The durable red phosphorus(RP)anode for lithium-ion batteries(LIBs)has attracted great attention owing to its high theoretical specific capacity(2596 mA·h·g^(-1))and moderate lithiation potential(~0.7 V vs.L...The durable red phosphorus(RP)anode for lithium-ion batteries(LIBs)has attracted great attention owing to its high theoretical specific capacity(2596 mA·h·g^(-1))and moderate lithiation potential(~0.7 V vs.Li^(+)/Li).However,its intrinsic poor electrical conductivity,enormous volume expansion,and soluble intermediates(lithium polyphosphides,Li_(x)PP_(s))lead to poor cycling performance.To overcome these issues,we introduce a new type of wrinkle carbon spheres as the host for loading phosphorus through a vaporization-condensation strategy.Density functional theory calculations reveal that the wrinkle carbon sphere shows strong binding energy with P4 molecule,accelerating the adsorption and polymerization of P4,thus enhancing RP conversion in the preparation process.In the lithiation/delithiation process,the wrinkle carbon has strong bonding with phosphorus and strong adsorption with Li_(x)PP_(s),resulting in excellent cycling performance.The design strategy to modify RP polymerization via reforming the interaction between wrinkle carbon spheres and phosphorus expands the application of RP for LIBs and beyond.展开更多
基金This work was supported by the Hebei Natural Science Foundation(Nos.B02020208088,H2020206514,B2021208074,and D2022208001)the S&T Program of Hebei(Nos.20544401D,20314401D,206Z4406G,21314402D,22344402D,22373709D,22284601Z,and 21344601D)+1 种基金the National Natural Science Foundation of China(No.22109038)the National Key Research and Development Program of China(Nos.2022YFA1504100 and 2019YFE0118800).
文摘The durable red phosphorus(RP)anode for lithium-ion batteries(LIBs)has attracted great attention owing to its high theoretical specific capacity(2596 mA·h·g^(-1))and moderate lithiation potential(~0.7 V vs.Li^(+)/Li).However,its intrinsic poor electrical conductivity,enormous volume expansion,and soluble intermediates(lithium polyphosphides,Li_(x)PP_(s))lead to poor cycling performance.To overcome these issues,we introduce a new type of wrinkle carbon spheres as the host for loading phosphorus through a vaporization-condensation strategy.Density functional theory calculations reveal that the wrinkle carbon sphere shows strong binding energy with P4 molecule,accelerating the adsorption and polymerization of P4,thus enhancing RP conversion in the preparation process.In the lithiation/delithiation process,the wrinkle carbon has strong bonding with phosphorus and strong adsorption with Li_(x)PP_(s),resulting in excellent cycling performance.The design strategy to modify RP polymerization via reforming the interaction between wrinkle carbon spheres and phosphorus expands the application of RP for LIBs and beyond.
