The green hydrogen industry, highly efficient and safe, is endowed with flexible production and low carbon emissions. It is conducive to building a low-carbon, efficient and clean energy structure, optimizing the energy industry system and promoting the strategic transformation of energy development and enhancing energy security. In order to achieve carbon emission peaking by 2030 and neutrality by 2060 (dual carbon goals), China is vigorously promoting the green hydrogen industry. Based on an analysis of the green hydrogen industry policies of the U.S., the EU and Japan, this paper explores supporting policies issued by Chinese central and local authorities and examines the inherent advantages of China’s green hydrogen industry. After investigating and analyzing the basis for the development of the green hydrogen industry in China, we conclude that China has enormous potential, including abundant renewable energy resources as well as commercialization experience with renewable energy, robust infrastructure and technological innovation capacity, demand for large-scale applications of green hydrogen in traditional industries, etc. Despite this, China’s green hydrogen industry is still in its early stage and has encountered bottlenecks in its development, including a lack of clarity on the strategic role and position of the green hydrogen industry, low competitiveness of green hydrogen production, heavy reliance on imports of PEMs, perfluorosulfonic acid resins (PFSR) and other core components, the development dilemma of the industry chain, lack of installed capacity for green hydrogen production and complicated administrative permission, etc. This article therefore proposes that an appropriate development road-map and integrated administration supervision systems, including safety supervision, will systematically promote the green hydrogen industry. Enhancing the core technology and equipment of green hydrogen and improving the green hydrogen industry chain will be an adequate way to reduce dependence on foreign technologies, lowering the price of green hydrogen products through the scale effect and, thus, expanding the scope of application of green hydrogen. Financial support mechanisms such as providing tax breaks and project subsidies will encourage enterprises to carry out innovative technological research on and invest in the green hydrogen industry.

Zinc oxide has the advantages of a wide bandgap, rich resources, simple preparation, and environmental friendliness. It is a type of ultraviolet detector material with great potential for development. However, the complicated preparation processes and complex device structures limit the application of zinc oxide ultraviolet (UV) detectors. Therefore, in this study, a high-performance UV detector was successfully fabricated based on graphene quantum dot-sensitized GaP@ZnO nanocomposite thin films deposited using a simple spin-coating method.The GQDs/GaP@ZnO device exhibits higher responsibility of 142.2A/W, excellent detectivity of 1.1ⅹ1012 Jones, and a higher EQE of 4.85ⅹ104% under the conditions of 365nm UV light (0.078mW /cm2) and external voltage of 6V. In addition, this study provides a new research method for the preparation of high-performance optoelectronic devices using the cumulative synergistic effect of material composites and surface modification.