Bilateral climate talks stalled last year after Nancy Pelosi, then speaker of the US House of Representatives, enraged Beijing by visiting self-ruled Taiwan, which China considers to be part of its territory.
But Kerry, a former secretary of state, has enjoyed comparatively cordial and consistent relations with China despite Washington and Beijing locking horns over Taiwan and a number of other thorny issues.
“Every country, including China, has a responsibility to reduce emissions,” Sullivan said.
During the visit, he is expected to meet with his Chinese counterpart, Xie Zhenhua.
President Xi Jinping has also said that the country will reduce its use of coal from 2026.