This study proposes a new design of composite current collector that simultaneously increase the energy density and safety of lithium-ion battery. The design includes a polyethylene-terephthalate base coated with multi-layer aluminum (what is called the PET-Al ML CC), rather than coated with single layer aluminum like the traditional method.
Lithium-ion batteries with composite copper current collectors will exhibit high energy density, good safety, excellent cycling performance and wide compatibility. The physical and chemical properties, the advantages of composite copper foil, and the preparation methods of composite copper foil were reviewed.
Self-breaking design of composite current collector helps improve battery safety. Self-breaking is fulfilled by introducing oxygen when evaporating aluminum layer. Extra oxygen forms multilayer structure containing Al oxide on the polymer core. Short circuit path is spontaneously cut-off by the multilayer structure.
The results well demonstrate that the proposed PET-Al current collector can slow down the temperature rise of the entire battery during the nail penetration, and effectively achieve the aim of improving the reliability performances of LIBs.
Advanced composite current collector materials have risen by the combination of surface modification and geometric design. For conventional LIBs and ASSLBs, the collector selection principles vary (Figure 8), while the exploration of current collectors in LIBs gives birth to advanced current collectors in ASSLBs.
Increasing energy density Composite copper foil with a sandwich structure can significantly reduce the weight of the current collector, thereby enlarging the energy density of the battery. In addition, the rough surface of composite copper foil can enhance the bonding strength between current collector and active material.
Composite copper foil current collectors with sandwich structure …
Lithium-ion batteries with composite copper current collectors will exhibit high energy density, good safety, excellent cycling performance and wide compatibility. The …
Learn More
Flexible CNT/S-GO composite film without current collector for …
Lithium-sulfur batteries are well-known for their higher theoretical energy density, low cost, and environmental friendliness, making them an ideal next-generation energy battery to replace conventional lithium batteries. Here we introduce an easy-to-form composite flexible film of CNT/S-GO with no current collector. The composite film is fabricated by a …
Learn More
Composite copper foil current collectors with sandwich structure …
The results not only open a new avenue to improve the energy and power densities of anode‐free batteries via composite current collector innovation but, in a broader context, provide a new ...
Learn More
Ultrafast growth of sulfurized 3D composite host for high−energy ...
Lithium-ion batteries (LIBs) have been in development for decades since their first commercialization in 1991 [1].However, the rapid adoption of massive electric vehicles and portable devices in recent years has led to an increasing demand for batteries of higher energy density [2] nventional LIBs, which consist of graphite (372 mAh g −1) as anode and layered …
Learn More
(PDF) Lightweight Polymer-Carbon Composite …
batteries Article Lightweight Polymer-Carbon Composite Current Collector for Lithium-Ion Batteries Marco Fritsch 1, *, Matthias Coeler 1, Karina Kunz 2, Beate Krause 2, Peter Marcinkowski 1, Petra Pötschke 2, Mareike Wolter 1 and …
Learn More
An Ultralight Composite Current Collector Enabling High-Energy …
However, the copper (Cu) current collector accounts for more than 25 wt% of the total weight of the anode-free battery without capacity contribution, which severely reduces the energy and power densities. Here, a new family of ultralight composite current collectors with a low areal density of 0.78 mg cm−2, representing significant weight ...
Learn More
Enpack Commences Construction on China''s First Plant …
Composite current collector is a new kind of battery material that is made by sandwiching a PET film between two very thin copper or aluminum layers. This is done through a vacuum deposition process. Hence, the term …
Learn More
Stretchable Separator/Current Collector Composite for Superior Battery …
μm Al current collectors, the as-designed separator/current collector (SCC) composite shows competing mechanical and electrical properties, while reducing 70.4% weight,
Learn More
High-performance CuO/Cu composite current collectors with array-pattern ...
This copper plate is made into a CuO/Cu composite current collector with array-pattern porous structures for lithium-ion batteries. Using mesocarbon microbead graphite powders as the anode material, this new composite current collector is assembled into CR2032 coin half-cells for electrochemical tests.
