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Title: Reactivity of lithium and platinum at elevated densities

Journal Article · · Physical Review B
 [1];  [2];  [1];  [2];  [3];  [4];  [1]
  1. Center for High Pressure Science and Technology Advanced Research (HPSTAR), Shanghai (People's Republic of China)
  2. The Univ. of Edinburgh, Edinburgh (United Kingdom)
  3. The Univ. of Edinburgh, Edinburgh (United Kingdom); SLAC National Accelerator Lab., Menlo Park, CA (United States)
  4. The Univ. of Edinburgh, Edinburgh (United Kingdom); Center for High Pressure Science and Technology Advanced Research (HPSTAR), Shanghai (People's Republic of China)

Through a series of x-ray diffraction experiments, combined with first-principles calculations, we show that the nobility of platinum can be overcome, reacting with lithium under compression at room temperature. Pressures as low as 2.3 GPa lead to the synthesis of Li11Pt2, exhibiting the highest lithium content of any known intermetallic compound. Above 16 GPa, Li11Pt2 expels Li and transforms to Li2Pt. As a result, this change is accompanied by a transformation in bonding characterized by the formation of one-dimensional Pt-Pt bonds with increasingly covalent character at higher densities.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-76SF00515; EP/P022561/1; EP/L504956/1; EP/M506515/1
OSTI ID:
1532403
Journal Information:
Physical Review B, Vol. 99, Issue 22; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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