That would basically double the goal first put forth by President Barack Obama as part of the 2015 Paris climate agreement.
The US and China have agreed to cooperate on climate change after two days of high-profile meetings in Shanghai, despite rising tensions between the two countries.
China is the world's biggest carbon emitter, followed by the United States.
Meeting with reporters in Seoul on Sunday, Kerry said the language in the statement is "strong" and that the two countries agreed on "critical elements on where we have to go". "Obviously, we would love to see China join in that".
Biden will hold a virtual summit for dozens of world leaders this week to discuss climate change, to be livestreamed for public viewing.
It said Xi reaffirmed China's goal of bringing its carbon dioxide emissions to a peak by 2030 and achieving carbon neutrality by 2060. The US and other countries are expected to announce more ambitious national targets for cutting carbon emissions ahead of or at the meeting, along with pledging financial help for climate efforts by less wealthy nations.
Li Shuo, senior climate adviser for the environmental group Greenpeace, said China could soon respond to a new USA pledge with one of its own, building on the "momentum" of the Shanghai talks.
Biden, who has said that fighting global warming is among his highest priorities, had the United States rejoin the historic 2015 Paris climate accord in the first hours of his presidency, undoing the USA withdrawal ordered by predecessor Donald Trump.
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Neighbouring Bangladesh and Pakistan, however, are included on the list despite their outbreaks being only a third of the size. When and where was it discovered? The B.1.617 variant has been detected in 11 countries, according to the tracker.
The US and China will also develop long-term strategies to become carbon neutral, in time for the United Nations climate summit in Glasgow, UK in November.
According to the U.S.
Longer-term actions that need to be taken to keep the temperature goals of the Paris accord "within reach" include reducing emissions from industry and power generation while stepping up renewable energy, clean transportation and climate-resistant agriculture.
The two countries also plan to boost investment in green energy in developing nations, along with phasing out the use of hydrofluorocarbons, which are used in air conditioners and refrigerators.
Xi announced past year that China would be carbon-neutral by 2060 and aims to reach a peak in its emissions by 2030.
The US has rejoined the worldwide accord under Biden's administration, that has also pledged to reduce emissions.
China-EU relations face new opportunities and various challenges, Xinhua cited Xi as saying, adding that Beijing would create a fair and non-discriminatory environment for foreign companies including French and German firms, and hopes Europe can treat Chinese companies in the same positive way.