Abstract
ABSTRACT With the increasing severity of energy and environmental issues, green economy and sustainable development have reached a consensus, and green technology innovation emerges as a new track for global competition and economic development. As a solution to mitigate energy and environmental crises, new energy vehicles have garnered significant attention from the government and the industry. Based on the joint patent application data in China’s new energy vehicle industry, this paper constructs the urban cooperative innovation network and studies its structural and evolutionary characteristics across the country and in the Yangtze River Delta region respectively. The findings are as follows: (1) During 2004–2021, the scale of both the national and the Yangtze River Delta regional innovation networks has been expanding, with closer inter-city ties and stronger local clustering. (2) The national innovation network maintains a single-centre structure with Beijing as the core; there remains a significant gap between Beijing and other cities. (3) The innovation network of the Yangtze River Delta cities shows a polycentric structure, and cities vary in their preference for inter-regional or intra-regional cooperation. The study provides policy implications for the central and local governments to further improve industrial innovation.
Published Version
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