SnP entangled by carbon nanotube networks as anode for pseudocapacitive half/full battery
作者机构：School of Materials Science and EngineeringShaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic MaterialsShaanxi University of Science and TechnologyXi'an710021China Department of Electronic EngineeringSchool of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghai200240China
出 版 物：《Journal of Materiomics》 (无机材料学学报（英文）)
年 卷 期：2023年第9卷第2期
页 面：362-369页
核心收录：
学科分类：0808[工学-电气工程] 07[理学] 08[工学] 070205[理学-凝聚态物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学]
基 金：supporting by National Natural Science Foundation of China(No.52002233) Natural Science Foundation of Shaanxi Province(No.2020JM-505) the Natural Science Fund of Shaanxi University of Science and Technology(No.2018BJ-59) the Youth Innovation Team of Shaanxi Universities(21JP021).
主 题：SnP Lithium-ion storage Carbon nanotubes Sn4P3 Pseudocapacitive
摘 要：Due to the lower operating voltage and higher theoretical specific capacity,tin phosphide is considered a class of materials with prospects as an anode material for lithium-ion batteries(LIBs).Among them,tin monophosphide has attracted people s attention due to its unique layered structure.Unfortunately,because of the challenging synthesis method and metastable nature,the application of SnP is limited.In this work,tin phosphide/carbon nanotubes(SnP/CNTs)are prepared by controlling the nucleation and adjusting the ratio of phosphorus/carbon using carbon nanotube as initiator.Sn-MOF is used as a template to make the morphology of SnP more evenly,and carbon nanotubes can also be used as a conductive network to increase the speed of electron transmission.As an anode material for LIBs,SnP/CNTs reveals superior rate performances(reversible capability of 610 mA·h·g^(-1)at 2000 mA·g^(-1)).The full-cell was assembled and tested,after 50 cycles at 0.1 C,the capacity can maintain 292 mA·h·g^(-1),and its capacity retention rate can reach 80.5%.After 230 cycles,its capacity can maintain at around 223 mA·h·g1.In addition,SnP/CNTs materials exhibit 89%pseudocapacitance contribution upon cycling,which indicates the robust Lit storage and satisfactory fast-charging capability.Hence,SnP/CNTs suggests a promising anode material for energy storage system.
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