Nickel Hydride Batteries

　　my country's Nickel Hydride Batteries researchers are carrying out a lot of original work

　　Countries such as China, the United States, Japan, South Korea, Germany, and the United Kingdom have formulated their own battery development strategies in order to promote the innovation of battery principles and the development of core technologies to support the sustainable development of contemporary society. With the support of the state and society, my country's Nickel Hydride Batteries researchers continue to carry out scientific research around the unchanging "original intention" of efficient energy storage.

　　At present, the mainstream research direction in the field of lithium batteries is still focused on finding safer and more efficient anode materials. The Tsinghua University research team led by the author has carried out original scientific research in the field of nucleation and dendrite-free growth of metallic lithium anodes since 2013.

　　Research has found that adding a lithiophilic nitrogen-doped carbon skeleton to the metallic lithium negative electrode allows the free lithium ions in the battery to first run to the frog mother, the nitrogen-doped site, just like a tadpole looking for its mother at the beginning of charging. Evenly distributed "small groups" of metallic lithium are formed in the battery; during the charging process, the "small groups" of "little tadpoles and mother frogs" continue to "hug together." This uniform deposition behavior can avoid the growth of metallic lithium dendrites caused by less nucleation in the past.

　　The paper based on the above results was selected as the cover of the top journal "German Applied Chemistry" in the field of chemistry in 2017. This year, it was also selected for the "Widely Attention Academic Papers in Beijing Area" selection event hosted by the Beijing Association for Science and Technology. Based on the above-mentioned energy chemical mechanism, the research team further designed a carbon-lithium composite anode. These composite metal lithium anodes not only avoid "dangerous dendrites", but also exhibit excellent electrochemical properties, effectively improve the utilization efficiency and safety of metal lithium anodes, and also provide opportunities for secondary batteries based on metal lithium. New practical exploration ideas and broader application prospects.

　　In addition to lithium batteries, the use of sodium, potassium, aluminum, zinc and other ions and the development of new energy chemistry principles are also expected to propose new energy storage devices with unique properties. In addition to electrochemical energy storage, the use of other energy storage and conversion methods as well as new energy carriers is expected to build disruptive energy storage technology and meet future society's new needs for energy storage equipment.

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