1 School of Materials Science and Engineering and Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials, South China University of Technology, 510641 Guangzhou, China. meouyang@scut.edu.ch and Institute of Chemical Sciences and Engineering (ISIC), École polytechnique fédérale de Lausanne (EPFL) Valais/Wallis, Energypolis, 1950 Sion, Switzerland and Empa-Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland. yigang.yan@empa.ch.
2 Empa-Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland. yigang.yan@empa.ch.
3 Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99 3584 CG, Utrecht, The Netherlands.
4 CMTR/ICMPE/CNRS UMR 7182, 2-8 rue Henri Dunant, 94320, Thiais Cedex, France.
5 School of Materials Science and Engineering and Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials, South China University of Technology, 510641 Guangzhou, China. meouyang@scut.edu.ch.
6 Institute of Chemical Sciences and Engineering (ISIC), École polytechnique fédérale de Lausanne (EPFL) Valais/Wallis, Energypolis, 1950 Sion, Switzerland and Empa-Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland. yigang.yan@empa.ch.
This communication presents a novel and solvent-free method to synthesise Mg(B3H8)2 via the gas-solid reaction between B2H6 and Mg2NiH4, which overcomes the limitations of wet chemical methods requiring solvent removal.