
Research Progress of Ni-Rich Cathode Materials
Tianyu Wang, Li Wang, Wei Sun, Meirong Wu, Yue Yang
Prog Chem ›› 2024, Vol. 36 ›› Issue (7) : 1026-1045.
Research Progress of Ni-Rich Cathode Materials
Benefiting from high energy density and low cost,Ni-rich LiNixCoyMn/Al1-x-yO2materials have received great attention as promising cathode candidates for next-generation high-energy lithium-ion batteries(LIBs)that are widely used in electric vehicles(EVs).However,with an increased Ni content,Ni-rich cathode materials suffer from severe structural,chemical,and mechanical instabilities,seriously restricting their industrially safe application in power LIBs of EVs.In this review,primarily,the synthesis methods of Ni-rich cathode materials are summarized in detail,which include solid-state method,sol-gel method,hydrothermal method,spray-drying method,and co-precipitation method.Subsequently,the key failure mechanisms,including ion mixing and irreversible phase transition,residual Li species and interface side reactions,mechanical microcracks,and transition metal dissolutions,are thoroughly analyzed throughout the preparation,storage,and service of Ni-rich cathode materials,thereby clarifying various performance decay behaviors of materials.The modification strategies that cover ion doping,surface coating,core-shell/gradient materials,and single-crystal materials are systematically discussed for Ni-rich cathode materials,aiming at presenting conspicuous research progress and current shortcomings for the stabilization of Ni-rich cathode materials.Finally,this review presents a perspective toward future development and optimization for Ni-rich cathode materials,aiming at delivering a theoretical guidance for propelling its industrial safe application in high-energy LIBs 。
1 Introduction
2 Synthetic method
2.1 Solid-state method
2.2 Sol-gel method
2.3 Hydrothermal method
2.4 Spray-drying method
2.5 Coprecipitation method
3 Failure mechanism
3.1 Ion mixing and irreversible phase transition
3.2 Surface residual Li species and interface side reaction
3.3 Microcracks induced by internal stress
3.4 Dissolution of transition metals
4 Modification method
4.1 Ion doping
4.2 Surface coating
4.3 Core-shell/gradient material design
4.4 Single-crystal material design
5 Conclusion and outlook
Ni-rich cathode materials / synthesis methods / failure mechanism / modification methods / synergistic modification
[1] |
|
[2] |
(杨续来, 袁帅帅, 杨文静, 刘闯, 杨世春. 机械工程学报, 2023, 59: 239.).
|
[3] |
|
[4] |
|
[5] |
|
[6] |
|
[7] |
|
[8] |
|
[9] |
|
[10] |
|
[11] |
|
[12] |
|
[13] |
|
[14] |
|
[15] |
|
[16] |
|
[17] |
|
[18] |
|
[19] |
|
[20] |
|
[21] |
|
[22] |
|
[23] |
|
[24] |
|
[25] |
|
[26] |
|
[27] |
|
[28] |
|
[29] |
|
[30] |
|
[31] |
|
[32] |
|
[33] |
|
[34] |
|
[35] |
|
[36] |
|
[37] |
|
[38] |
|
[39] |
|
[40] |
|
[41] |
|
[42] |
|
[43] |
|
[44] |
|
[45] |
|
[46] |
|
[47] |
|
[48] |
|
[49] |
|
[50] |
|
[51] |
|
[52] |
|
[53] |
|
[54] |
|
[55] |
|
[56] |
|
[57] |
|
[58] |
|
[59] |
|
[60] |
|
[61] |
|
[62] |
|
[63] |
|
[64] |
|
[65] |
|
[66] |
|
[67] |
|
[68] |
|
[69] |
|
[70] |
|
[71] |
|
[72] |
|
[73] |
|
[74] |
|
[75] |
|
[76] |
|
[77] |
|
[78] |
|
[79] |
|
[80] |
|
[81] |
|
[82] |
|
[83] |
|
[84] |
|
[85] |
|
[86] |
|
[87] |
|
[88] |
|
[89] |
|
[90] |
|
[91] |
|
[92] |
|
[93] |
|
[94] |
|
[95] |
|
[96] |
|
[97] |
|
[98] |
|
[99] |
|
[100] |
|
[101] |
|
[102] |
|
[103] |
|
[104] |
|
[105] |
|
[106] |
|
[107] |
|
[108] |
|
[109] |
|
[110] |
|
[111] |
|
[112] |
|
[113] |
|
[114] |
|
[115] |
|
[116] |
|
[117] |
|
[118] |
|
[119] |
|
[120] |
|
[121] |
|
[122] |
|
[123] |
|
[124] |
|
[125] |
|
[126] |
|
[127] |
|
[128] |
|
[129] |
|
[130] |
|
[131] |
|
[132] |
|
[133] |
|
[134] |
|
[135] |
|
[136] |
|
[137] |
|
[138] |
|
[139] |
|
[140] |
|
[141] |
|
[142] |
|
[143] |
|
[144] |
|
[145] |
|
[146] |
|
[147] |
|
[148] |
|
[149] |
|
[150] |
|
/
〈 |
|
〉 |