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Innovative production of battery materials empowers China's new energy development

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      China

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      Innovative production of battery materials empowers China's new energy development

      2024-08-13 17:22 Last Updated At:08-14 05:17

      Guizhou Province in southwest China has focused its efforts on the research and development of battery materials to better support the boom of new energy industry in the country.

      Lithium iron phosphate batteries are widely used in new energy vehicles and energy storage due to their long service life, safety, wide source of raw materials, and low price. 

      Guizhou has rich phosphate resources and mature phosphorus chemical technology, and has supplied a large amount of iron phosphate, one of the most important raw materials for the production of lithium iron phosphate batteries, to battery manufacturers nationwide.

      Founded in October 2022, the Guizhou New Energy Materials Innovation Center mainly focuses on the battery material industry chain. It has conducted research on core technologies and industrialization of research and development results.

      Over the past few years, researchers here have tackled many challenges to optimize the flows of production process of critical chemicals required for the battery production. 

      For example, a set of continuous reaction crystallization equipment for iron phosphate, which is independently developed by the researchers, can now make the crystal shape and morphology of the product controllable and adjustable.

      The researchers tried to directly make lithium iron phosphate batteries by combining iron phosphate with lithium and carbon sources, and conducted performance tests.

      "In terms of capacity, the current theoretical value of lithium iron phosphate is 170. Now we can achieve 160 on our product. So basically we can say we have reached 90 percent of its potential performance," said Peng Hainan, a research and development engineer at the center.

      At present, this set of equipment has already been applied to the production line. This close combination of research and production has injected momentum into the development of NEV industry in Guizhou.

      The average life of current NEV batteries is five to eight years, which means a large number of batteries will retire in the coming years. It is crucial that these batteries are properly recycled.

      At the Guizhou New Energy Materials Innovation Center, researchers have developed a unique wet phosphoric acid purification technology to successfully recover all elements such as phosphorus, iron, and lithium from retired batteries.

      "Our wet process mainly uses lithium iron phosphate black powder as a raw material. We need to first add in acid, such as sulfuric acid, nitric acid, and hydrochloric acid. Then we leach out the lithium and iron elements and filter them. After filtering, we got the lithium sulfate solution. We need to add sodium carbonate in for precipitation to get our final product, lithium carbonate," said Yu Xinxin, a researcher of the center.

      With the application of this technology, the recycling rate of lithium carbonate can reach 93 percent or above, which also provides strong support for the sustainable development of the new energy industry.

      Innovative production of battery materials empowers China's new energy development

      Innovative production of battery materials empowers China's new energy development

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      People across China make preparations to welcome Spring Festival

      2025-01-21 06:41 Last Updated At:07:17

      A festive atmosphere is building up as people across China have been making preparations to ring in the Spring Festival next week, with lights and decorations set everywhere, and with New Year goods markets all seeing booming sales.

      The Spring Festival, which marks the start of the Chinese Lunar New Year, is the most important annual holiday in China, when people across the country return to their hometowns for Chinese Lunar New Year celebrations and family reunion. 

      In Xi'an City of northwest China's Shaanxi Province, a grand lantern show is in its final stage of preparation before opening to the public ahead of the eve of the 2025 Chinese Lunar New Year. To be lit up on Wednesday, the large light sets presented at the event will draw numerous visitors, with lanterns that replicate 38 cultural relics as the highlight.

      Buying New Year flowers has been a custom for Chinese people. In Yancheng City of east China's Jiangsu Province, various flowers which have auspicious meanings are already in high demand.

      This year, tulips bred locally have been put on sale, and quickly become a favorable choice for many customers.  

      "I have never seen this kind of flower before. I think it is really bright-colored. Therefore, I decided to buy some to enhance the festive atmosphere at home," said Zhang Jinjian, a local resident.

      The Anchang ancient town in Shaoxing City of east China's Zhejiang Province has a time-honored custom of making aired sausages and spiced duck.

      As the Spring Festival draws near, plenty of visitors and tourists choose to purchase these local delicacies as ingredients for their Chinese New Year feast.

      "The number of tourists has been increasing, so the sales of our spiced meat have been quite good. Compared with the same period of last year, our sales is expected to increase by about 50,000 yuan (about 6,835 U.S. dollars). We will earn an additional 200,000 to 300,000 yuan (27,335 to 41,000 U.S. dollars) in sales during this whole winter," said Yang Jing, owner of a local spiced meat shop.

      In southwest China's Yunnan Province, the "Tiaocai dance" is a time-honored tradition of the Yi ethnic minority group. The dance is presented in the form of serving dishes while dancing to the rhythm. It usually happens on a joyous or grand occasion.

      Since the most significant annual festival is around the corner, Yi people have dressed up in traditional costumes, and got ready to welcome the arrival of the Chinese Lunar New Year with the special dance.  

      People across China make preparations to welcome Spring Festival

      People across China make preparations to welcome Spring Festival

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