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Title: Operando Investigation on the Role of Densification and Chemo-Mechanics on Solid-State Cathodes

Journal Article · · Advanced Energy Materials
 [1];  [2];  [1];  [3];  [2];  [1];  [1];  [4];  [4];  [3];  [2]; ORCiD logo [1]
  1. Princeton Univ., NJ (United States)
  2. Purdue Univ., West Lafayette, IN (United States)
  3. Univ. of Michigan, Ann Arbor, MI (United States)
  4. Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)

All solid-state batteries are desirable for a range of energy storage applications which require high energy density. Achieving a high energy density in a solid-state battery requires the operation of an energy dense anode with a composite solid-state cathode. Pores and/or voids within a solid state cathode are ion-blocking and thus control over the concentration and distribution of pores in the initial electrode and cycled electrode is desirable. This study provides an understanding of the interplay between electrode microstructure and mechanics on active material utilization in solid state cathodes composed of NCM 811 and Li6PS5Cl. Decreasing the solid electrolyte particle size leads to greater active material-electrolyte contact and less total deformation when exposed to an external load. Composite cathodes with greater compliance can potentially decrease strain between the active material and solid electrolyte, decrease delamination events and result in higher overall active material utilization and high capacity retention.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS); Energy Frontier Research Centers (EFRC) (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-06CH11357; SC0023438
OSTI ID:
2565698
Alternate ID(s):
OSTI ID: 2352526; OSTI ID: 2568131
Journal Information:
Advanced Energy Materials, Journal Name: Advanced Energy Materials Journal Issue: 23 Vol. 14; ISSN 1614-6832
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

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