Additive evolved stabilized dual electrode-electrolyte interphases propelling the high-voltage Li||LiCoO2 batteries up to 4.7 V - Details

Author：

Indexed by：

EI Scopus SCIE

Abstract：

Elevating　the　cutoff　voltage　over　4.65　V　notably　augments　the　energy　density　of　LCO　batteries,　but　concomitant　irreversible　internal　structural　deterioration　and　serious　side　reactions　at　interface　accelerate　the　capacity　decay.　The　application　requirement　of　high-voltage　LCO　batteries　is　still　challenging.　Triphenylphosphine　selenide　(TPPSe)　served　as　multi-functional　additive　is　involved　in　the　electrolyte　to　concurrently　construct　stabilized　solid　electrolyte　interphase　(SEI)　and　cathode/electrolyte　interphase　(CEI)　films　and　enhance　the　durability　of　high-voltage　LCO　batteries,　benefited　from　the　distinctive　Se[dbnd]P　group.　The　specific　Se[dbnd]P　group　in　TPPSe　could　be　oxided　in　priority　at　cathode　side　to　form　SeOx　and　phosphate　to　enhance　the　high-voltage　stability　of　LCO,　and　reduced　at　anode　side　to　form　Li2Se　and　Li3P,　the　lithium　(Li)　metal　anode　is　well　protected.　Only　0.2　wt%　TPPSe　is　added　into　the　baseline　electrolyte,　the　discharge　capacity　of　LCO　batteries　is　improved　from　44　mAh　g−1　to　159　mAh　g−1　after　500　cycles　at　1　C　rate　in　the　voltage　range　of　3.0–4.65　V.　The　functioning　mechanism　is　revealed　by　XPS,　TOF-SIMS,　STEM,　AFM,　DEMS,　et.　al.,　combining　with　theoretical　calculation.　Furthermore,　10　wt%　FEC　and　1　wt%　HTCN　are　introduced　in　the　TPPSe-containing　electrolyte　to　powerfully　heighten　the　high-voltage　stability.　As　expected,　the　Li||LCO　pouch　cell　realizes　the　capacity　of　169　mAh　g−1　after　100　cycles　at　ultrahigh　cutoff　voltage　(4.7　V)　with　low　N/P　ratio　(1.19).　Such　an　effective　electrolyte-based　strategy　provides　promising　insight　into　the　exploitation　of　valuable　and　practical　electrolyte　additives　and　realization　of　high-voltage　LCO-based　batteries　with　superior　cycling　performance.　©　2023　Elsevier　Ltd

Keyword：

Electric discharges Selenium compounds Secondary ion mass spectrometry Solid-State Batteries Deterioration Anodes Additives Cobalt compounds Lithium compounds Solid electrolytes Cathodes

Author Community：

[ 1 ] [Fu, Ang]State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Fujian, Xiamen; 361005, China
[ 2 ] [Fu, Ang]Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Fujian, Xiamen; 361005, China
[ 3 ] [Lin, Jiande]State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Fujian, Xiamen; 361005, China
[ 4 ] [Zheng, Jianming]State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Fujian, Xiamen; 361005, China
[ 5 ] [Zheng, Jianming]Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Fujian, Xiamen; 361005, China
[ 6 ] [Wu, De-Yin]State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Fujian, Xiamen; 361005, China
[ 7 ] [Zhang, Zhengfeng]Beijing Key Laboratory of Microstructure and Property of Solids, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing; 100124, China
[ 8 ] [Yan, Pengfei]Beijing Key Laboratory of Microstructure and Property of Solids, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing; 100124, China
[ 9 ] [Su, Yu]State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Fujian, Xiamen; 361005, China
[ 10 ] [Xu, Chuanjing]State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Fujian, Xiamen; 361005, China
[ 11 ] [Hao, Jialiang]State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Fujian, Xiamen; 361005, China
[ 12 ] [Zheng, Hongpeng]State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai; 200240, China
[ 13 ] [Duan, Huanan]State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai; 200240, China
[ 14 ] [Ding, Yu]State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Fujian, Xiamen; 361005, China
[ 15 ] [Yan, Jiawei]State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Fujian, Xiamen; 361005, China
[ 16 ] [Huang, Shengyuan]21C Innovation Laboratory of Contemporary Amperex Technology Co., Limited, Fujian, Ningde; 352100, China
[ 17 ] [Liu, Chengyong]21C Innovation Laboratory of Contemporary Amperex Technology Co., Limited, Fujian, Ningde; 352100, China
[ 18 ] [Tang, Chao]Ningde Amperex Technology Limited, Fujian; 352100, China
[ 19 ] [Fang, Xiaoliang]College of Energy, Xiamen University, Fujian, Xiamen; 361005, China
[ 20 ] [Yang, Yong]State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Fujian, Xiamen; 361005, China
[ 21 ] [Yang, Yong]College of Energy, Xiamen University, Fujian, Xiamen; 361005, China
[ 22 ] [Yang, Yong]Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Fujian, Xiamen; 361005, China

Reprint Author's Address：

Email：

Related Keywords：

Preparation and performance of 3D-printed positive electrode for lithium-ion battery
2020，Chinese Journal of Engineering
Carbon coated chevrel phase of Mo6S8 as anode material for improving electrochemical properties of aqueous lithium-ion batteries
2017，Electrochimica Acta
In Situ Construction of Uniform and Robust Cathode–Electrolyte Interphase for Li-Rich Layered Oxides
2021，Advanced Functional Materials
How does lithium oxalyldifluoroborate enable the compatibility of ionic liquids and carbon-based capacitors?
2015，Journal of Power Sources

Type
Departments

All Years Choose Year From to