Stearic acid/expanded graphite as a composite phase change thermal energy storage material for tankless solar water heater

Li, Chuanchang; Zhang, Bo; Xie, Baoshan; Zhao, Xiangui; Chen, Jian; Chen, Zhongsheng; Long, Yi

doi:10.1016/j.scs.2018.10.041

Cited by 130 publications

(38 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results imply that as CSR activities increase, long-term performance decreases. However, when we introduce an interaction term, CSR × OC, which combines the CSR dummy (if CSR > 0, then CSR_D = 1, otherwise 0) with OC ranks (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20) as in models 3 and 4, the results are totally different. The relationship between CSR and AAR turns to positive and significant (p-value < 5%) in model 3.…”

Section: Resultsmentioning

confidence: 99%

“…A number of empirical studies have shown that the more CSR activities a company is involved in, the better its long-term performance (e.g., [8,9]). Li et al [10] investigated equity returns and showed that a portfolio consisting of the best CSR companies in the world generated positive abnormal returns. On the other hand, the relationship between CSR and financial performance could be negative, because CSR expenditures cause additional costs for firms and divert funds from more profitable potential investments.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Managerial Overconfidence, Corporate Social Responsibility Activities, and Financial Constraints

2019

View full text Add to dashboard Cite

Managerial overconfidence refers to managers' cognitive bias, according to which they demonstrate unwarranted belief in their own judgments and capabilities. This study provides a new measurement of CEO overconfidence through textual analysis of management discussion and analysis (MD&A) in 10-K documents by making use of the US Securities and Exchange Commission (SEC) EDGAR database. Overconfidence was obtained from "optimism" using the Diction program. From a sample of 19,367 US firms from 1994 to 2016, we found that CEO overconfidence was negatively related to corporate social responsibility (CSR) activities. Since overconfident CEOs are likely to consider CSR activities less important than their own ability, they seem to reduce CSR activities. Also, CSR activities initiated by overconfident CEOs were negatively related to firms' long-term performance. However, CSR activities led to positive long-term performance in firms that were financially constrained. Our findings show that CSR activities undertaken as a result of CEO overconfidence by financially unconstrained firms could be harmful to shareholder value in the long term.Sustainability 2020, 12, 61 2 of 14 CSR activities are diverse and mostly require financial resources, which include community engagement, marketing and advertising, customer relations, workplace health and safety, union relations, human rights policies, product safety and quality, transparency in reporting, governance structure, and environmental protection activities. Chan et al. [14] found that, in general, firms facing financial constraints do not engage in any CSR activities. Zhao and Xiao [15] also found that CSR engagement is negatively correlated with financial constraints. Therefore, if firms face financial constraints with regard to engaging in CSR activities, rigorous CSR activities could be harmful to their long-term performance. We examine the long-term performance of CSR activities initiated by overconfident CEOs, considering financial constraints.Prior research on the impact of a CEO's emotional bias (optimism, loss aversion, overconfidence) and other self-serving bias on corporate strategic decisions included financing decision [16], investments [17], dividend payment [18], cost behavior, and R&D expenditure [19]. This paper tries to examine the impact of CEOs' overconfidence level on CSR activities for the first time. As far as we know, no previous research has investigated the relationships between managerial overconfidence, CSR activities, and financial performance. This research offers a particular qualitative approach in providing a new measurement of CEO overconfidence through computer-assisted textual analysis, by describing and interpreting characteristics of the management discussion and analysis (MD&A). Classified as overconfident or normal, CEOs prefer to choose more or fewer CSR activities, according to their characteristics. The long-term performance of a firm depends on its CSR activities as well as its financial situation. Specifically, if a firm is financial...

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Managerial Overconfidence, Corporate Social Responsibility Activities, and Financial Constraints

2019

View full text Add to dashboard Cite

show abstract

“…Nonetheless, these new energies were deeply affected by geographical conditions, climate, and other factors. To make full use of new energy, large‐scale energy storage equipment is in pressing need …”

Section: Introductionmentioning

confidence: 99%

“…To make full use of new energy, large-scale energy storage equipment is in pressing need. [5][6][7][8] VRFB is skilled in environmental friendliness, long life, and high efficiency. 9,10 In this regard, VRFB has a bright applying prospect in large-scale energy storage system.…”

Section: Introductionmentioning

confidence: 99%

Electrocatalytic performance of TiO ₂ with different phase state towards V ²⁺ /V ³⁺ reaction for vanadium redox flow battery

