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Computationally Driven Discovery of a Family of Layered LiNiB Polymorphs

Journal Article · · Angewandte Chemie (International Edition)
 [1];  [1];  [2];  [3];  [4];  [5];  [5];  [6];  [7];  [5];  [3];  [8];  [2];  [1]
  1. Department of Chemistry Iowa State University Ames IA 50011 USA
  2. EMAT Department of Physics University of Antwerp Antwerp 2020 Belgium
  3. Ames Laboratory, US DOE Iowa State University Ames IA 50011 USA
  4. Department of Physics University of Science and Technology of China Hefei 230026 China
  5. Department of Chemistry Iowa State University Ames IA 50011 USA, Ames Laboratory, US DOE Iowa State University Ames IA 50011 USA
  6. Ames Laboratory, US DOE Iowa State University Ames IA 50011 USA, CCNH Universidade Federal do ABC (UFABC) Santo André SP 09210-580 Brazil
  7. Ames Laboratory, US DOE Iowa State University Ames IA 50011 USA, Department of Physics and Astronomy Iowa State University Ames IA 50011 USA
  8. Ames Laboratory, US DOE Iowa State University Ames IA 50011 USA, Department of Physics University of Science and Technology of China Hefei 230026 China, Department of Physics and Astronomy Iowa State University Ames IA 50011 USA
Abstract

Two novel lithium nickel boride polymorphs, RT ‐LiNiB and HT ‐LiNiB, with layered crystal structures are reported. This family of compounds was theoretically predicted by using the adaptive genetic algorithm (AGA) and subsequently synthesized by a hydride route with LiH as the lithium source. Unique among the known ternary transition‐metal borides, the LiNiB structures feature Li layers alternating with nearly planar [NiB] layers composed of Ni hexagonal rings with a B–B pair at the center. A comprehensive study using a combination of single crystal/synchrotron powder X‐ray diffraction, solid‐state 7 Li and 11 B NMR spectroscopy, scanning transmission electron microscopy, quantum‐chemical calculations, and magnetism has shed light on the intrinsic features of these polymorphic compounds. The unique layered structures of LiNiB compounds make them ultimate precursors for exfoliation studies, thus paving a way toward two‐dimensional transition‐metal borides, MBenes.

Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-06CH11357; AC02-07CH11358
OSTI ID:
1566904
Alternate ID(s):
OSTI ID: 22861005
Journal Information:
Angewandte Chemie (International Edition), Journal Name: Angewandte Chemie (International Edition) Journal Issue: 44 Vol. 58; ISSN 1433-7851
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English

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