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Title: Engineering Heteromaterials to Control Lithium Ion Transport Pathways

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep18482· OSTI ID:1352382
 [1];  [2];  [3];  [4]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States). Center for Integrated Nanotechnolgies; North Carolina State Univ., Raleigh, NC (United States). Dept. of Materials Science and Engineering
  2. Univ. of California, San Diego, CA (United States). Dept. of Electrical and Computer Engineering
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Center for Integrated Nanotechnologies
  4. Univ. of California, San Diego, CA (United States). Dept. of Electrical and Computer Engineering; Univ. of California, San Diego, CA (United States). Materials Science Program

Safe and efficient operation of lithium ion batteries requires precisely directed flow of lithium ions and electrons to control the first directional volume changes in anode and cathode materials. Understanding and controlling the lithium ion transport in battery electrodes becomes crucial to the design of high performance and durable batteries. Some recent work revealed that the chemical potential barriers encountered at the surfaces of heteromaterials play an important role in directing lithium ion transport at nanoscale. We utilize in situ transmission electron microscopy to demonstrate that we can switch lithiation pathways from radial to axial to grain-by-grain lithiation through the systematic creation of heteromaterial combinations in the Si-Ge nanowire system. Furthermore, our systematic studies show that engineered materials at nanoscale can overcome the intrinsic orientation-dependent lithiation, and open new pathways to aid in the development of compact, safe, and efficient batteries.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Energy Frontier Research Centers (EFRC) (United States). Nanostructures for Electrical Energy Storage (NEES); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC52-06NA25396; AC04-94AL85000; SC0001160
OSTI ID:
1352382
Alternate ID(s):
OSTI ID: 1257986
Report Number(s):
LA-UR-17-21825; SAND-2015-5482J
Journal Information:
Scientific Reports, Vol. 5, Issue 1; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 7 works
Citation information provided by
Web of Science

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