制氢篇-绿氢降本路径与技术格局

Hydrogen Industry Research Summary Industry Overview - Hydrogen energy is positioned as a core non-electric renewable energy source, complementing lithium batteries with high energy density and long endurance advantages [1][2] - China accounts for 30% of global hydrogen demand, with over 80% being gray hydrogen and only 1% being green hydrogen, indicating significant replacement potential [1] Key Insights and Arguments - The core of reducing green hydrogen costs lies in electricity consumption, with mid-term costs expected to align with industrial by-product hydrogen and long-term costs potentially matching coal-based hydrogen [1][6] - Alkaline electrolysis (ALK) is currently the mainstream technology, while Proton Exchange Membrane (PEM) technology has broad future replacement potential due to its adaptability to wind and solar fluctuations and high current density [1][4] - Carbon Capture, Utilization, and Storage (CCUS) technology increases the cost of coal-based hydrogen by approximately 12 CNY/kg, significantly hindering the large-scale commercialization of blue hydrogen [1][7] - The core barriers for PEM electrolysis include the cost of precious metal catalysts and the need for breakthroughs in domestic proton exchange membrane production [1][13] Market Dynamics - The market landscape is still evolving, with major players like Longi Green Energy and Sungrow Power competing alongside heavy equipment manufacturers like Huadian Heavy Industry [1][14] - Hydrogen is primarily used as an industrial raw material in China, with limited energy application penetration. Future applications are expected to expand into transportation, electricity, and construction sectors [3][4] Cost Structure and Reduction Pathways - The main components of green hydrogen costs are electricity consumption, with pathways for cost reduction including technological improvements in equipment, increasing the proportion of green electricity supply, and lowering upstream wind and solar costs [5][6] - Mid-term projections suggest that alkaline electrolysis costs could approach those of industrial by-product hydrogen, while long-term projections aim for parity with coal-based hydrogen [6] Transitioning Existing Capacity - The low-carbon transition of existing fossil fuel hydrogen production capacity relies on the integration of CCUS technology, which, despite its potential to significantly reduce carbon emissions, currently faces high costs that limit its large-scale application [7] Industrial By-product Hydrogen Sources - Industrial by-product hydrogen primarily comes from five sources: light hydrocarbon utilization, coke industry, chlor-alkali industry, ammonia synthesis, and methanol synthesis [8][9] - The light hydrocarbon utilization sector is in a growth phase, while the coke and chlor-alkali industries are mature, with declining production capacities [8][9] Purification Technologies - The most widely used purification method for fossil fuel and industrial by-product hydrogen is pressure swing adsorption, while cryogenic separation and membrane separation are less commonly applied due to the current market's limited demand for ultra-pure hydrogen [10] Electrolysis Technology Routes - Electrolysis water hydrogen production includes four main technology routes: alkaline electrolysis, PEM, solid oxide electrolysis, and anion exchange membrane electrolysis, each with distinct characteristics and development stages [10][12] - While alkaline electrolysis is the most mature, PEM and solid oxide electrolysis show higher potential for efficiency improvements and cost reductions [12] Market Participation and Competition - The domestic electrolysis market is characterized by significant uncertainty, with various types of companies participating, including listed renewable energy firms and heavy equipment manufacturers [14]