The solid polymer electrolyte(SPE) is one of the most promising candidates for building solid lithium batteries with high energy density and safety due to its advantages of flexibility and light-weight.However,the con...The solid polymer electrolyte(SPE) is one of the most promising candidates for building solid lithium batteries with high energy density and safety due to its advantages of flexibility and light-weight.However,the conventional monolayered electrolytes usually exhibit unstable contacts with either high-voltage cathodes or Li-metal anodes during cell operation.Herein,heterogeneous dual-layered electrolyte membranes(HDEMs) consisting of the specific functional polymer matrixes united with the designed solid ceramic fillers are constructed to address the crucial issues of interfacial instability.The electrolyte layers composed of the high-conductivity and oxidation-resistance polyacrylonitrile(PAN) combined with Li_(0.33)La_(0.557)TiO_(3) nanofibers are in contact with the high-voltage cathodes,achieving the compatible interface between the cathodes and the electrolytes.Meanwhile,the electrolyte layers composed of the highstability and dendrite-resistance polyethylene oxide(PEO) with Li_(6.4)La_(3) Zr_(1.4)Ta_(0.6)O_(12) nanoparticles are in contact with the Li-metal anodes,aiming to suppress the dendrite growth,as well as avoid the passivation between the PAN and the Li-metal.Consequently,the solid LiNi_(0.6)Co_(0.2)Mn_(0.2)O2‖Li full cells based on the designed HDEMs show the good rate and cycling performance,i.e.the discharge capacity of 170.1 mAh g^(-1) with a capacity retention of 78.2% after 100 cycles at 0.1 C and 30℃.The results provide an effective strategy to construct the heterogeneous electrolyte membranes with double-side stable electrode/-electrolyte interfaces for the high-voltage and dendrite-free solid lithium batteries.展开更多
WITH all of its fun and games, the Spring Festival fair at the Temple of Earth in Beijing is a good place to spend the holidays. Ever since 1985, when the temple first resumed the practice of holding the fair during t...WITH all of its fun and games, the Spring Festival fair at the Temple of Earth in Beijing is a good place to spend the holidays. Ever since 1985, when the temple first resumed the practice of holding the fair during the Spring Festival, the annual event has attracted more and more people every year. In fact, the temple fair has gradually developed into a holiday exhibition of traditional local culture as well as an influential mass cultural activity. The opening ceremony is a major part of the temple fair. All who attend are impressed by its magnificence and liveliness. The arch tower at the展开更多
基金supported by the National Key R&D Program of China (Grant No. 2018YFB0104300)the National Natural Science Foundation of China (Grant No. U1932205, 51771222, 22005163 and 52002197)the ‘‘Taishan Scholars Program”, and the Project of Qingdao Leading Talents in Entrepreneurship and Innovation。
文摘The solid polymer electrolyte(SPE) is one of the most promising candidates for building solid lithium batteries with high energy density and safety due to its advantages of flexibility and light-weight.However,the conventional monolayered electrolytes usually exhibit unstable contacts with either high-voltage cathodes or Li-metal anodes during cell operation.Herein,heterogeneous dual-layered electrolyte membranes(HDEMs) consisting of the specific functional polymer matrixes united with the designed solid ceramic fillers are constructed to address the crucial issues of interfacial instability.The electrolyte layers composed of the high-conductivity and oxidation-resistance polyacrylonitrile(PAN) combined with Li_(0.33)La_(0.557)TiO_(3) nanofibers are in contact with the high-voltage cathodes,achieving the compatible interface between the cathodes and the electrolytes.Meanwhile,the electrolyte layers composed of the highstability and dendrite-resistance polyethylene oxide(PEO) with Li_(6.4)La_(3) Zr_(1.4)Ta_(0.6)O_(12) nanoparticles are in contact with the Li-metal anodes,aiming to suppress the dendrite growth,as well as avoid the passivation between the PAN and the Li-metal.Consequently,the solid LiNi_(0.6)Co_(0.2)Mn_(0.2)O2‖Li full cells based on the designed HDEMs show the good rate and cycling performance,i.e.the discharge capacity of 170.1 mAh g^(-1) with a capacity retention of 78.2% after 100 cycles at 0.1 C and 30℃.The results provide an effective strategy to construct the heterogeneous electrolyte membranes with double-side stable electrode/-electrolyte interfaces for the high-voltage and dendrite-free solid lithium batteries.
文摘WITH all of its fun and games, the Spring Festival fair at the Temple of Earth in Beijing is a good place to spend the holidays. Ever since 1985, when the temple first resumed the practice of holding the fair during the Spring Festival, the annual event has attracted more and more people every year. In fact, the temple fair has gradually developed into a holiday exhibition of traditional local culture as well as an influential mass cultural activity. The opening ceremony is a major part of the temple fair. All who attend are impressed by its magnificence and liveliness. The arch tower at the
