Recent progress and developments in lithium cobalt phosphate chemistry- Syntheses, polymorphism and properties

Ludwig, Jennifer; Nilges, Tom

doi:10.1016/j.jpowsour.2018.02.038

Cited by 51 publications

(38 citation statements)

References 201 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…LCP, unfortunately, suffers from poor cycle life, mainly attributed to the parasitic degradation reactions at the interface of the electrode and the electrolyte ( Table S3). The working potential of LCP far exceeds the stability limit of standard carbonatebased electrolytes (~4.5 V) [31]. The decomposition products of the electrolyte form resistive films on the particle surfaces, which hinders lithium intercalation reaction thereafter.…”

Section: Electrochemical Characterizationmentioning

confidence: 98%

See 1 more Smart Citation

Comprehensive study of a versatile polyol synthesis approach for cathode materials for Li-ion batteries

et al. 2019

View full text Add to dashboard Cite

This work reports a comprehensive study of a novel polyol method that can successfully synthesize layered LiNi0.4Mn0.4Co0.2O2, spinel LiNi0.5Mn1.5O4, and olivine LiCoPO4 cathode materials. When properly designed, polyol method offers many advantages such as low cost, ease of use, and proven scalability for industrial applications. Most importantly, the unique properties of polyol solvent allow for great morphology control as shown by all the resulting materials exhibiting monodispersed nanoparticles morphology. This morphology contributes to improved lithium ion transport due to short diffusion lengths. Polyolsynthesized LiNi0.4Mn0.4Co0.2O2 delivers a reversible capacity of 101 and 82 mAh g -1 at the high current density of 1000 mA g -1 and 2000 mA g -1 , respectively. It also displays surprisingly high surface structure stability after charge-discharge process. Each step of the reaction was investigated to understand the underlying polyol synthesis mechanism. A combination of in situ and ex situ study reveals the structural and chemical transformation of Ni-Co alloy nanocrystals overwrapped by a Mn-and Li-embedded organic matrix to a series of intermediate phases, and then eventually to the desired layered oxide phase with a homogeneous distribution of Ni, Co, and Mn. We envisage that this type of analysis will promote the development of optimized synthesis protocol by establishing links between experimental factors and important structural and chemical properties of the desired product. The insights can open a new direction of research to synthesize high-performance intercalation compounds by allowing an unprecedented control of intermediate phases using experimental parameters.

show abstract

Section: Electrochemical Characterizationmentioning

confidence: 98%

“…All the diffraction peaks are indexed by the Pnma space group. The olivine structure is based on a distorted hexagonal close-packed oxygen array with P atoms occupying tetrahedral sites and Li and Co occupying the 4a and 4c octahedral sites, respectively [29][30][31].…”

Section: Materials Characterizationmentioning

confidence: 99%

Comprehensive study of a versatile polyol synthesis approach for cathode materials for Li-ion batteries

et al. 2019

View full text Add to dashboard Cite

show abstract

“…[19][20][21][22][23][24] LiCoPO 4 has also attracted signicant attention due to its high redox potential (4.8 V vs. Li/Li + ) and high theoretical capacity (167 mA h g À1 ), making it a promising future cathode material for high-voltage LIBs. [25][26][27][28][29][30] However, use of LiCoPO 4 as a cathode in practical applications has been hindered by its unsatisfactory cycle stability and rate capability, which could be mainly attributed to its low electronic conductivity 17,[31][32][33][34][35][36] and poor Li + ionic conductivity [36][37][38][39][40][41] relating to the one-dimensional ion transport channels, 42 as well as to the decomposition of electrolytes under high potentials. 43 Efforts to overcome the low electronic and ionic conductivity of LiCoPO 4 have included: (1) size reduction and morphology control, decreasing the particle size of LiCoPO 4 or tailoring its crystal growth orientation along the a-c plane to decrease the diffusion length of lithium ions in the insertion/extraction process; 44,45 (2) surface modication (e.g.…”

Section: Introductionmentioning

confidence: 99%

Solvothermal water-diethylene glycol synthesis of LiCoPO₄and effects of surface treatments on lithium battery performance

et al. 2019

View full text Add to dashboard Cite

show abstract

“…We can see that electrochemical properties [15,16] have been the driving force for the development of different cathode materials. Many new studies have focused on electrochemical properties.…”

Section: Introductionmentioning

confidence: 98%

Environmental Sustainability Assessment of Typical Cathode Materials of Lithium-Ion Battery Based on Three LCA Approaches

Wang

et al. 2019

Processes

View full text Add to dashboard Cite

With the rapid increase in production of lithium-ion batteries (LIBs) and environmental issues arising around the world, cathode materials, as the key component of all LIBs, especially need to be environmentally sustainable. However, a variety of life cycle assessment (LCA) methods increase the difficulty of environmental sustainability assessment. Three authoritative LCAs, IMPACT 2002+, Eco-indicator 99(EI-99), and ReCiPe, are used to assess three traditional marketization cathode materials, compared with a new cathode model, FeF3(H2O)3/C. They all show that four cathode models are ranked by a descending sequence of environmental sustainable potential: FeF3(H2O)3/C, LiFe0.98Mn0.02PO4/C, LiFePO4/C, and LiCoO2/C in total values. Human health is a common issue regarding these four cathode materials. Lithium is the main contributor to the environmental impact of the latter three cathode materials. At the midpoint level in different LCAs, the toxicity and land issues for LiCoO2/C, the non-renewable resource consumption for LiFePO4/C, the metal resource consumption for LiFe0.98Mn0.02PO4/C, and the mineral refinement for FeF3(H2O)3/C show relatively low environmental sustainability. Three LCAs have little influence on total endpoint and element contribution values. However, at the midpoint level, the indicator with the lowest environmental sustainability for the same cathode materials is different in different methodologies.

show abstract

Recent progress and developments in lithium cobalt phosphate chemistry- Syntheses, polymorphism and properties

Cited by 51 publications

References 201 publications

Comprehensive study of a versatile polyol synthesis approach for cathode materials for Li-ion batteries

Comprehensive study of a versatile polyol synthesis approach for cathode materials for Li-ion batteries

Solvothermal water-diethylene glycol synthesis of LiCoPO₄and effects of surface treatments on lithium battery performance

Environmental Sustainability Assessment of Typical Cathode Materials of Lithium-Ion Battery Based on Three LCA Approaches

Contact Info

Product

Resources

About

Recent progress and developments in lithium cobalt phosphate chemistry- Syntheses, polymorphism and properties

Cited by 51 publications

References 201 publications

Comprehensive study of a versatile polyol synthesis approach for cathode materials for Li-ion batteries

Comprehensive study of a versatile polyol synthesis approach for cathode materials for Li-ion batteries

Solvothermal water-diethylene glycol synthesis of LiCoPO4and effects of surface treatments on lithium battery performance

Environmental Sustainability Assessment of Typical Cathode Materials of Lithium-Ion Battery Based on Three LCA Approaches

Contact Info

Product

Resources

About

Solvothermal water-diethylene glycol synthesis of LiCoPO₄and effects of surface treatments on lithium battery performance