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| 1 | Preparation of a double layer SiC coating and its oxidation resistance at 1773K显示文摘 | Dong Huang Mingyu Zhang Qizhong Huang Liang Xue Ping Zhong Liewu Li | 2014 | Corrosion Science2014，，： | 1 |
| 2 | Pathway for high-energy density LiMnFePO_(4) cathodes显示文摘Polyanion cathodes are credited for its thermal stability and better safety,no matter in lithium ion batteries or sodium ion batteries.Polyanion oxides with phosphate groups came to the public's attention in 1997,and the representative material is LiFePO_(4),which has been widely applied and plays a huge role in the field of powder batteries and energy storage system.However,owing to the low lithiation potentials and storage sites,the energy densities of polyanion cathodes have been restricted,resulting of low-endurance and limited application sce-narios.Accordingly,here,we use cheap and environmental friendly raw materials as precursors to synthesis high energy density LiMn_(0.6)Fe_(0.4)PO_(4)@C cathode by a simple spray-drying and high temperature calcination process.The self-designed liquid polyacrylonitrile(LPAN)is added for the intention of nanoparticle coating,conductive network construction and particle granulation.The low-cost and carbon-coated LiMn_(0.6)Fe_(0.4)PO_(4) cathode exhibits excellent reversible capacity,low electrochemical polarization and excellent rate capacity,which maintains 93.5%capacity retention after cycling 1000 times at 5C.The work introduces a new avenue to fabricate olivine structure cathodes with outstanding electrochemical performance for the high energy density lithium ion batteries. | Shaoluan Huang Wenzhong Lin Liewu Li Pei Liu Tao Huang Zhencheng Huang Jinli kong Wei Xiong Wenwei Yu Shenghua Ye Jiangtao Hu Qianling Zhang Jianhong Liu | 2023 | Progress in Natural Science:Materials International2023，33，1： | 0 |
| 3 | Cost-effective natural graphite reengineering technology for lithium ion batteries显示文摘Graphite tailings produced by natural graphite is usually regarded as garbage to be buried underground,which would result in a certain waste of resources.Here,in order to explore the utilization of natural graphite tailings(NGT),a liquid-polyacrylonitrile(LPAN)is used to modify the NGT fragments and aggregate them together to form secondary graphite particles with low surface area and high tap density.Moreover,the modified NGT show much better electrochemical performances than those of original one.When tested in full cells coupled with NMC532 cathode,the material achieves a high rate capability and cycle stability at the cutoff voltage of 4.25 V as well as 4.45 V,which maintains 84.32%capacity retention after 500 cycles at 1 C rate(4.25 V),higher than that of the pristine one(73.65%).The enhanced performances can be attributed to the use of LPAN to create a unique carbon layer upon graphite tailings to reconstruct surface and repair defects,and also to granulate an isotropic structure of secondary graphite particles,which can help to weaken the anisotropy of Li^(+)diffusion pathway and form a uniform,complete and stable solid-electrolyte-interface(SEI)on the surface of primary NGT fragments to promote a fast Li+diffusion and suppress lithium metal dendrites upon charge and discharge. | Pei Liu Hongbin Wang Tao Huang Liewu Li Wei Xiong Shaoluan Huang Xiangzhong Ren Xiaoping Ouyang Jiangtao Hu Qianling Zhang Jianhong Liu | 2024 | Chinese Chemical Letters2024，35，1： | 0 |
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