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用于高性能钠存储的硫化铜的耐粉碎性和容量恢复

Pulverization-Tolerance and Capacity Recovery of Copper Sulfide for High-Performance Sodium Storage.

作者信息

Park Jae Yeol, Kim Sung Joo, Yim Kanghoon, Dae Kyun Seong, Lee Yonghee, Dao Khoi Phuong, Park Ji Su, Jeong Han Beom, Chang Joon Ha, Seo Hyeon Kook, Ahn Chi Won, Yuk Jong Min

机构信息

Department of Materials Science & Engineering Korea Advanced Institute of Science and Technology (KAIST) 291 Daehak-ro Yuseong-gu Daejeon 34141 Republic of Korea.

Platform Technology Laboratory Korea Institute of Energy Research Daejeon 152 Gajeong-ro Yuseong-gu 34129 Republic of Korea.

出版信息

Adv Sci (Weinh). 2019 Apr 26;6(12):1900264. doi: 10.1002/advs.201900264. eCollection 2019 Jun 19.

DOI:10.1002/advs.201900264
PMID:31380167
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6662052/
Abstract

Finding suitable electrode materials is one of the challenges for the commercialization of a sodium ion battery due to its pulverization accompanied by high volume expansion upon sodiation. Here, copper sulfide is suggested as a superior electrode material with high capacity, high rate, and long-term cyclability owing to its unique conversion reaction mechanism that is pulverization-tolerant and thus induces the capacity recovery. Such a desirable consequence comes from the combined effect among formation of stable grain boundaries, semi-coherent boundaries, and solid-electrolyte interphase layers. The characteristics enable high cyclic stability of a copper sulfide electrode without any need of size and morphological optimization. This work provides a key finding on high-performance conversion reaction based electrode materials for sodium ion batteries.

摘要

由于在 sodiation 过程中伴随着高体积膨胀而发生粉化,寻找合适的电极材料是钠离子电池商业化面临的挑战之一。在此,硫化铜被认为是一种具有高容量、高倍率和长期循环稳定性的优异电极材料,这归因于其独特的转化反应机制,该机制具有耐粉化性,从而能够实现容量恢复。这种理想的结果源于稳定晶界、半共格界面和固体电解质界面层形成之间的综合作用。这些特性使得硫化铜电极具有高循环稳定性,而无需进行任何尺寸和形态优化。这项工作为钠离子电池基于高性能转化反应的电极材料提供了一个关键发现。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d222/6662052/1adeb3fc137d/ADVS-6-1900264-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d222/6662052/7e59a60d9f4f/ADVS-6-1900264-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d222/6662052/9208c233dcee/ADVS-6-1900264-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d222/6662052/21e713b6e5c5/ADVS-6-1900264-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d222/6662052/83a1839b8187/ADVS-6-1900264-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d222/6662052/1adeb3fc137d/ADVS-6-1900264-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d222/6662052/7e59a60d9f4f/ADVS-6-1900264-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d222/6662052/9208c233dcee/ADVS-6-1900264-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d222/6662052/21e713b6e5c5/ADVS-6-1900264-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d222/6662052/83a1839b8187/ADVS-6-1900264-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d222/6662052/1adeb3fc137d/ADVS-6-1900264-g005.jpg

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Unusual Na Ion Intercalation/Deintercalation in Metal-Rich CuS for Na-Ion Batteries.富金属 CuS 中钠离子的反常嵌入/脱嵌用于钠离子电池
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Atomic visualization of a non-equilibrium sodiation pathway in copper sulfide.
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