Cheng

et al. 2019

Int J Energy Res

View full text Add to dashboard Cite

Summary In this paper, titanium dioxide (TiO2) nanoparticles were employed as catalysts towards V2+/V3+ redox couple of vanadium redox flow battery (VRFB). The effect of TiO2 phase on the electrocatalytic performance for negative couple was systematically investigated. The electrochemical properties of TiO2 with different phase were assessed via cyclic voltammetry and electrochemical impedance spectroscopy by using AB as conductive agent. Obtained from the results, anatase TiO2 (α‐TiO2) exhibits superior electrocatalytic activity to rutile TiO2 (γ‐TiO2). The VRFB cell performs well at discharge capacity, voltage efficiency, and energy efficiency by employing α‐TiO2‐modified negative electrode with current density varying between 50 and 100 mA cm−2. The discharge capacity of α‐TiO2‐modified cell with vanadium ion concentration of 1.6 M comes up to 113.5 mA h at 100 mA cm−2 current density, which is increased by 39.1 mA h after modification for negative electrode. Moreover, the corresponding energy efficiency increases by 7.5% after modification of α‐TiO2. Experimental results show that TiO2 is an ideal catalyst for VRFB. Moreover, α‐TiO2 demonstrates superior electrocatalytic performance to γ‐TiO2 towards V2+/V3+ reaction.

show abstract

“…The energy problems have been paid more and more attention recently. All kinds of energy including solar energy have been developed [1][2][3][4]. Although lithium ion batteries (LIBs) based on organic electrolyte have gained great improvement as one of the most competitive energy conversion and storage systems with high energy/power density [5][6][7], their cost, safety, and large-rate charge/discharge characteristics are still the challenging issues which need to be solved in view of their large-scale use in electric vehicles and smart grids [8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Performance of Hybrid Cationic Aqueous-Based Rechargeable Battery with Different Current Collectors and Electrolytes

Shang

Tang

Zhang

et al. 2019

International Journal of Photoenergy

View full text Add to dashboard Cite

Different zinc foils as anode current collectors by electrowinning in various electrolytes with additives were prepared, which were evaluated through X-ray diffraction (XRD), scanning electron microscopy (SEM), float charge, and Tafel curve tests. The effect of different cathode current collectors, electrolytes, and the as-prepared zinc foils as the anode on the coulombic efficiency and the cycling performance of aqueous batteries were investigated. The results indicate that the initial coulombic efficiency and discharge capacity of the battery with 1 mol/L ZnSO4 and 2 mol/L Li2SO4 are 94.31% and 105.7 mAh/g using graphite as the current collector, which are much higher than 68.20% and 71.0 mAh/g using conductive polyethylene, respectively, attributed to the smaller polarization and electrochemical transfer impedance (Rct) of the former. However, the capacity retention of the latter is much higher than that of the former, especially using the high-concentration-lithium-based hybrid electrolyte, of which it is up to 74.63% even after 500 cycles. Moreover, the cycling performance of a battery with as-prepared zinc foil adding thiourea and gelatin into electrolyte during electrowinning is much better than that without additives, which is due to the smaller corrosion rate and side reaction.

show abstract

Stearic acid/expanded graphite as a composite phase change thermal energy storage material for tankless solar water heater

Cited by 130 publications

References 38 publications

Managerial Overconfidence, Corporate Social Responsibility Activities, and Financial Constraints

Managerial Overconfidence, Corporate Social Responsibility Activities, and Financial Constraints

Electrocatalytic performance of TiO ₂ with different phase state towards V ²⁺ /V ³⁺ reaction for vanadium redox flow battery

Electrochemical Performance of Hybrid Cationic Aqueous-Based Rechargeable Battery with Different Current Collectors and Electrolytes

Contact Info

Product

Resources

About

Stearic acid/expanded graphite as a composite phase change thermal energy storage material for tankless solar water heater

Cited by 130 publications

References 38 publications

Managerial Overconfidence, Corporate Social Responsibility Activities, and Financial Constraints

Managerial Overconfidence, Corporate Social Responsibility Activities, and Financial Constraints

Electrocatalytic performance of TiO 2 with different phase state towards V 2+ /V 3+ reaction for vanadium redox flow battery

Electrochemical Performance of Hybrid Cationic Aqueous-Based Rechargeable Battery with Different Current Collectors and Electrolytes

Contact Info

Product

Resources

About

Electrocatalytic performance of TiO ₂ with different phase state towards V ²⁺ /V ³⁺ reaction for vanadium redox flow battery