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Russian and Chinese scientists have cooperated to increase the capacity of lithium-ion batteries by 15%. According to foreign media reports, lithium-ion batteries are widely used in mobile phones, laptops, pacemakers and electric vehicles. Now scientists are trying to increase battery power while reducing battery size. Russian and Chinese scientists, together with an industrial partner, formed a team that successfully increased the battery's energy capacity by 15%. This time, scientists have successfully improved the efficiency of batteries by adding solid electrolytes to their cathodes. The solid electrolyte was synthesized by a graduate student at St. Petersburg's Peter the Great Polytechnic University (SPbPU). Compared with liquid electrolyte, the researchers have successfully used solid electrolyte to increase battery capacity by 15%, which also helps to reduce the weight of the whole product. The battery test was carried out in the laboratory. The battery samples were developed by Joint Innovation Center "Science - Technologies" of ENV, which was founded by China in cooperation with Peter the Great Polytechnic University in St. Petersburg. This news has taken a reassuring pill for the domestic new energy industry, consumers and spare parts enterprises. Feilongjiangli, as one of the components supplying flat electronic pump and temperature control module for new energy vehicles, hopes to make a breakthrough in the whole industry.