RecordFormComp.cmp

<aura:component controller="RecordFormCompController" implements="flexipage:availableForRecordHome,force:hasRecordId,force:apphostable" access="global">
    <aura:attribute name="sObjectName" type="String" default="Account" /> 
    <aura:attribute name="iconName" type="String" default="account" /> 
    <aura:attribute name="recordId" type="Id"/> 
    <lightning:card iconName="{!'standard:'+v.iconName}" title="{! 'New '+v.sObjectName}">
        <div class="slds-p-left_large slds-p-right_medium"> 
            <lightning:recordForm 
                 objectApiName="{!v.sObjectName}" 
		 recordId="{!v.recordId}"
                 layoutType="Full" 
                 columns="2"
                 mode="edit"
                 onsubmit="{!c.handleSubmit}"                 
                  />
        </div>
    </lightning:card>
</aura:component>

RecordFormCompController.apxc

public class RecordFormCompController {
	
    @AuraEnabled
    public static string createRecords(String recordJSON, String ObjectName) {

        sObject sObj = Schema.getGlobalDescribe().get(ObjectName).newSObject() ;
        schema.SObjectType sobjType = Schema.getGlobalDescribe().get(ObjectName);
        
        Map<String, Schema.sObjectField> sObjectFields = sobjType.getDescribe().fields.getMap();
        
        Map<String, Object> objMap = (Map<String, Object>) JSON.deserializeUntyped(recordJSON);
        for(String fieldName : objMap.keySet()) {
            Object value = objMap.get(fieldName);
            Schema.DisplayType valueType = sObjectFields.get(fieldName).getDescribe().getType();
            if (value instanceof String && valueType != Schema.DisplayType.String)
            {
                String svalue = (String)value;
                if (valueType == Schema.DisplayType.Date)
                    sObj.put(fieldName, Date.valueOf(svalue));
                else if(valueType == Schema.DisplayType.DateTime) {
                    //DateTime is a special case which we need to handle carefully. It is working in my case you need to handle it.
		    try{
                    String d1 = svalue;
                    list<String> d2 = d1.split('-');
                    list<integer> timeComponent = new list<integer>();
                    timeComponent.add(Integer.valueOf(d2[0]));
                    timeComponent.add(Integer.valueOf(d2[1]));
                    timeComponent.add(Integer.valueOf(d2[2].left(2)));
                
                    String t = d2[2].substringBetween('T','.');
                
                    list<String> time1 = t.split(':');
                    timeComponent.add(Integer.valueOf(time1[0]));
                    timeComponent.add(Integer.valueOf(time1[1]));
                    timeComponent.add(Integer.valueOf(time1[2]));
                
                    Datetime dt = Datetime.newInstance(timeComponent[0],timeComponent[1],timeComponent[2],timeComponent[3],timeComponent[4],timeComponent[5]);
                    sObj.put(fieldName, dt);
		    }
		    catch(exception ex){}
                }
                else if (valueType == Schema.DisplayType.Percent || valueType == Schema.DisplayType.Currency)
                    sObj.put(fieldName, svalue == '' ? null : Decimal.valueOf(svalue));
                else if (valueType == Schema.DisplayType.Double)
                    sObj.put(fieldName, svalue == '' ? null : Double.valueOf(svalue));
                else if (valueType == Schema.DisplayType.Integer)
                    sObj.put(fieldName, Integer.valueOf(svalue));
                else if (valueType == Schema.DisplayType.Base64)
                    sObj.put(fieldName, Blob.valueOf(svalue));
                else
                    sObj.put(fieldName, svalue);
            }
            else
                sObj.put(fieldName, value);
        }
        
        upsert sObj;
        return sObj.Id;
        
    }
}

RecordFormCompController.JS

({
	handleSubmit : function(component, event, helper) {
        event.preventDefault();
		    var recordData = event.getParam("fields");
        var record = event.getParam("record");
        
        var action = component.get("c.createRecords");
        action.setParams({
            "recordJSON":JSON.stringify(recordData),
            "ObjectName": component.get("v.sObjectName")
        });
        action.setCallback(this,function(response){
            // you should be using getState on result as getStatus doesn't exist in standard API
            var status = response.getState();
            if(status === "SUCCESS"){
                var recId = response.getReturnValue();
                var navEvt = $A.get("e.force:navigateToSObject");
                navEvt.setParams({
                    "recordId": recId
                });
                navEvt.fire();
            }
        });
        
        $A.enqueueAction(action);
	}
})