The diffusion trajectory of a Brownian particle passing over the saddle point of a two-dimensional quadratic potential energy surface is tracked in detail according to the deep learning strategies.Generative adversari...The diffusion trajectory of a Brownian particle passing over the saddle point of a two-dimensional quadratic potential energy surface is tracked in detail according to the deep learning strategies.Generative adversarial networks(GANs)emanating in the category of machine learning(ML)frameworks are used to generate and assess the rationality of the data.While their optimization is based on the long short-term memory(LSTM)strategies.In addition to drawing a heat map,the optimal path of two-dimensional(2D)diffusion is simultaneously demonstrated in a stereoscopic space.The results of our simulation are completely consistent with the previous theoretical predictions.展开更多
The development of safe lithium metal batteries(LMBs)is critical for practical applications with high-energy density demanding.In this study,a phosphorus-containing diethyl vinylphosphonate(DEVP)-based gel polymer ele...The development of safe lithium metal batteries(LMBs)is critical for practical applications with high-energy density demanding.In this study,a phosphorus-containing diethyl vinylphosphonate(DEVP)-based gel polymer electrolyte(PD-VI GPE)with high ionic conductivity of 6.38 mS cm^(-1) is prepared by in situγ-ray radiation polymerization.The PD-VI GPE induces the formation of a uniform,dense fluorine-,and phosphorus-rich solid electrolyte interphase(SEI)in Li||Cu coin cells,effectively suppressing interfacial side reactions and enabling stable lithium deposition.Pouch cells assembled with the PD-VI GPE(2 g Ah^(-1))exhibit a specific energy of 420 Wh kg^(-1) with 89%capacity retention over 80 cycles.A novel in situ separator thermal shrinkage assay reveals that the PD-VI GPE-coated Celgard separator maintains structural integrity at 129℃.Phosphorus-functional groups in the PD-VI GPE act as oxygen radical scavengers,inhibiting cathode-derived O_(2) evolution in abusive conditions.Thus,LMBs assembled with the PD-VI GPE demonstrate suppressed thermal runaway and mechanical abuse tolerance.This study establishes a material design paradigm that concurrently addresses interfacial stability and safety challenges,paving the way for the application of LMBs in energy systems with high-safety requirements.展开更多
基金supported by the Natural Science Foundation of Shandong Province(Grant No.ZR2020MA092)the Innovation Project for Graduate Students of Ludong University(Grant No.IPGS2024-048).
文摘The diffusion trajectory of a Brownian particle passing over the saddle point of a two-dimensional quadratic potential energy surface is tracked in detail according to the deep learning strategies.Generative adversarial networks(GANs)emanating in the category of machine learning(ML)frameworks are used to generate and assess the rationality of the data.While their optimization is based on the long short-term memory(LSTM)strategies.In addition to drawing a heat map,the optimal path of two-dimensional(2D)diffusion is simultaneously demonstrated in a stereoscopic space.The results of our simulation are completely consistent with the previous theoretical predictions.
基金the financial support from the National Natural Science Foundation of China(No.12375336,11875078)。
文摘The development of safe lithium metal batteries(LMBs)is critical for practical applications with high-energy density demanding.In this study,a phosphorus-containing diethyl vinylphosphonate(DEVP)-based gel polymer electrolyte(PD-VI GPE)with high ionic conductivity of 6.38 mS cm^(-1) is prepared by in situγ-ray radiation polymerization.The PD-VI GPE induces the formation of a uniform,dense fluorine-,and phosphorus-rich solid electrolyte interphase(SEI)in Li||Cu coin cells,effectively suppressing interfacial side reactions and enabling stable lithium deposition.Pouch cells assembled with the PD-VI GPE(2 g Ah^(-1))exhibit a specific energy of 420 Wh kg^(-1) with 89%capacity retention over 80 cycles.A novel in situ separator thermal shrinkage assay reveals that the PD-VI GPE-coated Celgard separator maintains structural integrity at 129℃.Phosphorus-functional groups in the PD-VI GPE act as oxygen radical scavengers,inhibiting cathode-derived O_(2) evolution in abusive conditions.Thus,LMBs assembled with the PD-VI GPE demonstrate suppressed thermal runaway and mechanical abuse tolerance.This study establishes a material design paradigm that concurrently addresses interfacial stability and safety challenges,paving the way for the application of LMBs in energy systems with high-safety requirements.
