气候变化领域集成服务门户(CCPortal): Engineering the interface between LiCoO2and Li10GeP2S12solid electrolytes with an ultrathin Li2CoTi3O8interlayer to boost the performance of all-solid-state batteries

CCPortal

DOI	10.1039/d0ee03212c
	Engineering the interface between LiCoO2and Li10GeP2S12solid electrolytes with an ultrathin Li2CoTi3O8interlayer to boost the performance of all-solid-state batteries
	Wang C.-W.; Ren F.-C.; Zhou Y.; Yan P.-F.; Zhou X.-D.; Zhang S.-J.; Liu W.; Zhang W.-D.; Zou M.-H.; Zeng L.-Y.; Yao X.-Y.; Huang L.; Li J.-T.; Sun S.-G.
发表日期	2021
ISSN	17545692
起始页码	437
结束页码	450
卷号	14 期号:1
英文摘要	Sulfide-based all-solid-state lithium-ion batteries (ASSLIBs) are promising candidates in the next generation of energy storage technology; the voltage mismatch and the resulting side reactions at the interface between the cathode and the solid electrolyte, however, dramatically deteriorate their cycling performance. Herein, for the first time, we report that the chemical interaction between LiCoO2 (LCO) and TiO2 can be regulated by two additives, carbon and Li2CO3, which in situ form a continuous ultrathin pure-phase Li2CoTi3O8 (LCTO) layer with a stable 3D network of spinel structures, relatively low electronic conductivity (2.5 × 10-8 S cm-1) and high lithium diffusion coefficient (DLi+ = 8.22 × 10-7 cm2 s-1) on the surface of LCO. When assembled in ASSLIBs, such an LCTO layer functions as an interlayer between the LCO and the Li10GeP2S12 solid electrolyte (LGPS). As a consequence, the original interface LCO/LGPS is substituted by two new interfaces LCO/LCTO and LCTO/LGPS. DFT calculations indicate that, compared with the LCO/LGPS, the new interfaces are not only thermodynamically and electrochemically more compatible, but also have higher interfacial affinity. Therefore, the relevant ASSLIB exhibits evidently reduced interfacial impedance, and it also displays a high initial capacity of 140 mA h g-1 and a reversible discharge specific capacity of 116 mA h g-1 after 200 cycles at room temperature (0.1C). In comparison, the ASSLIB assembled without the LCTO interlayer delivers an initial capacity of 98 mA h g-1 and only retains 22.4% capacity after 100 cycles (0.1C). Even at a high cutoff voltage (4.5 V vs. Li/Li+), the ASSLIB with the LCTO interlayer could also exhibit a high initial capacity of 180 mA h g-1 and a remarkable retention of 132 mA h g-1 after 100 cycles. © The Royal Society of Chemistry.
英文关键词	Additives; Energy storage; Germanium compounds; Interface states; Lithium compounds; Lithium-ion batteries; Oxide minerals; Solid state devices; Solid state reactions; Solid-State Batteries; Sulfur compounds; Titanium dioxide; All-solid state batteries; All-solid-state lithium ion batteries; Chemical interactions; Cycling performance; Discharge specific capacity; Electronic conductivity; Energy storage technologies; Interfacial impedance; Solid electrolytes; electrolyte; energy storage; engineering; fuel cell; performance assessment; solid
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190820
作者单位	College of Energy, Xiamen University, Xiamen, 361005, China; Beijing Key Laboratory of Microstructure and Properties of Solids, Institute of Microstructure and Properties of Advanced Materials, Beijing University of Technology, Beijing, 100124, China; Department of Chemical Engineering, Institute for Materials Research and Innovation, University of Louisiana at Lafayette, Lafayette, LA 70504, United States; State Key Lab. of Chem. Rsrc. Eng. College of Chemistry Beijing University of Chemical Technology, Beijing, 100029, China; Xtc New Energy Materials (Xiamen) Co. Ltd, Xiamen, 361026, China; Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China; State Key Lab of Physical Chemistry of Solid Surface, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
推荐引用方式 GB/T 7714	Wang C.-W.,Ren F.-C.,Zhou Y.,et al. Engineering the interface between LiCoO2and Li10GeP2S12solid electrolytes with an ultrathin Li2CoTi3O8interlayer to boost the performance of all-solid-state batteries[J],2021,14(1).
APA	Wang C.-W..,Ren F.-C..,Zhou Y..,Yan P.-F..,Zhou X.-D..,...&Sun S.-G..(2021).Engineering the interface between LiCoO2and Li10GeP2S12solid electrolytes with an ultrathin Li2CoTi3O8interlayer to boost the performance of all-solid-state batteries.Energy & Environmental Science,14(1).
MLA	Wang C.-W.,et al."Engineering the interface between LiCoO2and Li10GeP2S12solid electrolytes with an ultrathin Li2CoTi3O8interlayer to boost the performance of all-solid-state batteries".Energy & Environmental Science 14.1(2021).