CN112563503A - 一种自填充包覆硅基复合材料、其制备方法及其应用 - Google Patents

一种自填充包覆硅基复合材料、其制备方法及其应用 Download PDF

Info

Publication number
CN112563503A
CN112563503A CN202011418740.9A CN202011418740A CN112563503A CN 112563503 A CN112563503 A CN 112563503A CN 202011418740 A CN202011418740 A CN 202011418740A CN 112563503 A CN112563503 A CN 112563503A
Authority
CN
China
Prior art keywords
precursor
composite material
self
based composite
coated silicon
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202011418740.9A
Other languages
English (en)
Inventor
郑安华
余德馨
仰永军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Kaijin New Energy Technology Co Ltd
Original Assignee
Guangdong Kaijin New Energy Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Kaijin New Energy Technology Co Ltd filed Critical Guangdong Kaijin New Energy Technology Co Ltd
Priority to CN202011418740.9A priority Critical patent/CN112563503A/zh
Publication of CN112563503A publication Critical patent/CN112563503A/zh
Priority to CN202110641324.3A priority patent/CN113193201A/zh
Priority to JP2021569914A priority patent/JP7357699B2/ja
Priority to PCT/CN2021/101987 priority patent/WO2022121281A1/zh
Priority to KR1020217035148A priority patent/KR20220083974A/ko
Priority to US17/494,019 priority patent/US20220181608A1/en
Priority to DE102021005842.9A priority patent/DE102021005842A1/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/04—Processes of manufacture in general
    • H01M4/0471—Processes of manufacture in general involving thermal treatment, e.g. firing, sintering, backing particulate active material, thermal decomposition, pyrolysis
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/362—Composites
    • H01M4/366—Composites as layered products
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/05—Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/02—Silicon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/139—Processes of manufacture
    • H01M4/1395—Processes of manufacture of electrodes based on metals, Si or alloys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
    • H01M4/386—Silicon or alloys based on silicon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/483—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides for non-aqueous cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • H01M4/624—Electric conductive fillers
    • H01M4/625—Carbon or graphite
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • H01M4/628—Inhibitors, e.g. gassing inhibitors, corrosion inhibitors
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/80—Particles consisting of a mixture of two or more inorganic phases
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M2004/021—Physical characteristics, e.g. porosity, surface area
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
    • H01M2004/027—Negative electrodes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Silicon Compounds (AREA)

Abstract

本发明涉及电池负极材料领域，特别是涉及一种自填充包覆硅基复合材料的制备方法，包括如下步骤：(1)将纳米硅、分散剂、粘结剂在溶剂中混合分散均匀，得到前驱体A；(2)将前驱体A与碳源混合均匀，得到前驱体B；(3)将前驱体B进行高温真空/加压碳化，得到前驱体C；(4)将前驱体C进行粉碎筛分处理，得到前驱体D；(5)将前驱体D进行碳包覆，得到所述的自填充包覆硅基复合材料。本发明提供一种自填充包覆硅基复合材料的制备方法，其工艺简单易行，产品性能稳定，具有良好的应用前景。

