Multi-electron redox phenazine for ready-to-charge organic batteries

作者：Lee Minah; Hong Jihyun; Lee Byungju; Ku Kyojin; Lee Sechan; Park Chan Beum^*; Kang Kisuk^*

来源：Green Chemistry, 2017, 19(13): 2980-2985.

DOI：10.1039/c7gc00849j

Organic redox compounds represent an emerging class of cathode materials in rechargeable batteries for low-cost and sustainable energy storage. However, the low operating voltage (<3 V) and necessity of using lithium-containing anodes have significantly limited their practical applicability to battery systems. Here, we introduce a new class of p-type organic redox centers based on N,N'-substituted phenazine (NSPZ) to build ready-to-charge organic batteries. In the absence of lithium-containing anodes, NSPZ cathodes facilitate reversible two-electron transfer at 3.7 and 3.1 V accompanying anion association, which results in a specific energy of 622 Wh kg(-1) in dual-ion batteries.

• 出版日期2017-7-7