Learn More
-
-（metallized plastic current collector,MPCC）、,、、,。 …
Learn More
From Checkerboard‐Like Sand Barriers to 3D Cu@CNF Composite Current ...
Generally, after the first cycle, the D Li + for the battery with a common current collector will decrease with the increase in cycle number (see Figure 5f). However, as shown in Figure 5e, the value of D Li + for the battery with the new current collector decreases first and then increases with the augment of cycle number. This phenomenon ...
Learn More
Lightweight 3D‐net Copper‐Plated Polyimide Current Collector …
In this work, 3D-net copper-plated polyimide current collector was prepared through electroless plating method and obtained a structure of PI core and Cu shell. This novel current collector possesses a lightweight areal density. Three different Cu loading copper-coated PI CC samples was prepared and compared. The lithium-ion batteries assembled ...
Learn More
Constructing porous nanosphere structure current collector by …
In this study, we have prepared composite current collector with porous nanospheres structure (Cu 3 N-NS/Cu) through a brand-new nitriding method. Because Cu 3 N-modified layer of Cu current collector improves the affinity of the electrode and lithium, the composite collector shows a better cyclic reversibility and flat lithium deposition morphology.
Learn More
[PDF] Lightweight Polymer-Carbon Composite Current Collector …
DOI: 10.3390/batteries6040060 Corpus ID: 230533648; Lightweight Polymer-Carbon Composite Current Collector for Lithium-Ion Batteries @article{Fritsch2020LightweightPC, title={Lightweight Polymer-Carbon Composite Current Collector for Lithium-Ion Batteries}, author={Marco Fritsch and Matthias Coeler and Karina Kunz and Beate Krause and Peter …
Learn More
Composite Graphene‐Modified Aluminum Foil Cathode Current Collectors ...
The lithium-ion battery employing GM-AGD-Al-CCs as cathode current collectors exhibits reversible specific capacities of 155, 118, and 92.5 mAh/g at current densities of 0.1, 5, and 10 C. After cycling for 1800 cycles at 5 and 10 C, its specific capacities remain at 91 and 77.5 mAh/g. Combing contact angle measurement, electrical conductivity test with electrochemical …
Learn More
Polyethylene terephthalate-based cathode current collectors …
In the present study, we propose a light-weight composite Al/PET/Al current collector, denoted as PET-Al, which is prepared by depositing a thinner aluminum coating on …
Learn More
The Optimization of a Carbon Paper/MnO2 Composite Current Collector …
The Optimization of a Carbon Paper/MnO 2 Composite Current . Collector for Manufacturing a High-Performance Li – S . Battery Cathode . Zhiyuan Pang 1, Linglong Kong 2, *, Hongzhou Zhang 1 ...
Learn More
Composite copper foil current collectors with sandwich structure …
It is a feasible method to enlarge the energy density of the battery by reducing the thickness of the current collector. The limited literature shows that the thicknesses of copper foil and aluminum foil as anode and cathode current collector have been reduced from 20 μm and 18 μm at early stage to 6 μm and 10 μm at current stage, respectively.
Learn More
Stretchable separator/current collector composite for superior battery …
Stretchable separator/current collector composite for superior battery safety†. Zhikang Liu‡ a, Yanhao Dong‡ b, Xiaoqun Qi c, Ru Wang ade, Zhenglu Zhu a, Chao Yan de, Xinpeng Jiao e, Sipei Li b, Long Qie * c, Ju Li * bf and Yunhui Huang * c a Institute of New Energy for Vehicles, School of Materials Science and Engineering, Tongji University, Shanghai 201804, China b …
Learn More
Polyethylene terephthalate-based cathode current collectors …
In addition to the development of novel core materials, the energy density of LIBs can be also improved through a reduction in the weight of various battery components such as using the porous metal current collectors or decreasing the thickness of commercial metal current collectors in engineering [7], [8], [9].For instance, the thicknesses of the current …
Learn More
Stretchable separator/current collector composite for superior …
Safety is the most concerning issue for high-energy-density batteries. Here we show how mechanical abuse-induced short-circuiting can be mitigated by designing a structure of highly …
Learn More
Pulsed Current Constructs 3DM Cu/ZnO Current Collector Composite …
In this paper, a lithiophilic 3D copper mesh current collector is designed by using lithiophilic ZnO and pulsed current plating and is applied to a lithium metal battery composite anode. Under the action of the pulsed current field, the novel lithium metal composite anode battery achieved the homogeneous deposition of lithium ions. The lithium-to-copper half cells …
Learn More
Lighter and safer
Current collectors are essential components in lithium-ion batteries, but are typically made of metal foils that do not contribute to the battery capacity. Now, a fire-extinguishing lightweight ...