Description

一种自填充包覆硅基复合材料、其制备方法及其应用
技术领域
本发明涉及电池负极材料领域，特别是涉及一种自填充包覆硅基复合材料、其制备方法及其应用。
背景技术
目前商业化负极材料主要为天然石墨、人造石墨和中间相等石墨类材料，但因其理论容量较低(372mAh/g)，无法满足于市场的需求。近年来，人们的目光瞄准新型高比容量负极材料：储锂金属及其氧化物(如Sn，Si)和锂过渡金属磷化物。在众多新型高比容量负极材料中，Si因具有高的理论比容量(4200mAh/g)而成为最具潜力的可替代石墨类材料之一，但是硅基在充放电过程中存在巨大的体积效应，易发生破裂和粉化，从而丧失与集流体的接触，造成循环性能急剧下降；此外硅基材料的本征电导率低，倍率性能差。
因此降低体积膨胀效应、提升循环性能和倍率性能对硅基材料在锂离子电池中的应用有重大意义。
发明内容
为解决上述技术问题，本发明提供一种自填充包覆硅基复合材料的制备方法，其工艺简单易行，产品性能稳定，具有良好的应用前景。
本发明采用如下技术方案：
一种自填充包覆硅基复合材料的制备方法，包括如下步骤：
(1)将纳米硅、分散剂、粘结剂在溶剂中混合分散均匀，得到前驱体A；
(2)将前驱体A与碳源混合均匀，得到前驱体B；
(3)将前驱体B进行高温真空/加压碳化，得到前驱体C；
(4)将前驱体C进行粉碎筛分处理，得到前驱体D；
(5)将前驱体D进行碳包覆，得到所述的自填充包覆硅基复合材料。
一种自填充包覆硅基复合材料，使用上述制备方法制得的高首效多元包覆硅基复合材料。
一种自填充包覆硅基复合材料的应用，使用自填充包覆硅基复合材料应用于锂离子电池负极材料。
本发明的有益效果为：
本发明具有高首效、低膨胀和长循环等优点的锂离子电池硅碳负极材料，自填充包覆硅基复合材料纳米硅之间填充的导电碳网络不仅能效的提高硅基材料的导电性，同时有效的缓解充放电过程中的体积效应，有效的避免了材料在循环过程中的粉化。最外层碳包覆层避免了纳米硅与电解液直接接触，能进一步有效的提高硅基材料的导电性，同时能有效的缓解充放电过程中的体积效应，有效的避免了材料在循环过程中的粉化，缓解了硅基材料的体积膨胀效应、提升了循环性能，能提高材料的导电性和倍率性能。
附图说明
图1为本发明的自填充包覆硅基复合材料的结构示意图；
图2为图1的自填充包覆硅基复合材料的电镜图；
图3为图1的自填充包覆硅基复合材料的电压-比容量图。
具体实施方式
如图1至图3所示，一种自填充包覆硅基复合材料的制备方法，包括如下步骤：
(1)将纳米硅、分散剂、粘结剂在溶剂中混合分散均匀，得到前驱体A；
(2)将前驱体A与碳源混合均匀，得到前驱体B；
(3)将前驱体B进行高温真空/加压碳化，得到前驱体C；
(4)将前驱体C进行粉碎筛分处理，得到前驱体D；
(5)将前驱体D进行碳包覆，得到所述的自填充包覆硅基复合材料。
一种自填充包覆硅基复合材料，使用上述制备方法制得高首效多元包覆硅基复合材料。
一种自填充包覆硅基复合材料的应用，使用所述的自填充包覆硅基复合材料应用于锂离子电池负极材料。
利用喷雾制备由纳米硅组成的多孔结构前驱体A；再利用真空/加压烧结，使得熔融状态下的碳源自组装填充前驱体里面的孔洞，随后的高温碳化得到实心的前驱体C；最后粉碎筛分和表面改性处理得到最终的自填充包覆硅基复合材料；自填充包覆硅基复合材料包括有纳米硅、填充层、包覆层。
本发明具有高首效、低膨胀和长循环等优点的锂离子电池硅碳负极材料，自填充包覆硅基复合材料纳米硅之间填充的导电碳网络不仅能效的提高硅基材料的导电性，同时有效的缓解充放电过程中的体积效应，有效的避免了材料在循环过程中的粉化。最外层碳包覆层避免了纳米硅与电解液直接接触，能进一步有效的提高硅基材料的导电性，同时能有效的缓解充放电过程中的体积效应，有效的避免了材料在循环过程中的粉化，缓解了硅基材料的体积膨胀效应、提升了循环性能，能提高材料的导电性和倍率性能。

Claims (3)

1.一种自填充包覆硅基复合材料的制备方法，其特征在于，包括如下步骤：
(1)将纳米硅、分散剂、粘结剂在溶剂中混合分散均匀，得到前驱体A；
(2)将前驱体A与碳源混合均匀，得到前驱体B；
(3)将前驱体B进行高温真空/加压碳化，得到前驱体C；
(4)将前驱体C进行粉碎筛分处理，得到前驱体D；
(5)将前驱体D进行碳包覆，得到所述的自填充包覆硅基复合材料。
2.一种自填充包覆硅基复合材料，其特征在于，使用如权利要求1所述制备方法制得高首效多元包覆硅基复合材料。
3.一种自填充包覆硅基复合材料的应用，其特征在于，使用如权利要求2所述的自填充包覆硅基复合材料应用于锂离子电池负极材料。
CN202011418740.9A 2020-12-07 2020-12-07 一种自填充包覆硅基复合材料、其制备方法及其应用 Withdrawn CN112563503A (zh)

