Surface coordination layer passivates oxidation of copper

Peng, Jian; Chen, Bili; Wang, Zhi‐Chang; Guo, Jing; Wu, Binghui; Hao, Shuqiang; Zhang, Qinghua; Gu, Lin; Zhou, Qin; Liu, Zhi; Hong, Shuqin; You, Sifan; Fu, Ang; Shi, Zaifa; Xie, Hao; Cao, Duanyun; Lin, Changjian; Fu, Gang; Zheng, Lan‐Sun; Jiang, Ying; Zheng, Nanfeng

doi:10.1038/s41586-020-2783-x

Cited by 185 publications

(176 citation statements)

References 75 publications

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“…[20,21] Besides, carbonyl oxygen atoms in the polyimide chain are electron-donating sites, forming stable bonds with electron-accepting sites at the Zn surface upon an annealing process. [22,23] Taking into account these two benefits, polyimide is coated onto the Zn surface. A prepolymerized precursor poly(amic acid) solution made of 4,4′-methylenedianiline, 3,3′,4,4′-benzophenonetetracarboxylic dianhydride, 2-(dimethylamino)ethyl methacrylate, and 5% w/w of photoinitiator (2-benzyl-2-dimethylamino-1-(4morpholinophenyl)-butanone-1) is spin-coated and crosslinked under ultraviolet (UV) light ( Figure S2, Supporting Information).…”

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confidence: 99%

A Patternable and In Situ Formed Polymeric Zinc Blanket for a Reversible Zinc Anode in a Skin‐Mountable Microbattery

et al. 2021

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Advances in the miniaturization of electronic devices have allowed the rapid development of wearable technologies and envisioned seamless and user-friendly smart systems with Owing to their high safety and reversibility, aqueous microbatteries using zinc anodes and an acid electrolyte have emerged as promising candidates for wearable electronics. However, a critical limitation that prevents implementing zinc chemistry at the microscale lies in its spontaneous corrosion in an acidic electrolyte that causes a capacity loss of 40% after a ten-hour rest. Widespread anti-corrosion techniques, such as polymer coating, often retard the kinetics of zinc plating/stripping and lack spatial control at the microscale. Here, a polyimide coating that resolves this dilemma is reported. The coating prevents corrosion and hence reduces the capacity loss of a standby microbattery to 10%. The coordination of carbonyl oxygen in the polyimide with zinc ions builds up over cycling, creating a zinc blanket that minimizes the concentration gradient through the electrode/electrolyte interface and thus allows for fast kinetics and low plating/stripping overpotential. The polyimide's patternable feature energizes microbatteries in both aqueous and hydrogel electrolytes, delivering a supercapacitor-level rate performance and 400 stable cycles in the hydrogel electrolyte. Moreover, the microbattery is able to be attached to human skin and offers strong resistance to deformations, splashing, and external shock. The skin-mountable microbattery demonstrates an excellent combination of anti-corrosion, reversibility, and durability in wearables. The ORCID identification number(s) for the author(s) of this article can be found under

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confidence: 99%

A Patternable and In Situ Formed Polymeric Zinc Blanket for a Reversible Zinc Anode in a Skin‐Mountable Microbattery

et al. 2021

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“…The reconstruction of Cu surface can be readily achieved using an SF treatment method recently developed by our group. [ 42 ] Simply by treating the Cu(111) dominated commercial Cu foil with an SF solution (for details see the Experimental Section), the surface of Cu foil can be reconstructed into Cu(110) dominated surface. This method is applicable to a wide variety of Cu materials (vide infra).…”

Section: Resultsmentioning

confidence: 99%

“…This method is applicable to a wide variety of Cu materials (vide infra). [ 42 ] Upon the treatment no obvious color difference is observed between the commercial Cu foil and SF‐Cu foil (Figure 1b), however the atomic steps observed with atomic‐resolution scanning tunneling microscopy (STM) (Figure 1c, the step height of 2.55 Å is corresponding to the diatomic step height of Cu(110)), and the Cu(110) interplanar distance measured from high‐resolution transmission electron microscope (HRTEM) image (Figure S1, Supporting Information) both indicate that the surface of SF‐treated Cu foil (SF‐Cu foil) is dominated by Cu(110). The results are consistent with the obviously increased Cu(220) diffraction peak appeared in the glancing angle X‐ray diffraction (XRD) pattern of SF‐Cu foil (Figure 1d).…”

