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Nano-Micro Letters · 2022 ·Vol. 14 ·期 1 ·1-13 · IF 23.655

An Endotenon Sheath-Inspired Double-Network Binder Enables Superior Cycling Performance of Silicon Electrodes

Jiang Meifang,Mu Pengzhou,Zhang Huanrui,Dong Tiantian,Tang Ben,Qiu Huayu,Chen Zhou,Cui Guanglei

The double-network binder shows excellent adhesive and self-healing abilities, which help suppress electrode volume expansion and stabilize the electrode interface upon cycling. This binder induces a Li 3 N/LiF-rich solid electrolyte interface layer, which can suppress continuous electrolyte decomposition. Superior electrochemical performance can be achieved in Si/Li half cells and LiNi 0.8 Co 0.1 Mn 0.1 O 2 /Si full cells, even with a high loading of Si electrode.

CAS / MDL: 7727-54-0 9000-69-5

研究领域: 材料科学 · 电化学 · 能源存储

✓ 已验证产品关联 DOI PubMed 高影响因子

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ChemSusChem · 2024 · IF 7.5

Constructing the polymer molecules to regulate the electrode/electrolyte interface to enhance lithium-metal battery performance

Hui Chen,Yu-Xiang Xie,Long-Ji Dong,Hao Peng,Meng-Wei Lin,Miao-Lan Sun,Shi-Shi Liu,Jun-Bo Ma,Ling Huang,Shi-Gang Sun

Lithium-ion batteries, with high energy density and long cycle life, have become the battery of choice for most vehicles and portable electronic devices; however, energy density, safety and cycle life require further improvements. Single-functional group electrolyte additives are very limited in practical applications, a ternary polymer bifunctional electrolyte additive copolymer (acrylonitrile-butyl hexafluoro methacrylate- poly (ethylene glycol) methacrylate- methyl ether) (PMANHF) was synthesized by free radical polymerization of acrylonitrile, 2, 2, 3, 4, 4, 4-hexafluorobutyl methacrylate and poly (ethylene glycol) methyl ether methacrylate. A series of characterizations show that in Li metal anodes, the preferential reduction of PMANHF is conducive to the formation of a uniform and stable solid electrolyte interphase layer, and Li deposition is uniform and dense. At the NCM811 cathode, a film composed of LiF- and Li3N-rich is formed at the cathode-electrolyte interface, mitigating the side reaction at the interface. At 1.0 mA cm-2, the Li/Li cell can be stabilized for 1000 cycles. In addition, the Li/NCM811 cell can stabilize 200 cycles with a cathode capacity of 153.7 mAh g-1, with the capacity retention of 89.93%, at a negative/positive capacity ratio of 2.5. This study brings to light essential ideas for the fabrication of additives for lithium-metal batteries.

CAS / MDL: 107-13-1 68-12-2 36405-47-7 872-50-4

研究领域: 材料科学 · 电化学 · 电池技术

✓ 已验证产品关联 DOI PubMed 高影响因子

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An Endotenon Sheath-Inspired Double-Network Binder Enables Superior Cycling Performance of Silicon Electrodes

Constructing the polymer molecules to regulate the electrode/electrolyte interface to enhance lithium-metal battery performance