The rebel delegation made the request to Mr. Sarkozy in Paris during a meeting on Wednesday. The delegation includes a representative of western Libya's rebel-controlled city of Misrata, Suleiman Fortia.
After the meeting, he said the rebels believe they can march on the Libyan capital within “days” with “a bit of help” from friends such as France.
It was not clear how the French president reacted to the rebel appeal. France previously dropped arms to rebels in Libya's western mountains last month.
France is participating in a three-month-old NATO-led campaign of airstrikes on pro-Gadhafi forces. The airstrikes support rebels who began an uprising in March to end Mr. Gadhafi's 42-year autocratic rule.
In another development, Chinese state news agency Xinhua says President Hu Jintao has called on all parties in Libya to agree on an immediate cease-fire and resolve the crisis through dialogue.
It says he made the comment in a phone conversation with South African President Jacob Zuma on Thursday.
Xinhua says Mr. Hu expressed appreciation for South Africa's bid to mediate a political solution to the conflict on behalf of the African Union and promised to coordinate with Mr. Zuma on those efforts.