Priority Applications (7)

Application Number Priority Date Filing Date Title
CN202011418740.9A CN112563503A (zh) 2020-12-07 2020-12-07 一种自填充包覆硅基复合材料、其制备方法及其应用
CN202110641324.3A CN113193201A (zh) 2020-12-07 2021-06-09 一种自填充包覆硅基复合材料、其制备方法及其应用
JP2021569914A JP7357699B2 (ja) 2020-12-07 2021-06-24 自己充填被覆ケイ素ベース複合材料、その調製方法及びその応用
PCT/CN2021/101987 WO2022121281A1 (zh) 2020-12-07 2021-06-24 一种自填充包覆硅基复合材料、其制备方法及其应用
KR1020217035148A KR20220083974A (ko) 2020-12-07 2021-06-24 자가충진 코팅 실리콘 기반 복합 재료 및 그 제조 방법 및 응용
US17/494,019 US20220181608A1 (en) 2020-12-07 2021-10-05 Self-filled coated silicon-based composite material, method for preparing same, and use thereof
DE102021005842.9A DE102021005842A1 (de) 2020-12-07 2021-11-25 Selbstfüllend beschichtetes Verbundmaterial auf Siliziumbasis, Herstellungsverfahren dafür und Anwendung davon

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011418740.9A CN112563503A (zh) 2020-12-07 2020-12-07 一种自填充包覆硅基复合材料、其制备方法及其应用

Publications (1)

Publication Number Publication Date
CN112563503A true CN112563503A (zh) 2021-03-26

Family

ID=75059541

Family Applications (2)

Application Number Title Priority Date Filing Date
CN202011418740.9A Withdrawn CN112563503A (zh) 2020-12-07 2020-12-07 一种自填充包覆硅基复合材料、其制备方法及其应用
CN202110641324.3A Pending CN113193201A (zh) 2020-12-07 2021-06-09 一种自填充包覆硅基复合材料、其制备方法及其应用

Family Applications After (1)

Application Number Title Priority Date Filing Date
CN202110641324.3A Pending CN113193201A (zh) 2020-12-07 2021-06-09 一种自填充包覆硅基复合材料、其制备方法及其应用

Country Status (6)

Country Link
US (1) US20220181608A1 (zh)
JP (1) JP7357699B2 (zh)
KR (1) KR20220083974A (zh)
CN (2) CN112563503A (zh)
DE (1) DE102021005842A1 (zh)
WO (1) WO2022121281A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022121281A1 (zh) * 2020-12-07 2022-06-16 广东凯金新能源科技股份有限公司 一种自填充包覆硅基复合材料、其制备方法及其应用
CN117174857A (zh) * 2023-08-29 2023-12-05 广东凯金新能源科技股份有限公司 硅基复合材料及其制备方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114142005B (zh) * 2021-11-09 2023-03-31 广东凯金新能源科技股份有限公司 一种长循环、低膨胀内孔结构硅碳复合材料、其制备方法及其应用
CN116646482B (zh) * 2023-04-21 2024-04-05 广东凯金新能源科技股份有限公司 硅碳复合材料、硅碳复合材料的制备方法及二次电池
CN118039850A (zh) * 2023-04-21 2024-05-14 广东凯金新能源科技股份有限公司 硅碳复合材料的制备方法、硅碳复合材料及二次电池