Section: Resultsmentioning

confidence: 99%

“…Our recent work demonstrated that the Cu(110) surface of SF‐Cu foil is stabilized by a well‐ordered molecular layer composed of [Cu 2 (HCOO) 2 (OH) 4 ] dimers and OH − groups, as illustrated in Figure 1e. [ 42 ] This covering layer has almost no side‐effects on the electrical conductivity of Cu foils, [ 42 ] but can improve their lithiophilicity (insets of Figure 1f,g).…”

Section: Resultsmentioning

confidence: 99%

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Lithiophilic and Antioxidative Copper Current Collectors for Highly Stable Lithium Metal Batteries

Wang

Peng

et al. 2021

Adv Funct Materials

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Designing copper (Cu) current collectors is a convenient way to stabilize lithium (Li) metal anodes. However, Cu current collectors and their derived Li/Cu anodes still face several obstacles, including lithiophobic and oxidizable Cu surface, cumbersome anode fabrication process, and low Li utilization. Here, a formate‐treatment strategy is presented to reconstruct Cu current collectors with a passivation layer covered Cu(110) surface. This method can easily be generalized to increase the lithiophilicity and oxidation resistibility of Cu current collectors. Using the formate‐treated Cu nanowire network as an anode current collector, the full cell consisting of a LiFePO4 cathode and Li/Cu anode with a low negative/positive capacity ratio delivers an excellent cycling performance with 74.8% capacity retention after 1000 cycles at 1 C. In addition, a concept of an upper current collector is introduced to simplify the manufacturing procedure of Li/Cu anodes. This work provides new insights into the design and construction of high‐performance Li/Cu anodes.

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“…and the property of the catalyst, together with insight on the reaction mechanism at the surface/interface of catalysts. Furthermore, density functional theory (DFT) calculations should also be fully considered to investigate the reaction mechanism on noble‐metal‐based catalysts, [ 268,271,283,284 ] thereby clarifying the structure–activity relationship and reasonably simplifying the design of the ideal catalysts. Nevertheless, there remains much to learn about these systems using, for example, in situ characterization, precise control, mass production, mechanism exploration, and functional application of noble‐metal composites.…”

Section: Resultsmentioning

confidence: 99%

Rational Component and Structure Design of Noble‐Metal Composites for Optical and Catalytic Applications

Zeng

Zhao

et al. 2021

Small Structures

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Great effort has recently been made to develop noble‐metal nanomaterials with good activity, high durability, and appropriate selectivity to improve their efficiency in functional applications, while maintaining low cost. The use of noble metals not only makes the last requirement hard to meet but also restricts stability at high temperatures and limits mass production. Recently, some promising strategies, such as optimizing the components and fine‐tuning the structure, have been explored, which promise to enable the fabrication of unique noble‐metal nanostructures with lower loading and higher stability. Herein, recent achievements in manufacturing noble‐metal composites are reviewed, particularly focusing on unique and key factors in rational design and control of structure and components. Two applications of noble‐metal composites in optical and catalytic applications are focused on to illustrate their rational synthesis and design. In addition, current challenges and prospects for future development in this rapidly blossoming field are discussed.

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Surface coordination layer passivates oxidation of copper

Cited by 185 publications

References 75 publications

A Patternable and In Situ Formed Polymeric Zinc Blanket for a Reversible Zinc Anode in a Skin‐Mountable Microbattery

A Patternable and In Situ Formed Polymeric Zinc Blanket for a Reversible Zinc Anode in a Skin‐Mountable Microbattery

Lithiophilic and Antioxidative Copper Current Collectors for Highly Stable Lithium Metal Batteries

Rational Component and Structure Design of Noble‐Metal Composites for Optical and Catalytic Applications

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