Voltage hysteresis of lithium ion batteries caused by mechanical stress

Lu, Bo; Song, Yicheng; Zhang, Qinglin; Pan, Jie; Cheng, Yang‐Tse; Jun-qian, Zhang

doi:10.1039/c5cp06179b

Cited by 169 publications

(119 citation statements)

References 39 publications

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“…Hence, in order to investigate the relationship between the electrochemically driven stress and disintegration of CuS, qualitative stress profile is obtained based on modified Butler-Volmer equation including a stress term (Figure 3a) [21,22] Hence, in order to investigate the relationship between the electrochemically driven stress and disintegration of CuS, qualitative stress profile is obtained based on modified Butler-Volmer equation including a stress term (Figure 3a) [21,22] …”

Section: Morphological Evolution Of Cus Nanoplates Upon Cyclingmentioning

confidence: 99%

“…Stress Profile Calculation: Stress-induced overpotential profile in Figure 3 is obtained using modified Butler-Volmer equation including a stress effect [21] …”

Section: Wwwadvancedsciencecommentioning

confidence: 99%

“…GITT was performed by applying pulse currents corresponding 0.2 C and 3 C for 20 min and 1 min 20 s with time interval of 2 h. For the calculation, following values are used [21,22] = 298 K T GITT was performed by applying pulse currents corresponding 0.2 C and 3 C for 20 min and 1 min 20 s with time interval of 2 h. For the calculation, following values are used [21,22] = 298 K T …”

Section: Wwwadvancedsciencecommentioning

confidence: 99%

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Pulverization‐Tolerance and Capacity Recovery of Copper Sulfide for High‐Performance Sodium Storage

et al. 2019

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Finding suitable electrode materials is one of the challenges for the commercialization of a sodium ion battery due to its pulverization accompanied by high volume expansion upon sodiation. Here, copper sulfide is suggested as a superior electrode material with high capacity, high rate, and long‐term cyclability owing to its unique conversion reaction mechanism that is pulverization‐tolerant and thus induces the capacity recovery. Such a desirable consequence comes from the combined effect among formation of stable grain boundaries, semi‐coherent boundaries, and solid‐electrolyte interphase layers. The characteristics enable high cyclic stability of a copper sulfide electrode without any need of size and morphological optimization. This work provides a key finding on high‐performance conversion reaction based electrode materials for sodium ion batteries.

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Section: Morphological Evolution Of Cus Nanoplates Upon Cyclingmentioning

confidence: 99%

“…Stress Profile Calculation: Stress-induced overpotential profile in Figure 3 is obtained using modified Butler-Volmer equation including a stress effect [21] …”

Section: Wwwadvancedsciencecommentioning

confidence: 99%

Section: Wwwadvancedsciencecommentioning

confidence: 99%

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Pulverization‐Tolerance and Capacity Recovery of Copper Sulfide for High‐Performance Sodium Storage

et al. 2019

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“…Further, the overpotential, which is the difference between the real‐time and equilibrium potentials, is used to characterize the difficulty of reaction. The overpotential is negative when lithiated and positive when delithiated, and smaller overpotential absolute values signify smaller amounts of energy needed for lithiation and an easier lithiation reaction . Next, we further analyze how stress affects the overpotential and the reaction by means of mechanical models.…”

Section: Results Of Electrochemical Behavior Responses Under Active Smentioning

confidence: 99%

“…have analyzed the dependent relationship of potential with the state of the coupled stress . Song and co‐workers have found that coupled compressive stress impedes lithiation and therefore results in a higher overpotential using a modified Butler–Volmer equation . More related studies have indicated that lithium‐ion diffusion and lithiation‐induced crack in electrodes are significantly influenced by coupled stress during the electrochemical process .…”

Section: Introductionmentioning

confidence: 99%

Active Tensile/Compressive Stress‐Regulated Electrochemical Behavior and Mechanism in Electrodes

et al. 2018

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Coupling of mechanical load and electrochemical behavior of an electrode determines its fading process. Here, active‐stress‐regulated electrochemical behavior is investigated experimentally. A coin‐cell structure with curved spacers is designed to load active tensile/compressive stresses onto Si‐composite electrodes to decouple the effect from coupled stress. Electrochemical tests are conducted to measure the cyclic and kinetic performance in electrodes. It is found that active tensile (compressive) stress enhances (inhibits) the electrochemical behavior of Si‐composite electrodes, manifesting as improved (worsened) cyclic performance and faster (slower) diffusion and reaction. Furthermore, the extent of enhancement due to tensile stress is greater than the extent of inhibition induced by an equivalent compressive stress. Multi‐scale analyses of the regulation mechanism of active stress on electrochemical behavior are performed and show that active tensile stress provides more channels for ion transport and electron migration. It also increases spaces for deformation to achieve multi‐scale alleviation of compressive stress, including that originating from particle contact and that along the electrode thickness. Both diffusion and reaction are enhanced in particles and electrodes. Active tensile stress enhances cyclic performance and reduces energy dissipation, while the inhibition mechanism of active compressive stress is the opposite.

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Microstructure Controlled Porous Silicon Particles as a High Capacity Lithium Storage Material via Dual Step Pore Engineering

Sohn

Lee

Park

et al. 2018

Adv Funct Materials

119

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To overcome the lithium storage barriers of current lithium-ion batteries, it is imperative that conventional low capacity graphite anodes be replaced with other higher capacity anode materials. Silicon is a promising alternative anode material due to its huge energy densities; however, its lithiumconcentration-dependent volumetric changes can induce severely adverse effects that lead to drastic degradations in capacity during cycling. The dealloying of Si-metal alloys is recently suggested as a scalable approach to fabricate high-performance porous Si anode materials. Herein, a microstructure controlled porous Si is developed by the dealloying in conjunction with wet alkaline chemical etching. The resulting 3D networked structure enables enhancement in lithium storage properties when the Si-based material is applied not only as a single active material but also in a graphite-blended electrode.

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Voltage hysteresis of lithium ion batteries caused by mechanical stress

Cited by 169 publications

References 39 publications

Pulverization‐Tolerance and Capacity Recovery of Copper Sulfide for High‐Performance Sodium Storage

Pulverization‐Tolerance and Capacity Recovery of Copper Sulfide for High‐Performance Sodium Storage

Active Tensile/Compressive Stress‐Regulated Electrochemical Behavior and Mechanism in Electrodes

Microstructure Controlled Porous Silicon Particles as a High Capacity Lithium Storage Material via Dual Step Pore Engineering

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