To meet the growing energy demands, it is urgent for us to construct grid-scale energy storage systemthan can connect sustainable energy resources. Aqueous Li-ion batteries （ALIBs） have been widely in-vestigated to ...To meet the growing energy demands, it is urgent for us to construct grid-scale energy storage systemthan can connect sustainable energy resources. Aqueous Li-ion batteries （ALIBs） have been widely in-vestigated to become the most promising stationary power sources for sustainable energy such as windand solar power. It is believed that advantages of ALIBs will overcome the limitations of the traditionalorganic lithium battery in virtue of the safety and environmentally friendly aqueous electrolyte. In thepast decades, plentiful works have been devoted to enhance the performance of different types of ALIBs.In this review, we discuss the development of cathode, anode and electrolyte for acquiring the desiredelectrochemical performance of ALIBs. Also. the main challenges and outlook in this field are briefly dis-cussed.展开更多
This work developed a facile way to mass-produce a carbon-coated TiP_2O_7 nanoporous microsphere(TPO-NMS) as anode material for aqueous lithium-ion batteries via solid-phase synthesis combined with spray drying method...This work developed a facile way to mass-produce a carbon-coated TiP_2O_7 nanoporous microsphere(TPO-NMS) as anode material for aqueous lithium-ion batteries via solid-phase synthesis combined with spray drying method. TiP_2O_7 shows great prospect as anode for aqueous rechargeable lithium-ion batteries(ALIBs) in view of its appropriate intercalation potential of-0.6 V(vs. SCE) before hydrogen evolution in aqueous electrolytes. The resulting sample presents the morphology of secondary microspheres(ca. 20 μm) aggregated by carbon-coated primary nanoparticles(100 nm), in which the primary nanoparticles with uniform carbon coating and sophisticated pore structure greatly improve its electrochemical performance. Consequently, TPONMS delivers a reversible capacity of 90 mA h/g at 0.1 A/g, and displays enhanced rate performance and good cycling stability with capacity retention of 90% after 500 cycles at 0.2 A/g. A full cell containing TPO-NMS anode and LiMn_2O_4 cathode delivers a specific energy density of 63 W h/kg calculated on the total mass of anode and cathode. It also shows good rate capacity with56% capacity maintained at 10 A/g rate(vs. 0.1 A/g), as well as long cycle life with the capacity retention of 82% after 1000 cycles at 0.5 A/g.展开更多
文摘To meet the growing energy demands, it is urgent for us to construct grid-scale energy storage systemthan can connect sustainable energy resources. Aqueous Li-ion batteries （ALIBs） have been widely in-vestigated to become the most promising stationary power sources for sustainable energy such as windand solar power. It is believed that advantages of ALIBs will overcome the limitations of the traditionalorganic lithium battery in virtue of the safety and environmentally friendly aqueous electrolyte. In thepast decades, plentiful works have been devoted to enhance the performance of different types of ALIBs.In this review, we discuss the development of cathode, anode and electrolyte for acquiring the desiredelectrochemical performance of ALIBs. Also. the main challenges and outlook in this field are briefly dis-cussed.
基金supported by the National Natural Science Foundation of China(21333002)the National Key Research and Development Plan(2016YFB0901500)
文摘This work developed a facile way to mass-produce a carbon-coated TiP_2O_7 nanoporous microsphere(TPO-NMS) as anode material for aqueous lithium-ion batteries via solid-phase synthesis combined with spray drying method. TiP_2O_7 shows great prospect as anode for aqueous rechargeable lithium-ion batteries(ALIBs) in view of its appropriate intercalation potential of-0.6 V(vs. SCE) before hydrogen evolution in aqueous electrolytes. The resulting sample presents the morphology of secondary microspheres(ca. 20 μm) aggregated by carbon-coated primary nanoparticles(100 nm), in which the primary nanoparticles with uniform carbon coating and sophisticated pore structure greatly improve its electrochemical performance. Consequently, TPONMS delivers a reversible capacity of 90 mA h/g at 0.1 A/g, and displays enhanced rate performance and good cycling stability with capacity retention of 90% after 500 cycles at 0.2 A/g. A full cell containing TPO-NMS anode and LiMn_2O_4 cathode delivers a specific energy density of 63 W h/kg calculated on the total mass of anode and cathode. It also shows good rate capacity with56% capacity maintained at 10 A/g rate(vs. 0.1 A/g), as well as long cycle life with the capacity retention of 82% after 1000 cycles at 0.5 A/g.
