Improving rate performances of Li-rich layered oxide by the co-doping of Sn and K ions

Li, Bao; Wang, Xinbo; Gao, Yibo; Bao, Wang; Qiu, Jinxu; Cheng, Xu; Dai, Dongmei

doi:10.1016/j.jmat.2019.01.005

Cited by 18 publications

(3 citation statements)

References 38 publications

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“…Due to the positive effect of Nd/Al dopants and the small difference in cation size between Li and Ni, Ni ions can fill the octahedral sites in the Li layer and form a rock salt surface through the concurrent removal of Li and O, thereby leading to improved mechanical properties and electrochemical performance. [ 217 ] Other examples of dual dopants are Sn/K [ 218 ] and Na/PO 4 [ 219 ] for Li‐rich oxides, which can substantially boost the capacity retention by over 40% at a high rate of 10C and reach 153 mAh g −1 at 5C, respectively. Similar to previously mentioned principle, these two dual dopants can expand the slabs for an improved Li shuttling path, while the highly electronegative PO 4 3– anions of the latter dopant can facilitate structural stability.…”

Section: Promising Candidates Of Cobalt‐free Lithium‐ion Cathodesmentioning

confidence: 99%

Cobalt‐Free Cathode Materials: Families and their Prospects

Zhao

Lam

Sheng

et al. 2022

Advanced Energy Materials

116

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With the rapid growth of global electro‐mobility, the demand for cobalt is rapidly increasing because it is currently an indispensable component of the cathode materials in lithium‐ion batteries (LIBs). However, the use of Co raises moral issues caused by its exploitation and the geographic limitations of Co resources may result in risking the supply of LIBs. Thus, the development of cobalt‐free (Co‐free) cathodes has become a focus in the LIBs industry. Currently, Co‐free cathodes of lithium‐rich oxides, nickel‐rich layered oxides and spinel lithium nickel manganese oxide (LNMO) are promising candidates but face severe problems. This review article is the first to synthesize and present the progress of Co‐free cathodes made with Li‐rich oxides, Ni‐rich layered oxides and spinel LNMO, identifying their performance, problems and potential development trends. In particular, the roles of cobalt are further clarified, and the full‐cell performance and related commercialization prospects of the three above‐mentioned Co‐free cathodes are also objectively assessed. The focus of this work is to distill detailed and timely insights from the corresponding research progress on these materials and to demonstrate the associated urgency, challenges and opportunities in this field, thus facilitating a faster industrialization of Co‐free cathodes.

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Section: Promising Candidates Of Cobalt‐free Lithium‐ion Cathodesmentioning

confidence: 99%

Cobalt‐Free Cathode Materials: Families and their Prospects

Zhao

Lam

Sheng

et al. 2022

Advanced Energy Materials

116

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“…), anionic doping (such as F − , 196,197 Cl − , 198,199 S 2− , 200 PO 4 3− , 201,202 SO 4 2− , 203 SiO 4 4− , 204 (BO 3 ) 3− , 205 (BO 4 ) 5− , 205 etc. ), and co-doping (such as Na + and F − , 206 Ce 3+ and F − , 207 Cd 2+ and S 2− , 208 Na + and PO 4 3− , 209 Al 3+ and F − , 210 Ni 2+ and SO 4 2− , 203 Sn 4+ and K + , 211 etc. ).…”

Section: Modification Strategies Of Lrmo Cathode Materialsmentioning

confidence: 99%

Recent advances in lithium-rich manganese-based cathodes for high energy density lithium-ion batteries

Chen¹,

Sun²

2023

Chem. Commun.

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“…Specifically, the NCO@NCS anode was contacted with the lithium foil in the applied electrolyte under extra pressure for 2 h. The full devices were all assembled in the same condition as those for the half-cells. The nominal capacity used in this section according to the cathode material (NCM) was ∼200 mAh g –1 , , and the calculation of specific energy density ( E ) of devices was performed according to the equation E = C × V × (1 – δ), in which V , C , and δ represent average potential, specific discharge capacity, and penalty factor, respectively. All of the devices were packaged by applying the same separators and electrolytes with those in half-cells.…”

Section: Experimental Sectionmentioning

confidence: 99%

Formation of Nanodimensional NiCoO₂ Encapsulated in Porous Nitrogen-Doped Carbon Submicrospheres from a Bimetallic (Ni, Co) Organic Framework toward Efficient Lithium Storage

Denis

Wang

Sun

et al. 2019

ACS Appl. Mater. Interfaces

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Recently, rock-salt NiCoO 2 (NCO) with desirable electronic conductivity has drawn enormous interest worldwide for energy-related applications. However, the intrinsically sluggish kinetics and electrode aggregation/ volumetric change/pulverization during Li-insertion/-extraction processes hugely limit its applications in Li-ion batteries (LIBs). In the contribution, we first devise a bottom-up method for scalable fabrication of the nanodimensional NCO particles encapsulated in porous nitrogen-doped carbon submicrospheres (NCS), which are derived from a bimetal (Ni, Co) metal-organic framework. The porous NCS, as a flexible conductive skeleton, can buffer distinct volume expansion as an efficient buffering phase, restrain agglomeration of nanoscaled NCO, and enhance electronic conductivity and wettability of the electrode. Benefiting from the synergistic functions between the nanodimensional NCO and porous NCS, the obtained NCO@NCS anode (∼74.5 wt % NCO) is endowed with remarkable high-rate reversible capacity (∼403.0 mAh g −1 at 1.0 A g −1 ) and cycling behaviors (∼371.4 mAh g −1 after being cycled for 1000 times at 1.0 A g −1 ) along with a high lithium diffusion coefficient and remarkable pseudocapacitive contribution. Furthermore, the NCO@NCS-based full LIBs exhibit competitive lithium-storage properties in terms of energy density (∼217.0 Wh kg −1 ) and cyclic stability. Furthermore, we believe that the methodology is highly promising in versatile design and construction of binary metal oxide/carbon hybrid anodes for advanced LIBs.

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Improving rate performances of Li-rich layered oxide by the co-doping of Sn and K ions

Cited by 18 publications

References 38 publications

Cobalt‐Free Cathode Materials: Families and their Prospects

Cobalt‐Free Cathode Materials: Families and their Prospects

Recent advances in lithium-rich manganese-based cathodes for high energy density lithium-ion batteries

Formation of Nanodimensional NiCoO₂ Encapsulated in Porous Nitrogen-Doped Carbon Submicrospheres from a Bimetallic (Ni, Co) Organic Framework toward Efficient Lithium Storage

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Improving rate performances of Li-rich layered oxide by the co-doping of Sn and K ions

Cited by 18 publications

References 38 publications

Cobalt‐Free Cathode Materials: Families and their Prospects

Cobalt‐Free Cathode Materials: Families and their Prospects

Recent advances in lithium-rich manganese-based cathodes for high energy density lithium-ion batteries

Formation of Nanodimensional NiCoO2 Encapsulated in Porous Nitrogen-Doped Carbon Submicrospheres from a Bimetallic (Ni, Co) Organic Framework toward Efficient Lithium Storage

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Product

Resources

About

Formation of Nanodimensional NiCoO₂ Encapsulated in Porous Nitrogen-Doped Carbon Submicrospheres from a Bimetallic (Ni, Co) Organic Framework toward Efficient Lithium Storage