公开(公告)号：US11670774B2

公开(公告)日：2023-06-06

申请号：US16650606

申请日：2018-09-04

申请人： Beijing HiNa Battery Technology Co., Ltd. ,  Institute of Physics, The Chinese Academy of Sciences

发明人： Yaxiang Lu ,  Yongsheng Hu ,  Kun Tang ,  Hong Li ,  Xuejie Huang ,  Liquan Chen

IPC分类号： H01M4/04 ,  H01M4/133 ,  H01M4/1393 ,  H01M10/054 ,  H01M4/583 ,  H01M4/02 ,  H01M4/587

CPC分类号： H01M4/583 ,  H01M4/0442 ,  H01M4/133 ,  H01M4/1393 ,  H01M10/054 ,  H01M4/049 ,  H01M4/0471 ,  H01M4/587 ,  H01M2004/027

摘要： Embodiments of the present disclosure are a pitch-based negative electrode material for a sodium-ion battery and related methods and applications. The method comprises: placing a pitch recursor into a muffle furnace to allow the pitch precursor to experience pre-oxidation for 2 to 6 hours at a temperature ranging from 200° C. to 350° C., to obtain pre-oxidized pitch; placing the pre-oxidized pitch into a high-temperature carbonization furnace, and increasing the temperature to 1300° C. to 1600° C. at a temperature increase speed of 0.5° C./min to 5° C./min, and carrying out thermal treatment on the pre-oxidized pitch in an inert atmosphere for 1 to 10 hours, to allow the pre-oxidized pitch to experience carbonization reactions, oxygen in the pre-oxidized pitch being used for breaking an ordered structure of the pitch during the carbonization of the pre-oxidized pitch, so as to form a wedge-shaped voids disordered structure.

公开(公告)号：US20210202942A1

公开(公告)日：2021-07-01

申请号：US16650606

申请日：2018-09-04

申请人： Beijing HiNa Battery Technology Co., Ltd. ,  Institute of Physics, The Chinese Academy of Sciences

发明人： Yaxiang Lu ,  Yongsheng Hu ,  Kun Tang ,  Hong Li ,  Xuejie Huang ,  Liquan Chen

IPC分类号： H01M4/583 ,  H01M10/054 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/04

摘要： Embodiments of the present disclosure are a pitch-based negative electrode material for a sodium-ion battery and related methods and applications. The method comprises: placing a pitch recursor into a muffle furnace to allow the pitch precursor to experience pre-oxidation for 2 to 6 hours at a temperature ranging from 200° C. to 350° C., to obtain pre-oxidized pitch; placing the pre-oxidized pitch into a high-temperature carbonization furnace, and increasing the temperature to 1300° C. to 1600° C. at a temperature increase speed of 0.5° C./min to 5° C./min, and carrying out thermal treatment on the pre-oxidized pitch in an inert atmosphere for 1 to 10 hours, to allow the pre-oxidized pitch to experience carbonization reactions, oxygen in the pre-oxidized pitch being used for breaking an ordered structure of the pitch during the carbonization of the pre-oxidized pitch, so as to form a wedge-shaped voids disordered structure.

公开(公告)号：US20210253427A1

公开(公告)日：2021-08-19

申请号：US16973358

申请日：2019-06-03

申请人： Institute of Physics, The Chinese Academy of Sciences

发明人： Yongsheng Hu ,  Yuruo Qi ,  Yaxiang Lu ,  Liquan Chen

IPC分类号： C01B32/05 ,  H01M10/0525

摘要： A carbon-based anode material with high ramp capacity, a preparation method therefore, and a use thereof. The method includes placing a carbon source precursor into a crucible and heating to 400° C-1000° C. at a heating rate of 0.2° C./min-30° C./min under an inert atmosphere, wherein the precursor includes any one or a combination of at least two of fossil fuel, biomass, resin, and organic chemicals; and carrying out heat treatment on the precursor at a temperature of 400° C. to 1000° C. for 0.5-48 hours to carbonize the precursor to obtain a carbon-based negative electrode material. The specific surface area of the anode material is less than 10 m2/g. and assembling the obtained electrode material into a sodium ion battery and then carrying out charging and discharging between 0 and 2.5 V, to obtain a voltage curve. The ramp capacity being above 180 mAh/g and the first-cycle Coulombic efficiency is above 75%.

公开(公告)号：US10651472B2

公开(公告)日：2020-05-12

申请号：US15752399

申请日：2015-11-11

申请人： INSTITUTE OF PHYSICS,THE CHINESE ACADEMY OF SCIENCES

发明人： Yongsheng Hu ,  Yunming Li ,  Liquan Chen

IPC分类号： H01M4/02 ,  H01M4/587 ,  H01M4/1393 ,  H01M4/133 ,  H01M4/36 ,  H01M10/054

摘要： The invention discloses a sodium ion secondary battery anode material, and a preparing method and application thereof. The material is an amorphous carbon material, and is obtained by performing high-temperature pyrolyzing on coal as a main raw material, the material is prepared by using coal and a hard carbon precursor as raw materials, mechanical mixing after adding a solvent, drying, and crosslinking, curing and pyrolyzing under an inert gas atmosphere, or prepared by using coal as a raw material, and pyrolyzing under an inert gas atmosphere. The sodium ion secondary battery prepared from the amorphous carbon material as anode material has lower cost and higher work voltage, and is stable in cycle and good in safety.

公开(公告)号：US09728780B2

公开(公告)日：2017-08-08

申请号：US14913389

申请日：2015-06-18

申请人： INSTITUTE OF PHYSICS, THE CHINESE ACADEMY OF SCIENCES

发明人： Yongsheng Hu ,  Linqin Mu ,  Liquan Chen

IPC分类号： H01M4/02 ,  H01M4/485 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M10/054

CPC分类号： H01M4/485 ,  C01G49/0072 ,  C01G53/50 ,  C01P2002/72 ,  C01P2002/76 ,  C01P2004/03 ,  C01P2004/61 ,  C01P2004/62 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M10/054 ,  H01M2004/028 ,  H01M2220/10

摘要： A layered oxide material, a preparation method, an electrode, a secondary battery and use are disclosed. The layered oxide material has a general chemical formula NaxCuiFejMnkMyO2+β, in which M is an element that is doped for replacing the transition metals; x, y, i, j, k, and β are respectively the molar ratios of respective elements, provided that x, y, i, j, k, and β satisfy the relations: y+i++j+k=1, and x+my+2i+3j+4k=2(2+β), where 0.8≦x≦1, 0