Li3PS4 固态电解质的研究进展

魏超超, 余创, 吴仲楷, 彭林峰, 程时杰, 谢佳

Research progress of Li3PS4 solid electrolyte

Chaochao WEI, Chuang YU, Zhongkai WU, Linfeng PENG, Shijie CHENG, Jia XIE

图2 (a) β-Li3PS4 中O驱动的从2D到3D传输行为转变以及O掺杂对Li界面稳定性的改善的示意图；(b) 75Li2S·(25-x)P2S5-xP2O5 中室温离子电导率和平均晶粒尺寸随 x 值的变化; (c) 干燥的75Li2S·25P2S5 样品和热处理的75Li2S·(25-x)P2S5-xP2O5(x=0,1,2,3,5 mol%)样品的XRD图谱; 相应(d)拉曼光谱; (e) 氧化物添加对Li3PS4(LPS)电解质的影响模型;“A”代表不添加氧化物；“B”代表空间电荷效应；“C”代表氧化物的阻塞效应

Fig. 2 (a) Schematic illustration of the O-driven transition from 2D to 3D transport behaviour in β-Li3PS4 and the improvement of the interfacial stability against Li by O doping, (b) The variation of room-temperature ionic conductivities and the average crystallite size with the value of x in 75Li2S·(25-x)P2S5-xP2O5, (c) Raman spectra and b the corresponding XRD patterns and (d) of the dried 75Li2S·25P2S5 sample and heat-treated 75Li2S·(25-x)P2S5-xP2O5 (x= 0, 1, 2, 3, 5 mol%) samples, (e) Model for the oxide filler’s effect on the parent Li3PS4(LPS)electrolyte, ‘A’ represents the addition of no oxide filler, ‘B’ represents the space-charge effect, and ‘C’ shows the blocking effect of the oxide filler