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013204799A1 (de) * 2013-03-19 2014-09-25 Wacker Chemie Ag Si/C-Komposite als Anodenmaterialien für Lithium-Ionen-Batterien
CN103474667B (zh) * 2013-08-16 2015-08-26 深圳市贝特瑞新能源材料股份有限公司 一种锂离子电池用硅碳复合负极材料及其制备方法
JP6239326B2 (ja) * 2013-09-20 2017-11-29 株式会社東芝 非水電解質二次電池用負極材料、非水電解質二次電池用負極、非水電解質二次電池及び電池パック
CN103855364B (zh) * 2014-03-12 2017-06-06 深圳市贝特瑞新能源材料股份有限公司 一种SiOx基复合材料、制备方法及锂离子电池
CN104577084A (zh) * 2015-01-20 2015-04-29 深圳市贝特瑞新能源材料股份有限公司 一种锂离子电池用纳米硅复合负极材料、制备方法及锂离子电池
CN106159229B (zh) * 2016-07-28 2020-01-24 深圳市贝特瑞新能源材料股份有限公司 硅基复合材料、制备方法及包含该复合材料的锂离子电池
CN106129411B (zh) * 2016-09-19 2020-01-24 深圳市贝特瑞新能源材料股份有限公司 一种空心硅基复合材料、制备方法及包含该复合材料的锂离子电池
CN109449423A (zh) * 2018-11-13 2019-03-08 东莞市凯金新能源科技股份有限公司 一种中空/多孔结构硅基复合材料及其制法
CN109755517A (zh) * 2018-12-29 2019-05-14 陕西煤业化工技术研究院有限责任公司 一种锂离子电池用硅碳复合负极材料及其制备方法
CN109802120A (zh) * 2019-01-24 2019-05-24 广东凯金新能源科技股份有限公司 一种硅碳复合材料及其制法
CN111063875A (zh) * 2019-12-25 2020-04-24 广东凯金新能源科技股份有限公司 一种海绵状多孔结构硅基复合材料及其制备方法
CN112563503A (zh) * 2020-12-07 2021-03-26 广东凯金新能源科技股份有限公司 一种自填充包覆硅基复合材料、其制备方法及其应用

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022121281A1 (zh) * 2020-12-07 2022-06-16 广东凯金新能源科技股份有限公司 一种自填充包覆硅基复合材料、其制备方法及其应用
CN117174857A (zh) * 2023-08-29 2023-12-05 广东凯金新能源科技股份有限公司 硅基复合材料及其制备方法

Also Published As

Publication number Publication date
JP7357699B2 (ja) 2023-10-06
US20220181608A1 (en) 2022-06-09
WO2022121281A1 (zh) 2022-06-16
CN113193201A (zh) 2021-07-30
JP2023509253A (ja) 2023-03-08
DE102021005842A1 (de) 2022-06-09
KR20220083974A (ko) 2022-06-21

Similar Documents

Publication Publication Date Title
CN112563503A (zh) 一种自填充包覆硅基复合材料、其制备方法及其应用
US11063264B2 (en) Porous structure Si Cu composite electrode of lithium ion battery and preparation method thereof
CN108321438B (zh) 全石墨锂硫电池及其制备方法
CN110061190A (zh) 液态金属基自愈合锂电负极及制备方法和锂离子电池
CN111063875A (zh) 一种海绵状多孔结构硅基复合材料及其制备方法
CN112103469B (zh) 一种硅碳负极极片及其制备方法和锂离子电池
CN103346304A (zh) 一种用于锂二次电池负极的锡碳复合材料及其制备方法
CN112510185A (zh) 一种硅碳复合负极材料及其制作方法
CN101465416A (zh) 锂离子电池用高比容量复合电极极片
CN113903980A (zh) 锂离子电池
CN116799210A (zh) 复合补锂材料及制备方法、补锂涂层及制备方法和锂电池
CN111697217A (zh) 一种锂离子电池硅/石墨复合负极制备方法
CN112563501A (zh) 一种类石榴结构硅基复合材料、其制备方法及其应用
CN113285050A (zh) 一种Li-M-X基固态锂电池正极及其制备方法
CN110165154B (zh) 一种碳量子点表面修饰一维纳米SnO2镁-锂双盐电池正极材料及其制备方法及其应用
CN112271272A (zh) 一种表面有机修饰层保护的三维多孔锂负极及其制备方法和应用
CN111326714A (zh) 一种用作高比容量负极的复合电极制作方法
CN114914414A (zh) 一种锂离子电池硅/钛-铌氧化物复合负极材料的制备方法
CN118398827B (zh) 负极集流体及其制备方法和无负极钠金属电池
CN109950521A (zh) 激光超非稳态扩散制备锂离子电池锡-石墨复合电极的方法
CN115692612B (zh) 一种锡碳负极材料及其制备方法
CN113594440B (zh) 一种多级导电结构的锂离子电池负极材料及其制备方法
CN112830465B (zh) 一种改性latp材料的制备方法及其抑制锂枝晶生长的用途
CN117174848B (zh) 一种用于钾离子电池的石榴籽状纳米复合材料的制备方法及其应用
CN118099398B (zh) 具有三维多孔涂层的复合负极材料及其制备方法和应用

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication

Application publication date: 20210326

WW01 Invention patent application withdrawn after publication