Research and development of advanced battery materials in China

Lu, Yaxiang; Rong, Xiaohui; Hu, Yong‐Sheng; Chen, Liquan; Li, Hong

doi:10.1016/j.ensm.2019.05.019

Cited by 198 publications

(121 citation statements)

References 78 publications

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“…Theo xidation stability of various electrolytes was evaluated with carbon-coated Al foil as electrode.F rom the Figure S4a, lower anodic current can be obtained in the TPFPB-containing system, which means the decomposition of TPFPB from about 4.3 Vc an passivate the cathode and 7 Li and c) 11 BNMR spectra of electrolytes with different components. d) Raman spectra of the pure EMC electrolyte and dualadditives electrolyte.…”

Section: Resultsmentioning

confidence: 98%

“…To further understand the dissolution mechanism and effect of TPFPB on the electrolyte solvation structure,N MR spectroscopy was carried out. The 7 Li signal of the lithium salts in the electrolyte gradually shifts from d = À0.89 to À0.87 ppm after adding TPFPB into the basic EMC electrolyte,i ndicating ad eshielding effect by the electron-deficient B. However,t he 7 Li chemical shift of the LiNO 3 -TPFPB dual additive moves to d = À0.94 ppm, which may be attributed to the introduction of the electron-rich ions of NO 3 À .T he 11 Bs pectra also validate the existence of electron-donating groups around the TPFPB molecules, reflected as an upfield shift from d = À1.3 to À1.7 ppm. This kind of upfield shift was also detected in the TPFPP-LiNO 3 system (see Figure S2).…”

Section: Resultsmentioning

confidence: 99%

“…[4][5][6] To further enhance the energy density of batteries,t he combination of ah igh-capacity cathode with higher charging voltage and lithium metal anode (3860 mAh g À1 )i sr egarded as an intriguing approach to attain the goal of 500 Wh kg À1 , for example,l ithium metal with LiNi 0.8 Mn 0.1 Co 0.1 O 2 (NCM811), high-voltage LiCoO 2 (LCO), or LiNi 0.5 Mn 1.5 O 4 / Li (LNMO). [7,8] Fort he anode,t he intrinsic lowest redox potential (À3.04 Vv ersus standard hydrogen electrode) of lithium metal makes it possible to pair with any known cathode materials,b ut it also brings ah igher reactivity,l eading to an uncontrolled interfacial reactions and unstable electrochemical stability. [9][10][11] Thep roblems such as limited Coulombic efficiency (CE) and dendritic lithium electrodeposition preclude the practical application of rechargeable lithiummetal batteries (LMBs).…”

Section: Introductionmentioning

confidence: 99%

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Synergistic Dual‐Additive Electrolyte Enables Practical Lithium‐Metal Batteries

et al. 2020

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A rechargeable Li metal anode coupled with a high‐voltage cathode is a promising approach to high‐energy‐density batteries exceeding 300 Wh kg−1. Reported here is an advanced dual‐additive electrolyte containing a unique solvation structure and it comprises a tris(pentafluorophenyl)borane additive and LiNO3 in a carbonate‐based electrolyte. This system generates a robust outer Li2O solid electrolyte interface and F‐ and B‐containing conformal cathode electrolyte interphase. The resulting stable ion transport kinetics enables excellent cycling of Li/LiNi0.8Mn0.1Co0.1O2 for 140 cycles with 80 % capacity retention under highly challenging conditions (≈295.1 Wh kg−1 at cell‐level). The electrolyte also exhibits high cycling stability for a 4.6 V LiCoO2 (160 cycles with 89.8 % capacity retention) cathode and 4.95 V LiNi0.5Mn1.5O4 cathode.

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Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Synergistic Dual‐Additive Electrolyte Enables Practical Lithium‐Metal Batteries

et al. 2020

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“…Batteries with high energy densities have been a long‐term pursuit in multiple fields, such as electric vehicles, unmanned drones, and portable electronics . Despite the great success of lithium‐ion batteries (LIBs) in the past 30 years, the energy density of LIBs is approaching the theoretical limit, providing a huge impetus for the research of emerging battery chemistries . Lithium‐sulfur (Li‐S) batteries have attracted worldwide attention in recent years because the combination of the most energy‐dense Li metal as anode and earth‐abundant, high‐specific capacity S as cathode creates an overwhelming theoretical energy density of 2600 Wh kg −1 .…”

Section: Introductionmentioning

confidence: 99%

A compact inorganic layer for robust anode protection in lithium‐sulfur batteries

