The application relates to application of a
benzoxazole compound as a probe in detection of a
lithium metal negative
electrode. The
benzoxazole compound has a
structural formula shown in the following formula (1), wherein R1-R8 are each independently selected from one or more of a
hydrogen atom, an
alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an
aryl group, a heteroalkyl group, a heterocyclic group, a heteroaryl group, an amino group, a nitro group, a cyano group, an isocyano group, a
halogen, an alkylene group, an alkenylene group, an alkynylene group, a
formyl group and an ester group. The
benzoxazole compound provided by the application can realize
visual observation and semi-quantitative detection of the
lithium metal negative
electrode, and the detection process is simple, efficient, accurate, fast in response, good in stability and wide in applicability.