Consolidating the Vulnerable Interphase of Ni-Rich Layered Cathode by Multifunctional Water-Based Binder

Gan, Qingmeng1,2; Qin, Ning1,3; Guo, Hao4; Zhang, Fangchang1; Yuan, Huimin1; Luo, Wen1; Li, Zhiqiang1; Li, Yingzhi1; Lu, Li2; Xu, Zhenghe1; Wang, Liguang3; Lu, Jun3; Lu, Zhouguang1

2024-03-18

10.1021/acsenergylett.4c00307

ACS ENERGY LETTERS   影响因子和分区

2380-8195

Ni-rich layered oxides hold significant promise as cathodes for lithium-ion batteries. Nevertheless, the susceptibility of their interphase at deep state-of-charge (SoC) imposes substantial limitations on their practical viability. Herein, we propose a water-based composite binder of dextran sulfate sodium-co-poly(acrylic acid) lithium (DSS-co-PAA(Li)) to address this dilemma. Capitalizing on the robust coordination bond interaction between the sulfate acid groups of DSS chains and transition-metal (TM) ion on the surface lattice, this functionally designed binder not only augments the cohesiveness within the electrode architecture but also effectively suppresses the vigorous reaction involving the highly labile Ni4+ and lattice O at the interphase. This attenuation is achieved by mitigating the undesirable phase transition and widening the energy gap between the Ni 3d and O 2p band of NCM811. Consequently, the NCM811 cathode with DSS-co-PAA(Li) binder yields an enhanced initial Coulombic efficiency (ICE) of 93.3% and capacity retention of nearly 90% after 200 cycles.

SCI ; EI

英语

第一 ; 通讯

Natural Science Foundation of Shenzhen Municipality[JCYJ20220818100418040] ; Basic Research Project of the Science and Technology Innovation Commission of Shenzhen[ZDSYS20200421111401738] ; Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials["U22A20439","52272241"] ; National Natural Science Foundation of China[20200925154236004] ; Stable Support Plan Program of Shenzhen Natural Science Fund[LR24E020001] ; Zhejiang Provincial Natural Science Foundation of China[9229006] ; Donations for Research Projects RMGS[2023A151010035] ; Guangdong Basic and Applied Basic Research Foundation[no.223-CXCY-M118-01-01-01] ; Innovation Zone program of China[[2023]094]

Chemistry ; Electrochemistry ; Energy & Fuels ; Science & Technology - Other Topics ; Materials Science

Chemistry, Physical ; Electrochemistry ; Energy & Fuels ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:001187287700001

AMER CHEMICAL SOC

Web of Science

1.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen Key Lab Interfacial Sci & Engn Mat, Shenzhen 518055, Peoples R China
2.Natl Univ Singapore, Dept Mech Engn, Singapore 117575, Singapore
3.Zhejiang Univ, Coll Chem & Biol Engn, Hangzhou 310058, Peoples R China
4.State Key Lab Adv Chem Power Sources, Zunyi 563003, Guizhou, Peoples R China

Gan, Qingmeng,Qin, Ning,Guo, Hao,et al. Consolidating the Vulnerable Interphase of Ni-Rich Layered Cathode by Multifunctional Water-Based Binder[J]. ACS ENERGY LETTERS,2024,9(4).

Gan, Qingmeng.,Qin, Ning.,Guo, Hao.,Zhang, Fangchang.,Yuan, Huimin.,...&Lu, Zhouguang.(2024).Consolidating the Vulnerable Interphase of Ni-Rich Layered Cathode by Multifunctional Water-Based Binder.ACS ENERGY LETTERS,9(4).

Gan, Qingmeng,et al."Consolidating the Vulnerable Interphase of Ni-Rich Layered Cathode by Multifunctional Water-Based Binder".ACS ENERGY LETTERS 9.4(2024).