Extremely fast-charging lithium ion battery enabled by dual-gradient structure design

被引：142

作者：

Lu, Lei-Lei ^{[1
,2
]}

Lu, Yu-Yang ^{[3
]}

Zhu, Zheng-Xin ^{[1
,2
]}

Shao, Jia-Xin ^{[2
]}

Yao, Hong-Bin ^{[1
,2
]}

Wang, Shaogang ^{[4
]}

Zhang, Tian-Wen ^{[1
,2
]}

Ni, Yong ^{[3
]}

Wang, Xiu-Xia ^{[5
]}

Yu, Shu-Hong ^{[1
,2
,6
]}

机构：

[1] Univ Sci & Technol China, Div Nanomat & Chem, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China

[2] Univ Sci & Technol China, CAS Ctr Excellence Nanosci, Hefei Sci Ctr CAS, Dept Chem,Dept Appl Chem, Hefei 230026, Anhui, Peoples R China

[3] Univ Sci & Technol China, Dept Modern Mech, CAS Key Lab Mech Behav & Design Mat, Hefei 230026, Anhui, Peoples R China

[4] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China

[5] USTC Ctr Micro & Nanoscale Res & Fabricat, Shenzhen, Peoples R China

[6] Southern Univ Sci & Technol, Inst Innovat Mat, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China

来源：

SCIENCE ADVANCES | 2022年 / 8卷 / 17期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

POROUS GRAPHITE; ENERGY DENSITY; ELECTRODES; PERFORMANCE; DISCHARGE; POROSITY; TRANSPORT; MODELS;

D O I：

10.1126/sciadv.abm6624

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Extremely fast-charging lithium-ion batteries are highly desirable to shorten the recharging time for electric vehicles, but it is hampered by the poor rate capability of graphite anodes. Here, we present a previously unreported particle size and electrode porosity dual-gradient structure design in the graphite anode for achieving extremely fast-charging lithium ion battery under strict electrode conditions. We develop a polymer binder-free slurry route to construct this previously unreported type particle size-porosity dual-gradient structure in the practical graphite anode showing the extremely fast-charging capability with 60% of recharge in 10 min. On the basis of dual-gradient graphite anode, we demonstrate extremely fast-charging lithium ion battery realizing 60% recharge in 6 min and high volumetric energy density of 701 Wh liter(-1) at the high charging rate of 6 C.

引用

页数：8

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