In the production workshop of Chengde Xinxin Vanadium and Titanium Energy Storage Technology Co., LTD., the automatic assembly line of all-vanadium flow battery is running in an orderly manner. At present, the enterprise has an annual production capacity of 1GWh (100 million watt-hours) of all-vanadium flow battery, and has realized independent production of the whole industry chain from vanadium electrolyte, proton membrane to reactor.

Li Zixuan, technician of Chengde Xinxin Vanadium Titanium Energy Storage Technology Co., LTD. : The biggest advantage of all-vanadium flow battery is high safety, long life cycle, recycling times up to 20,000 times, and recyclable materials, environmentally friendly, especially suitable for large-scale long-term energy storage, widely used in the field of new energy power generation and power grid peak regulation.

Relying on Chengde's vanadium and titanium resource advantages, in 2015, Xinxin Vanadium and titanium began to engage in the research and development and production of vanadium batteries. At the beginning of the establishment of the enterprise, because it did not master the core technology, many key materials depended on imports, which seriously restricted the development of the industry. The proton membrane, as the core component of all-vanadium flow battery, once accounted for about 30% of the battery cost.

Han Hongtao, deputy manager of Chengde Xinxin Vanadium and Titanium Energy Storage Technology Co., LTD. : If a proton membrane was imported at that time, its cost was about 2000 US dollars (per square meter), which was relatively high and the supply cycle was uncontrollable.

How to get rid of import monopoly and achieve cost reduction and efficiency increase? The coordinated development of the Beijing-Tianjin-Hebei region has helped enterprises find their way. In 2023, Xinxin Vanadium Titanium and Tsinghua University will jointly build a special research laboratory in Beijing, focusing on improving the performance of proton membrane, reducing the resistance of membrane surface, reducing the permeability of vanadium ion and other core problems, forming a complete innovation chain of "basic research-technology transformation - engineering verification".

Liu Shengnan, CEO of Chengde Xinxin Vanadium and Titanium Energy Storage Technology Co., LTD. : On the basis of the first generation (membrane) and the second generation (membrane), we have done the research and development of special scenes. In terms of its cold and high temperature resistance, we have developed a special proton membrane suitable for batteries in sand desert scenarios, that is, deserts, Gobi and desert beaches.

Through cooperation with Tsinghua University to carry out technological research and development of key materials, Xinxinvanadium titanium has obtained the national patent of "method for preparing proton conduction membrane and proton conduction membrane" technology.

Han Hongtao, deputy manager of Chengde Xinxin Vanadium and Titanium Energy Storage Technology Co., LTD. : Its cost has been reduced to 600 yuan now, which greatly reduces the cost of vanadium batteries and is more conducive to the promotion of vanadium batteries.

With the application of all-vanadium flow battery and AI system in smart city, new vanadium titanium stood out in the first Xiongan Future City Scenario International Optical Storage and Direct Flexibility Technology Application Competition, and will be applied to multiple scenarios of Xiongan smart City.

Liu Shengan, CEO of Chengde Xinxin Vanadium and Titanium Energy Storage Technology Co., LTD. : Next, we will put into operation a 400 MWH all-vanadium flow battery energy storage power station in Xiongan to serve the electricity consumption in the smart city. It can provide this daily electricity for millions of families.

The 10th Plenary session of the 10th Provincial Party Committee pointed out that in promoting the coordinated development of the Beijing-Tianjin-Hebei region, we should better develop ourselves, strengthen collaborative innovation and industrial cooperation, and improve the efficiency and proportion of the transformation of scientific and technological achievements within the region. With new vanadium and titanium as the starting point, Chengde city has built 31 provincial-level joint research and development platforms, implemented 109 Beijing-Tianjin science and technology cooperation projects, absorbed technology contract turnover of 32.8 billion yuan, and accelerated the incubation and transformation of a number of cutting-edge achievements, and accelerated the agglomeration of talents, technologies and projects. The model of "Beijing-Tianjin R&D and Chengde transformation" is accelerating.