Weak water stability and lithium reactivity are two major stability issues of sulfide solid-state electrolytes(SSEs)for all-solid-state lithium metal batteries.Here,we report on nano-sized boron nitride(BN)-coated Li_...Weak water stability and lithium reactivity are two major stability issues of sulfide solid-state electrolytes(SSEs)for all-solid-state lithium metal batteries.Here,we report on nano-sized boron nitride(BN)-coated Li_(5.7)PS_(4.7)Cl_(1.3)(BN@LPSC1.3)sulfide SSE,which exhibits reduced H_(2)S emission and improved ionic conductivity retention after relative humidity 1.2%-1.5%ambient condition exposure.Furthermore,BN can partially react with lithium metal to create stable Li_(3)N,resulting in BN@LPSC1.3 showing reduced reactivity against lithium metal and a higher critical current density of 2.2mA/cm^(2).The Li/BN@LPSC/Li symmetrical battery also shows considerably greater stability for>2000 h at a current density of 0.1mA/cm^(2).Despite the high cathode mass loading of 13.38mg/cm^(2),the LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)/BN@LPSC1.3/Li all-solidstate lithium metal battery achieves 84.34%capacity retention even after 500 cycles at 0.1 C and room temperature(25℃).展开更多
基金financial support from the Science and Technology Project of Shenzhen(Nos.JCYJ20210324094206019 and JCYJ20210324094000001).
文摘Weak water stability and lithium reactivity are two major stability issues of sulfide solid-state electrolytes(SSEs)for all-solid-state lithium metal batteries.Here,we report on nano-sized boron nitride(BN)-coated Li_(5.7)PS_(4.7)Cl_(1.3)(BN@LPSC1.3)sulfide SSE,which exhibits reduced H_(2)S emission and improved ionic conductivity retention after relative humidity 1.2%-1.5%ambient condition exposure.Furthermore,BN can partially react with lithium metal to create stable Li_(3)N,resulting in BN@LPSC1.3 showing reduced reactivity against lithium metal and a higher critical current density of 2.2mA/cm^(2).The Li/BN@LPSC/Li symmetrical battery also shows considerably greater stability for>2000 h at a current density of 0.1mA/cm^(2).Despite the high cathode mass loading of 13.38mg/cm^(2),the LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)/BN@LPSC1.3/Li all-solidstate lithium metal battery achieves 84.34%capacity retention even after 500 cycles at 0.1 C and room temperature(25℃).
