CONSPECTUS:Li-rich layered oxides have received extensive attention as promising high-energy-density cathodes for next-generation Li-ion batteries.Different from traditional cathodes such as LiCoO2,LiFePO4,and Li2MnO4...CONSPECTUS:Li-rich layered oxides have received extensive attention as promising high-energy-density cathodes for next-generation Li-ion batteries.Different from traditional cathodes such as LiCoO2,LiFePO4,and Li2MnO4,Li-rich oxides generally can harvest superior discharge capacities exceeding 250 mAh g−1,which originated from the contribution of oxygen redox chemistry.However,lattice oxygen release and irreversible TM transition would induce severe structure distortion and capacity degradation as well as voltage attenuation within Li-rich cathodes during electrochemical processes,which greatly limits their industrial applications in next-generation Li-ion batteries.展开更多
CONSPECTUS:The success of lithium-ion batteries(LIBs)has driven the vigorous development of mobile electronic devices and electric vehicles.As a key component of LIBs,the energy density of traditional cathode material...CONSPECTUS:The success of lithium-ion batteries(LIBs)has driven the vigorous development of mobile electronic devices and electric vehicles.As a key component of LIBs,the energy density of traditional cathode materials has approached the theoretical limit,and the scarce transition metal elements have significantly increased the cost of batteries.In pursuit of cheap,abundant,and high-capacity materials,more attention is being focused on conversion-type cathodes.Sulfur(S),as a competitive nonmetallic element with extremely high theoretical capacity,has been widely studied in recent years.展开更多
Seawater batteries are attracting continuous attention because seawater as an electrolyte is inexhaustible,eco-friendly,and free of charge.However,the rechargeable seawater batteries developed nowadays show poor rever...Seawater batteries are attracting continuous attention because seawater as an electrolyte is inexhaustible,eco-friendly,and free of charge.However,the rechargeable seawater batteries developed nowadays show poor reversibility and short cycle life,due to the very limited electrode materials and complicated yet inappropriate working mechanism.Here,we propose a rechargeable seawater battery that works through a rocking-chair mechanism encountered in commercial lithium ion batteries,enabled by intercalation-type inorganic electrode materials of open-framework-type cathode and Na-ion conducting membrane-type anode.The rechargeable seawater battery achieves a high specific energy of 80.0 Wh/kg at 1,226.9 W/kg and a high specific power of 7,495.0 W/kg at 23.7 Wh/kg.Additionally,it exhibits excellent cycling stability,retaining 66.3%of its capacity over 1,000 cycles.This work represents a promising avenue for developing sustainable aqueous batteries withlow costs.展开更多
基金support from the Natural Science Foundation of Jiangsu Province(BK20230376)National Natural Science Foundation of China(22309085 and 52072181)Jiangsu Provincial Department of Education(23KJB150019).
文摘CONSPECTUS:Li-rich layered oxides have received extensive attention as promising high-energy-density cathodes for next-generation Li-ion batteries.Different from traditional cathodes such as LiCoO2,LiFePO4,and Li2MnO4,Li-rich oxides generally can harvest superior discharge capacities exceeding 250 mAh g−1,which originated from the contribution of oxygen redox chemistry.However,lattice oxygen release and irreversible TM transition would induce severe structure distortion and capacity degradation as well as voltage attenuation within Li-rich cathodes during electrochemical processes,which greatly limits their industrial applications in next-generation Li-ion batteries.
基金supported by and the National Natural Science Foundation of China(grant nos.22350710185,22179120,and 21975225)the National Key Research and Development Program of China(2022YFB2402200).
文摘CONSPECTUS:The success of lithium-ion batteries(LIBs)has driven the vigorous development of mobile electronic devices and electric vehicles.As a key component of LIBs,the energy density of traditional cathode materials has approached the theoretical limit,and the scarce transition metal elements have significantly increased the cost of batteries.In pursuit of cheap,abundant,and high-capacity materials,more attention is being focused on conversion-type cathodes.Sulfur(S),as a competitive nonmetallic element with extremely high theoretical capacity,has been widely studied in recent years.
基金supported by the Hainan Province Science and Technology Special Fund(No.ZDYF20-23GXJS148)the National Natural Science Foundation of China(No.52362030).
文摘Seawater batteries are attracting continuous attention because seawater as an electrolyte is inexhaustible,eco-friendly,and free of charge.However,the rechargeable seawater batteries developed nowadays show poor reversibility and short cycle life,due to the very limited electrode materials and complicated yet inappropriate working mechanism.Here,we propose a rechargeable seawater battery that works through a rocking-chair mechanism encountered in commercial lithium ion batteries,enabled by intercalation-type inorganic electrode materials of open-framework-type cathode and Na-ion conducting membrane-type anode.The rechargeable seawater battery achieves a high specific energy of 80.0 Wh/kg at 1,226.9 W/kg and a high specific power of 7,495.0 W/kg at 23.7 Wh/kg.Additionally,it exhibits excellent cycling stability,retaining 66.3%of its capacity over 1,000 cycles.This work represents a promising avenue for developing sustainable aqueous batteries withlow costs.
