Copper Thiophosphate (Cu3PS4) as an Electrode Material for Lithium Solid-State Batteries with Lithium Thiophosphate (β–Li3PS4) Electrolyte

Zhang，Zhenggang1,2; Mazzio，Katherine A.1,3; Riegger，Luise M.4; Brehm，Wolfgang5; Janek，Jürgen4,6; Sann，Joachim4,6; Adelhelm，Philipp1,3

2023

10.1002/ente.202300553

Energy Technology   Impact Factor & Quartile

2194-4288

2194-4296

Lithium thiophosphate (β-LiPS) is a promising solid electrolyte (SE) for solid-state batteries (SSBs). A major limitation is its very narrow electrochemical stability window which is caused by redox reactions involving sulfur and phosphorous. As these redox processes can be reversible, thiophosphates can be also studied as electrode materials. Herein, the use of CuPS as an active electrode material for Li SSBs with β-LiPS as the SE is explored. Both compounds exhibit similarities in crystal structure and composition which may benefit their compatibility. An In/InLi alloy is used as the counter electrode. The influence of electrode composition and temperature (room temperature and 60 °C) on the cell behavior is investigated. For an electrode composition of CuPS: β–LiPS: C65 = 40: 50: 10 wt%, the initial discharge capacity at 60 °C is 776 mAh g which fades over 60 cycles to 508 mAh g when cycled between 0.8 and 2.8 V (vs. Li/Li) at 50 mA g (254.8 μA cm). Analysis by X-ray diffraction and X-ray photoelectron spectroscopy shows that CuPS irreversibly decomposes during lithiation. During cycling, the redox activity is found to be due to CuS and S redox.

conversion reaction Cu3PS4 solid-state batteries ternary compounds transition-metal thiophosphate

SCI

English

Others

Energy & Fuels

Energy & Fuels

WOS:001058743800001

WILEY-V C H VERLAG GMBH

2-s2.0-85169156210

Scopus

1.Institut für Chemie,Humboldt Universität zu Berlin,Berlin,12489,Germany
2.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
3.Helmholtz-Zentrum Berlin für Materialien und Energie,Research Group Operando Battery Analysis (CE-GOBA),Berlin,14109,Germany
4.Institute of Physical Chemistry,Justus-Liebig-University Giessen,Gießen,35392,Germany
5.Institut für Energie-und Automatisierungstechnik,Technische Universität Berlin,Berlin,10587,Germany
6.Center for Materials Research (LaMa),Justus-Liebig-University Gießen,Gießen,35392,Germany

Zhang，Zhenggang,Mazzio，Katherine A.,Riegger，Luise M.,等. Copper Thiophosphate (Cu3PS4) as an Electrode Material for Lithium Solid-State Batteries with Lithium Thiophosphate (β–Li3PS4) Electrolyte[J]. Energy Technology,2023.

Zhang，Zhenggang.,Mazzio，Katherine A..,Riegger，Luise M..,Brehm，Wolfgang.,Janek，Jürgen.,...&Adelhelm，Philipp.(2023).Copper Thiophosphate (Cu3PS4) as an Electrode Material for Lithium Solid-State Batteries with Lithium Thiophosphate (β–Li3PS4) Electrolyte.Energy Technology.

Zhang，Zhenggang,et al."Copper Thiophosphate (Cu3PS4) as an Electrode Material for Lithium Solid-State Batteries with Lithium Thiophosphate (β–Li3PS4) Electrolyte".Energy Technology (2023).