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Issue 8, 2019
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High capacity graphite-like calcium boridecarbides as a novel anode active material for lithium-ion batteries

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Abstract

Graphite-like Ca0.6B1.2C4.8 is reported as a novel anode active material for lithium-ion batteries. Its original specific capacity was 552 mA h g−1, and it was increased to 648 mA h g−1, which is 1.7 times higher than that of graphite, by preliminary extraction of a portion of its calcium atoms. The average lithium deintercalation potential was 1.16 V vs. Li/Li+, which is one of the lowest-ever potential values among high capacity carbon-based materials studied so far. We also reveal its unique Li intercalation/deintercalation behavior coincident with a 7% change in the boron-doped graphene interlayer distance while keeping its ordered layer structure. This is the first development of a high capacity and low potential carbon based material which is capable of being prepared by one-pot heat treatment from graphite showing graphite-like reversible structural changes upon Li intercalation/deintercalation.

Graphical abstract: High capacity graphite-like calcium boridecarbides as a novel anode active material for lithium-ion batteries

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Article information


Submitted
28 Jan 2019
Accepted
15 Apr 2019
First published
26 Apr 2019

Sustainable Energy Fuels, 2019,3, 1929-1936
Article type
Communication

High capacity graphite-like calcium boridecarbides as a novel anode active material for lithium-ion batteries

G. Tei, R. Miyamae and A. Kano, Sustainable Energy Fuels, 2019, 3, 1929
DOI: 10.1039/C9SE00061E

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