Learn More
From Checkerboard‐Like Sand Barriers to 3D Cu@CNF Composite Current ...
Generally, after the first cycle, the D Li + for the battery with a common current collector will decrease with the increase in cycle number (see Figure Figure5f). 5 f). However, as shown in Figure Figure5e, 5 e, the value of D Li + for the battery with the new current collector decreases first and then increases with the augment of cycle ...
Learn More
Preparation and properties of PI@Cu composite films current collectors ...
Lithium-ion batteries are widely used in the energy storage industry due to their excellent balance of energy density, rate capability, cycle life, and cost [1, 2].However, the rapid advancement of portable electronic devices and electric vehicles has led to an increased demand for enhanced battery performance, especially in terms of energy density, cycle life and rate …
Learn More
Ultralight and fire-extinguishing current collectors for …
Compared to lithium-ion batteries assembled with the thinnest commercial metal foil current collectors (~6 µm), batteries equipped with our composite current collectors can realize a...
Learn More
Composite Graphene‐Modified Aluminum Foil …
We have introduced a composite graphene conductive coating for lithium-ion battery cathode collector-aluminum foils, which consists of an aqueous graphene paste and a graphene microchip (GM) additive, which …
Learn More
A review of current collectors for lithium-ion batteries
A typical LIB is composed of a cathode, an anode, a separator, electrolyte and two current collectors, as shown in Fig. 1 a. Commonly used cathodes include LiCoO 2 (LCO), LiMn 2 O 4 (LMO), LiFePO 4 (LFP), and LiNiMnCoO 2 (NMC) and the anode mainly used is graphite [7, 8], which more recently contains additional active components such as SiO x to …
Learn More
：、 …
（PASC）,Cu,、。 1. . …
Learn More
An Ultralight Composite Current Collector Enabling High-Energy …
Here, we show a new family of ultralight composite current collectors with a low areal density of 0.78 mg cm-2, representing significant weight reduction of 49%-91% compared with the Cu-based current collectors for high-energy Li batteries. Rational molecular engineering of the polyacylsemicarbazide substrate enables enhanced interfacial ...
Learn More
Research Progress on Copper-Based Current Collector for …
Lithium metal batteries (LMBs) using lithium metal as the anode show great potential in improving energy density and power density than conventional lithium-ion batteries (LIBs). In addition to the common Li-containing cathode materials in LIBs that can be used in LMBs, some Li-free materials (S, O2, etc.) have also been developed and applied to cathodes …
Learn More
From Checkerboard‐Like Sand Barriers to 3D Cu@CNF …
Here the findings in design and fabrication of a 3D checkerboard-like Cu@CNF composite current collector for lithium-ion batteries are reported. The surface of the current collector is modified with patterned …
Learn More
Lightweight Polymer-Carbon Composite Current …
A hermetic dense polymer-carbon composite-based current collector foil (PCCF) for lithium-ion battery applications was developed and evaluated in comparison to state ...
Learn More
Composite LFP cathode/current collector microfiber-meshes …
Composite LFP cathode/current collector microfiber-meshes with bi- and interlayered architectures for Li-ion battery Edi Mados,a Inbar Atar,a Olga Kondrova,a Diana Golodnitsky,*a Amit Sitt.*a a.School of Chemistry, Faculty of Exact Sciences and the Center for Nanoscience and Nanotechnology, Tel Aviv University, Tel Aviv, 69978, Israel.
Learn More
