No, there is no evidence that children are more susceptible. In fact, most confirmed cases of COVID-19 reported from China have occurred in adults. Infections in children have been reported, including in very young children, however the symptoms in children have been mild. There is much more to be learned about how COVID-19 impacts children.

References:

1.https://www.cdc.gov/coronavirus/2019-ncov/specific-groups/children-faq.html