Ultrathin and High-Modulus LiBO2 Layer Highly Elevates the Interfacial Dynamics and Stability of Lithium Anode under Wide Temperature Range

Li，Song1,2; Wang，Xian Shu1; Han，Bing3; Lai，Chen4; Shi，Pei Ran1; Ma，Jia Bin1,2; Wang，Shu Wei1,2; Zhang，Li Han1,2; Liu，Qi1; Deng，Yong Hong3; He，Yan Bing1; Yang，Quan Hong5

2021

10.1002/smll.202106427

Small   影响因子和分区

1613-6810

1613-6829

Lithium (Li) metal batteries (LMBs) face huge challenges to achieve long cycling life at wide temperature range owing to the severe dendrite growth at subambient temperature and the intense side reactions with electrolyte at high temperature. Herein, an ultrathin LiBO layer with an extremely high Young's modulus of 8.0 GPa is constructed on Li anode via an in situ reaction between Li metal and 4,4,5,5-tetramethyl-1,3,2-dioxa-borolane (TDB) to form LiBO@Li anode, which presents two times higher exchange current density than pristine Li anode. The LiBO layer presents a strong absorption to Li ions and greatly improves the interfacial dynamics of Li-ion migration, which induces homogenous lithium nucleation and deposition to form a dense lithium layer. Consequently, the Li dendrite growth during cycling at subambient temperature and the side reactions with electrolyte at high temperature are simultaneously suppressed. The LiBO@Li/LiNiCoMnO (NCM811) full batteries with limited Li capacity and high cathode mass loading of 9.9 mg cm can steadily cycle for 300 cycles with a capacity retention of 86.6%. The LiBO@Li/NCM811 full batteries and LiBO@Li/LiBO@Li symmetric batteries also present excellent cycling performance at both −20 and 60 °C. This work develops a strategy to achieve outstanding performance of LMBs at wide working temperature-range.

interfacial dynamics LiBO 2 layer lithium metal batteries wide temperature range

SCI ; EI

英语

其他

WOS:000728355700001

20215011312047

Anodes ; Dynamics ; Elastic moduli ; Electrolytes ; Lithium ; Lithium-ion batteries

Lithium and Alloys:542.4 ; Alkali Metals:549.1 ; Electric Batteries and Fuel Cells:702 ; Electron Tubes:714.1 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Materials Science:951

2-s2.0-85120820913

Scopus

1.Shenzhen Geim Graphene Center,Tsinghua Shenzhen International Graduate School,Shenzhen,518055,China
2.Laboratory of Advanced Materials,School of Materials Science and Engineering,Tsinghua University,Beijing,100084,China
3.Department of Materials Science and Engineering,Southern University of Science and Technology of China,Shenzhen,518055,China
4.Key Lab of Advanced Functional Materials,Ministry of Education,Faculty of Materials and Manufacturing,Beijing University of Technology,Beijing,100084,China
5.Nanoyang Group,State Key Laboratory of Chemical Engineering,School of Chemical Engineering and Technology,Tianjin University,Tianjin,300350,China

Li，Song,Wang，Xian Shu,Han，Bing,et al. Ultrathin and High-Modulus LiBO2 Layer Highly Elevates the Interfacial Dynamics and Stability of Lithium Anode under Wide Temperature Range[J]. Small,2021,18.

Li，Song.,Wang，Xian Shu.,Han，Bing.,Lai，Chen.,Shi，Pei Ran.,...&Yang，Quan Hong.(2021).Ultrathin and High-Modulus LiBO2 Layer Highly Elevates the Interfacial Dynamics and Stability of Lithium Anode under Wide Temperature Range.Small,18.

Li，Song,et al."Ultrathin and High-Modulus LiBO2 Layer Highly Elevates the Interfacial Dynamics and Stability of Lithium Anode under Wide Temperature Range".Small 18(2021).