Roll-To-Roll Fabrication of Zero-Volume-Expansion Lithium-Composite Anodes to Realize High-Energy-Density Flexible and Stable Lithium-Metal Batteries

Luo, Chao1; Hu, Hong2; Zhang, Tian1,3; Wen, Shujing1; Wang, Ruo1; An, Yanan4; Chi, Shang-Sen1; Wang, Jun1; Wang, Chaoyang4; Chang, Jian1; Zheng, Zijian2,5,6; Deng, Yonghong1

2022-08-01

10.1002/adma.202205677

ADVANCED MATERIALS   影响因子和分区

0935-9648

1521-4095

The lithium (Li)-metal anode offers a promising solution for high-energy-density lithium-metal batteries (LMBs). However, the significant volume expansion of the Li metal during charging results in poor cycling stability as a result of the dendritic deposition and broken solid electrolyte interphase. Herein, a facile one-step roll-to-roll fabrication of a zero-volume-expansion Li-metal-composite anode (zeroVE-Li) is proposed to realize high-energy-density LMBs with outstanding electrochemical and mechanical stability. The zeroVE-Li possesses a sandwich-like trilayer structure, which consists of an upper electron-insulating layer and a bottom lithiophilic layer that synergistically guides the Li deposition from the bottom up, and a middle porous layer that eliminates volume expansion. This sandwich structure eliminates dendrite formation, prevents volume change during cycling, and provides outstanding flexibility to the Li-metal anode even at a practical areal capacity over 3.0 mAh cm(-2). Pairing zeroVE-Li with a commercial NMC811 or LCO cathode, flexible LMBs that offer a record-breaking figure of merit (FOM, 45.6), large whole-cell energy density (375 Wh L-1, based on the volume of the anode, separator, cathode, and package), high-capacity retention (> 99.8% per cycle), and remarkable mechanical robustness under practical conditions are demonstrated.

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The lithium (Li)-metal anode offers a promising solution for high-energy-density lithium-metal batteries (LMBs). However, the significant volume expansion of the Li metal during charging results in poor cycling stability as a result of the dendritic deposition and broken solid electrolyte interphase. Herein, a facile one-step roll-to-roll fabrication of a zero-volume-expansion Li-metal-composite anode (zeroVE-Li) is proposed to realize high-energy-density LMBs with outstanding electrochemical and mechanical stability. The zeroVE-Li possesses a sandwich-like trilayer structure, which consists of an upper electron-insulating layer and a bottom lithiophilic layer that synergistically guides the Li deposition from the bottom up, and a middle porous layer that eliminates volume expansion. This sandwich structure eliminates dendrite formation, prevents volume change during cycling, and provides outstanding flexibility to the Li-metal anode even at a practical areal capacity over 3.0 mAh cm(-2). Pairing zeroVE-Li with a commercial NMC811 or LCO cathode, flexible LMBs that offer a record-breaking figure of merit (FOM, 45.6), large whole-cell energy density (375 Wh L-1, based on the volume of the anode, separator, cathode, and package), high-capacity retention (> 99.8% per cycle), and remarkable mechanical robustness under practical conditions are demonstrated.

Composite Electrodes Dendrite Deposition Flexible Batteries Lithium Metal Volume Expansion

SCI ; EI

英语

NI论文

第一 ; 通讯

Key-Area Research and Development Program of Guangdong Province[

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000842814000001

WILEY-V C H VERLAG GMBH

20223512631838

Anodes ; Cathodes ; Expansion ; Fabrication ; Lithium ; Lithium Batteries ; Mechanical Stability ; Solid Electrolytes

Lithium And Alloys:542.4 ; Alkali Metals:549.1 ; Primary Batteries:702.1.1 ; Electron Tubes:714.1 ; Chemical Operations:802.3 ; Chemical Agents And Basic Industrial Chemicals:803 ; Materials Science:951

MATERIALS SCIENCE

Web of Science

1.Southern Univ Sci & Technol, Acad Adv Interdisciplinary Studies, Dept Mat Sci & Engn, Shenzhen Key Lab Solid State Batteries, Shenzhen 518055, Peoples R China
2.Hong Kong Polytech Univ, Inst Text & Clothing, Kowloon, Hong Kong, Peoples R China
3.City Univ Hong Kong, Dept Mat Sci & Engn, 83 Tat Chee Ave, Hong Kong, Peoples R China
4.South China Univ Technol, Res Inst Mat Sci, Guangzhou 510640, Peoples R China
5.Hong Kong Polytech Univ, Res Inst Smart Energy, Res Inst Intelligent Wearable Syst, Hong Kong, Peoples R China
6.Hong Kong Polytech Univ, Dept Appl Biol & Chem Technol, Kowloon, Hong Kong, Peoples R China

Luo, Chao,Hu, Hong,Zhang, Tian,et al. Roll-To-Roll Fabrication of Zero-Volume-Expansion Lithium-Composite Anodes to Realize High-Energy-Density Flexible and Stable Lithium-Metal Batteries[J]. ADVANCED MATERIALS,2022.

Luo, Chao.,Hu, Hong.,Zhang, Tian.,Wen, Shujing.,Wang, Ruo.,...&Deng, Yonghong.(2022).Roll-To-Roll Fabrication of Zero-Volume-Expansion Lithium-Composite Anodes to Realize High-Energy-Density Flexible and Stable Lithium-Metal Batteries.ADVANCED MATERIALS.

Luo, Chao,et al."Roll-To-Roll Fabrication of Zero-Volume-Expansion Lithium-Composite Anodes to Realize High-Energy-Density Flexible and Stable Lithium-Metal Batteries".ADVANCED MATERIALS (2022).