TY - JOUR
T1 - Phenazine anodes for ultralongcycle-life aqueous rechargeable batteries
AU - Li, Leilei
AU - Chen, Long
AU - Wen, Yuehua
AU - Xiong, Tengfei
AU - Xu, Hong
AU - Zhang, Wenfeng
AU - Cao, Gaoping
AU - Yang, Yusheng
AU - Mai, Liqiang
AU - Zhang, Hao
PY - 2020/12/28
Y1 - 2020/12/28
N2 - A nano-phenazine@Ketjen black (nPZ/KB) composite was prepared as an anode for aqueous rechargeable batteries by an in situ dissolution-precipitation method. Due to the uniform precipitation of nano-phenazine on the highly conductive and hierarchical porous Ketjen black surface, it enabled ultrafast transfer of metal cations (Na+, K+, Zn2+ etc.) and electrons to almost all the electrochemically active sites of phenazine molecules. Hence, nPZ/KB not only realized the full utilization of a theoretical capacity of 298 mA h g-1 but also exhibited a high rate discharge capacity of 102 mA h g-1 under 100 C in 6 M KOH. Furthermore, the nPZ/KB composite achieved an ultralong cycle life of 100 000 times with a high capacity retention of 76% because of the insolubilities of both phenazine and its reduction products in aqueous electrolytes. The excellent performance of the nPZ/KB-NiOOH battery and nPZ/KB-activated carbon pseudocapacitor demonstrated great promise for grid-scale energy storage devices.
AB - A nano-phenazine@Ketjen black (nPZ/KB) composite was prepared as an anode for aqueous rechargeable batteries by an in situ dissolution-precipitation method. Due to the uniform precipitation of nano-phenazine on the highly conductive and hierarchical porous Ketjen black surface, it enabled ultrafast transfer of metal cations (Na+, K+, Zn2+ etc.) and electrons to almost all the electrochemically active sites of phenazine molecules. Hence, nPZ/KB not only realized the full utilization of a theoretical capacity of 298 mA h g-1 but also exhibited a high rate discharge capacity of 102 mA h g-1 under 100 C in 6 M KOH. Furthermore, the nPZ/KB composite achieved an ultralong cycle life of 100 000 times with a high capacity retention of 76% because of the insolubilities of both phenazine and its reduction products in aqueous electrolytes. The excellent performance of the nPZ/KB-NiOOH battery and nPZ/KB-activated carbon pseudocapacitor demonstrated great promise for grid-scale energy storage devices.
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U2 - 10.1039/d0ta08600b
DO - 10.1039/d0ta08600b
M3 - RGC 21 - Publication in refereed journal
SN - 2050-7488
VL - 8
SP - 26013
EP - 26022
JO - Journal of Materials Chemistry A
JF - Journal of Materials Chemistry A
IS - 48
ER -