Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 118, Issue 51, Pages 29568-29573Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp509385w
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Funding
- EPSRC [EP/K00509X/1, EP/K009877/1]
- Engineering and Physical Sciences Research Council [EP/K00509X/1, EP/K009877/1] Funding Source: researchfish
- EPSRC [EP/K009877/1, EP/K00509X/1] Funding Source: UKRI
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Copper(I) nitride, produced by the ammonolysis of copper(II) pivalate at 250 degrees C, shows a competitive capacity and stable cycling behavior in sodium cells with a NaPF6/ethyl carbonate/diethyl carbonate electrolyte. Ex situ X-ray diffraction studies suggest that this material acts as a conversion electrode, with Cu3N reduced to copper metal, but that these reactions occur only at the surfaces of the particles. A higher capacity is observed in lithium cells, again with stable cycling behavior. Hydrolysis results in nanocrystalline CuO, which has a higher sodium cell capacity. However, this capacity gradually decays on cycling and, after 30 cycles, is similar to that observed with Cu3N.
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