The practical application of lithium–sulfur batteries(LSBs)is severely hindered by the undesirable shuttling of lithium polysulfides(LiPSs)and sluggish redox kinetics of sulfur species.Herein,a series of ultrathin si...The practical application of lithium–sulfur batteries(LSBs)is severely hindered by the undesirable shuttling of lithium polysulfides(LiPSs)and sluggish redox kinetics of sulfur species.Herein,a series of ultrathin singleatomic tungsten-doped Co_(3)O_(4)(Wx-Co_(3)O_(4))nanosheets as catalytic additives in the sulfur cathode for LSBs are rationally designed and synthesized.Benefiting from the enhanced catalytic activity and optimized electronic structure by W doping,the Wx-Co_(3)O_(4) not only reduces the shuttling of LiPSs but also decreases the energy barrier of sulfur redox reactions of sulfur species,leading to accelerated electrode kinetic.As a result,LSB cathodes with the use of 5.0 wt%W0.02-Co_(3)O_(4) as the electrocatalyst show the high reversible capacities of 1217.0 and 558.6 mAh g^(-1) at 0.2 and 5.0 C,respectively,and maintain a high reversible capacity of 644.6 mAh g^(-1) at 1.0 C(1.0 C=1675 mA g^(-1))after 500 cycles.With a high sulfur loading of 5.5 mg cm^(-2) and electrolyte–electrode ratio of 8μL_(electrolyte) mg_(sulfur)^(-1),the 5.0 wt%W_(0.02)-Co_(3)O_(4)-based sulfur cathode also retains a high reversible areal capacity of 3.86 mAh cm^(-2) at 0.1 C after 50 cycles with an initial capacity retention of 84.7%.展开更多
Relying on the great success in portable and smart devices,lithium ion batteries(LIBs)have been considered as one of the leading technologies in electric vehicles(EVs)and stationary energy storage systems(ESSs).With t...Relying on the great success in portable and smart devices,lithium ion batteries(LIBs)have been considered as one of the leading technologies in electric vehicles(EVs)and stationary energy storage systems(ESSs).With the rapid development of EVs and ESSs,the technology upgrading of LIBs is highly demanded.As expected,it requires LIBs with improved power and energy densities[1].展开更多
Lithium ion batteries(LIBs)have been widely used in portable and smart devices because of their high energy densities,long cycle life and environmental friendliness.In order to meet the evergrowing demand for human-be...Lithium ion batteries(LIBs)have been widely used in portable and smart devices because of their high energy densities,long cycle life and environmental friendliness.In order to meet the evergrowing demand for human-beings utilizing electronic devices,electric vehicles and energy storage grids.展开更多
Phosphorus has recently received extensive attention as a promising anode for lithium ion batteries (LIB ) due to its high theoretical capacity of 2,596
1. Introduction As the state-of-the-art power resources, lithium ion batteries(LIBs) have dominated the market of smart and portable electronic devices over the past several decades. At present, LIBs have been conside...1. Introduction As the state-of-the-art power resources, lithium ion batteries(LIBs) have dominated the market of smart and portable electronic devices over the past several decades. At present, LIBs have been considered as one of the leading technologies for electric vehicles(EVs) and stationary energy storage systems(ESSs) [1,2]. In order to meet the high demands arising from large-scale applications of EVs and ESSs, the development of LIBs with high energy densities, long cycle life and safe operating environment becomes critically important.展开更多
基金Shandong Excellent Young Scientists Fund Program(Oversea),Grant/Award Number:2022S02002Jinan“5150”Talent Program,Grant/Award Number:2022C01001+1 种基金Pearl River Talent Recruitment Program,Grant/Award Number:2019QN01L096Guangdong Innovative and Entrepreneurial Research Team Program,Grant/Award Number:2019ZT08L075。
文摘The practical application of lithium–sulfur batteries(LSBs)is severely hindered by the undesirable shuttling of lithium polysulfides(LiPSs)and sluggish redox kinetics of sulfur species.Herein,a series of ultrathin singleatomic tungsten-doped Co_(3)O_(4)(Wx-Co_(3)O_(4))nanosheets as catalytic additives in the sulfur cathode for LSBs are rationally designed and synthesized.Benefiting from the enhanced catalytic activity and optimized electronic structure by W doping,the Wx-Co_(3)O_(4) not only reduces the shuttling of LiPSs but also decreases the energy barrier of sulfur redox reactions of sulfur species,leading to accelerated electrode kinetic.As a result,LSB cathodes with the use of 5.0 wt%W0.02-Co_(3)O_(4) as the electrocatalyst show the high reversible capacities of 1217.0 and 558.6 mAh g^(-1) at 0.2 and 5.0 C,respectively,and maintain a high reversible capacity of 644.6 mAh g^(-1) at 1.0 C(1.0 C=1675 mA g^(-1))after 500 cycles.With a high sulfur loading of 5.5 mg cm^(-2) and electrolyte–electrode ratio of 8μL_(electrolyte) mg_(sulfur)^(-1),the 5.0 wt%W_(0.02)-Co_(3)O_(4)-based sulfur cathode also retains a high reversible areal capacity of 3.86 mAh cm^(-2) at 0.1 C after 50 cycles with an initial capacity retention of 84.7%.
基金financial support from the Pearl River Talent Recruitment Program(2019QN01L096)China the Guangdong Innovative and Entrepreneurial Research Team Program(2019ZT08L075)+1 种基金China the Guangdong Science and Technology Program(2020B121201003)China and the“Young Talent Fellowship”Program through South China University of Technology。
文摘Relying on the great success in portable and smart devices,lithium ion batteries(LIBs)have been considered as one of the leading technologies in electric vehicles(EVs)and stationary energy storage systems(ESSs).With the rapid development of EVs and ESSs,the technology upgrading of LIBs is highly demanded.As expected,it requires LIBs with improved power and energy densities[1].
基金financial support from the“Young Talent Fellowship”program through South China University of Technologythe Fundamental Research Funds for the Central Universities(2018JQ06)。
文摘Lithium ion batteries(LIBs)have been widely used in portable and smart devices because of their high energy densities,long cycle life and environmental friendliness.In order to meet the evergrowing demand for human-beings utilizing electronic devices,electric vehicles and energy storage grids.
基金Acknowledgements The authors are grateful for financial support from the Gobal Challenge Program grant （University of wollongong）, Australia Auto CRC 2020, Creative Research Initiative （NRF）, and National Science Foundation （No. NSF-CMMI-1400274）. The autors also want to thank Ms. Donghua Han, and Mr. Boyang Ruan for their great help.
文摘Phosphorus has recently received extensive attention as a promising anode for lithium ion batteries (LIB ) due to its high theoretical capacity of 2,596
基金supported by the Pearl River Talent Recruitment Program (2019QN01L096)the Guangdong Innovative and Entrepreneurial Research Team Program (2019ZT08L075)+1 种基金the Guangdong Science and Technology Program (2020B121201003)the “Young Talent Fellowship” Program through South China University of Technology。
文摘1. Introduction As the state-of-the-art power resources, lithium ion batteries(LIBs) have dominated the market of smart and portable electronic devices over the past several decades. At present, LIBs have been considered as one of the leading technologies for electric vehicles(EVs) and stationary energy storage systems(ESSs) [1,2]. In order to meet the high demands arising from large-scale applications of EVs and ESSs, the development of LIBs with high energy densities, long cycle life and safe operating environment becomes critically important.
