Ammonium-ion batteries are promising solutions for large-scale energy storage systems owing to their costeffectiveness,safety,and sustainability.Herein,we propose an aqueous ammonium-ion battery based on an organic po...Ammonium-ion batteries are promising solutions for large-scale energy storage systems owing to their costeffectiveness,safety,and sustainability.Herein,we propose an aqueous ammonium-ion battery based on an organic poly(1,5-naphthalenediamine)anode and an inorganic Prussian blue cathode in 19 M(M:mol kg^(-1))CH3COONH_(4)electrolyte.Its operation involves a reversible coordination reaction(C=N/C-N-conversion)in the anode and the NH_(4)^(+)insertion/extraction reaction in the cathode,along with NH_(4)^(+)acting as the charge carrier in a rocking-chair battery.Benefiting from the fast kinetics and stability of both electrodes,this aqueous ammoniumion battery shows an excellent rate capability and long cycle stability for 500 cycles.Moreover,an energy density as high as 31.8 Wh kg^(-1) can be achieved,based on the total mass of the cathode and anode.Surprisingly,this aqueous ammonium-ion battery works well over a wide temperature range from-40 to 80℃.This work will provide new opportunities to build wide-temperature aqueous batteries and broaden the horizons for large-scale energy storage systems.展开更多
基金The authors acknowledge funding support from the National Key Research and Development Program of China(2018YFE0201702)the National Natural Science Foundation of China(21975052,21935003,21805126)Chenguang Program supported by Shanghai Education Development Foundation and Shanghai Municipal Education Commission(19CG01).
文摘Ammonium-ion batteries are promising solutions for large-scale energy storage systems owing to their costeffectiveness,safety,and sustainability.Herein,we propose an aqueous ammonium-ion battery based on an organic poly(1,5-naphthalenediamine)anode and an inorganic Prussian blue cathode in 19 M(M:mol kg^(-1))CH3COONH_(4)electrolyte.Its operation involves a reversible coordination reaction(C=N/C-N-conversion)in the anode and the NH_(4)^(+)insertion/extraction reaction in the cathode,along with NH_(4)^(+)acting as the charge carrier in a rocking-chair battery.Benefiting from the fast kinetics and stability of both electrodes,this aqueous ammoniumion battery shows an excellent rate capability and long cycle stability for 500 cycles.Moreover,an energy density as high as 31.8 Wh kg^(-1) can be achieved,based on the total mass of the cathode and anode.Surprisingly,this aqueous ammonium-ion battery works well over a wide temperature range from-40 to 80℃.This work will provide new opportunities to build wide-temperature aqueous batteries and broaden the horizons for large-scale energy storage systems.
