzothiophenesulfone) as the anode, 2,2,6,6-tetramethylpiperidine-1-oxyl (TEM PO)-substituted poly(methacrylate) as the cathode, and tetraethylammonium salt and organic solvent as the electrolyte. This device yields a maximum output voltage of 2.6 V in these organic devices, and the active component of the anode displays a very high-energy density of >500 mWh g(-1)