Summary:

The present invention provides a transition metal compound with a heterojunction structure, which is characterized in that it is a transition metal oxide-transition metal nitride heterojunction. The present invention also provides a composite lithium supplement material, which is characterized in that, comprising: an organic lithium salt and a catalyst, wherein, the organic lithium supplement material is a carbon oxide of lithium, and the catalyst is a transition metal compound with a heterojunction structure provided by the present invention, that is, a transition metal oxide-transition metal nitride heterojunction. The composite lithium supplement material provided by the present invention can make the decomposition potential of organic lithium salt drop more, the lithium supplement capacity is higher, and the battery cycling performance is better when using the transition metal compound with heterojunction structure provided by the present invention as a catalyst, and when a single transition metal oxide or transition metal nitride is used as a catalyst.

Link: http://epub.cnipa.gov.cn/patent/CN114573028A?8kt2YOWWXQBD=1667819905378