Yao

Zhang

et al. 2019

InfoMat

208

106

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Lithium‐sulfur (Li‐S) batteries are one of the most promising candidates for high energy density rechargeable batteries beyond current Li‐ion batteries. However, severe corrosion of Li metal anode and low Coulombic efficiency (CE) induced by the unremitting shuttle of Li polysulfides immensely hinder the practical applications of Li‐S batteries. Herein, a compact inorganic layer (CIL) formed by ex situ reactions between Li anode and ionic liquid emerged as an effective strategy to block Li polysulfides and suppress shuttle effect. A CE of 96.7% was achieved in Li‐S batteries with CIL protected Li anode in contrast to 82.4% for bare Li anode while no lithium nitrate was employed. Furthermore, the corrosion of Li during cycling was effectively inhibited. While applied to working batteries, 80.6% of the initial capacity after 100 cycles was retained in Li‐S batteries with CIL‐protected ultrathin (33 μm) Li anode compared with 58.5% for bare Li anode, further demonstrating the potential of this strategy for practical applications. This study presents a feasible interfacial regulation strategy to protect Li anode with the presence of Li polysulfides and opens avenues for Li anode protection in Li‐S batteries under practical conditions.

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“…Pursuing the development of reliable rechargeable lithium metal batteries (LMBs), many laboratories across the world started programs to accelerate research on LMB. For example, the United States established the Battery500 consortium in 2016, and China launched the Made in China 2025 project in 2015, all aiming to revive metallic lithium anode for higher‐energy‐density rechargeable batteries …”

Section: Introductionmentioning

confidence: 99%

Polymer Chemistry for Improving Lithium Metal Anodes

Lorandi

Whitacre

et al. 2019

Macro Chemistry & Physics

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Initially commercialized by Sony in 1991, lithium ion batteries (LIBs) continue to dominate the market due to several advantages, such as higher energy density, longer cycle life, and wider working temperature compared to other common battery systems. [6] However, the development of LIBs has hit the bottleneck in recent years. An LIB with graphite anode and metal oxide cathode typically delivers a pack-level energy density lower than 300 Wh kg −1 , which struggles to satisfy the energy requirement for the contemporary technology demand and expansion. [6] Taking electric vehicles (EVs) as an example, manufacturing an EV that runs over 500 miles on one charge requires to develop a battery pack that can deliver > 500 Wh kg −1. [7,8] However, the graphite anode in LIBs has a limited theoretical capacity of 375 Ah kg −1. In contrast, the direct use of metallic lithium as anode can dramatically improve the cell energy density. Indeed, lithium metal has the lowest redox potential (−3.04 V vs standard hydrogen electrode [SHE]), high theoretical capacity (3860 Ah kg −1) and inexpensive market price. [9] Moreover, the adoption of lithium metal anodes allows for using non-lithiated high-energy-density cathodes, such as sulfur and oxygen. [10] Pursuing the development of reliable rechargeable lithium metal batteries (LMBs), many laboratories across the world started programs to accelerate research on LMB. For example, the United States established the Battery500 consortium in 2016, and China launched the Made in China 2025 project in 2015, all aiming to revive metallic lithium anode for higher-energy-density rechargeable batteries. [11] Conventionally, the use of polymer materials in practical LIBs is mostly limited to polyolefin-based separators and inactive binding materials in the cathode. [12] Polymer binders, most commonly poly(vinylidene fluoride) (PVDF), serve to affix active cathodic materials and conductive fillers to aluminum current collectors during charge/discharge. [8] In the last decades, the development of advanced polymerization techniques, such as atom transfer radical polymerization (ATRP), reversible addition−fragmentation chain-transfer (RAFT) polymerization, or nitroxide mediated polymerization (NMP), and post-polymerization modification chemistries has opened new avenues for creating polymer materials with controlled molecular weight (MW) and dispersity, chain morphology, functionality, and chemical and physical properties. [13-18] As these two fields-polymer science and battery science-come to bridge each other, inspirations and new opportunities arise. [17,19-24] When building a reliable high-energy-density LMB, five primary aspects need to be considered: the cathode and the cathode-electrolyte interface (CEI), the separator/electrolyte, the anode-electrolyte Lithium metal anode based rechargeable batteries (LMBs) are regarded as a highly appealing alternatives to replace state-of-the-art lithium ion batteries (LIBs) for applications that demand higher energy density. Due to the highly reactive natur...

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Research and development of advanced battery materials in China

Cited by 198 publications

References 78 publications

Synergistic Dual‐Additive Electrolyte Enables Practical Lithium‐Metal Batteries

Synergistic Dual‐Additive Electrolyte Enables Practical Lithium‐Metal Batteries

A compact inorganic layer for robust anode protection in lithium‐sulfur batteries

Polymer Chemistry for Improving Lithium Metal Anodes

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