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A high-performance lithium anode based on N-doped composite graphene
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作者 Can Jiao Hao-Bo Sun +4 位作者 Li Zhang shang-qian zhao Guo-Yao Pang Chun-Rong zhao Shi-Gang Lu 《Rare Metals》 SCIE EI CAS CSCD 2024年第3期1030-1036,共7页
Lithium(Li)metal is the most promising electrode for next-gene ration rechargeable batteries.In order to push the commercialization of the lithium metal batteries,a kind of nitrogen(N)-doped composite graphene(NCG)ado... Lithium(Li)metal is the most promising electrode for next-gene ration rechargeable batteries.In order to push the commercialization of the lithium metal batteries,a kind of nitrogen(N)-doped composite graphene(NCG)adopted as the Li plating host was prepared to regulate Li metal nucleation and suppress dendrite growth.Furthermore,a new kind of sandwich-type composite lithium metal(STCL)electrode was developed to improve its application.The STCL electrode can be used as convenient as a piece of Li foil but no dendrite growth.In a symmetric battery,the STCL electrode cycled for more than 4500 h with the overpotential of less than 40 mV.And due to the creative design,the STCL promises the Li-S battery with a prolonged cycling lifespan. 展开更多
关键词 Lithium metal anode Lithiophilic N-doped composite graphene Sandwich-type composite lithium metal electrode
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Electrochemical properties of high-loading sulfur–carbon materials prepared by in situ generation method
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作者 Can Jiao Chun-Rong zhao +4 位作者 Li Zhang shang-qian zhao Guo-Yao Pang Hao-Bo Sun Shi-Gang Lu 《Rare Metals》 SCIE EI CAS CSCD 2023年第11期3877-3885,共9页
A high sulfur content sulfur–carbon composite was synthesized via in situ generation method in aqueous solution.When the sulfur loading is up to 90%,the electrode still exhibits good cycling performance with a revers... A high sulfur content sulfur–carbon composite was synthesized via in situ generation method in aqueous solution.When the sulfur loading is up to 90%,the electrode still exhibits good cycling performance with a reversible capacity of about 623 mAh·g^(-1)after 100 cycles.To further commercialize the Li–S battery,understanding the capacity degradation mechanism is very essential,especially with a high sulfur loading electrode.To achieve this goal,the electrochemical performance of the high sulfur loading electrode was studied,and the structure change of the electrode after cycling was also examined by ex situ scanning electron microscopy(SEM)and other techniques.The result shows that the Li_(2)S_(2)and Li_(2)S inhomogeneous precipitation contributes to the majority capacity fading of the high sulfur loading Li–S cells. 展开更多
关键词 High loading Sulfur–carbon materials Electrochemical performance Capacity fading Lithium–sulfur battery
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