Article
Energy & Fuels
Aycan Atli, Abdullah Yildiz
Summary: An opaque platinum film as a counter electrode in dye-sensitized solar cells demonstrates enhanced reflectivity, smaller resistance, and excellent adhesion properties. As a result, the DSSC with the opaque platinum film achieves a higher electrical power conversion efficiency compared to the transparent platinum film under the same conditions.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
J. Luo, J. C. Liu, Z. Q. Zhao, S. H. Sun, Y. Zhu, Y. M. Hu
Summary: Orthogonal Cu3SnS4 (CTS) nano-crystals were synthesized, with Cu7S4 seeds forming first at 130 degrees C and orthorhombic CTS nano-crystals forming at 180 degrees C. Selenization at 500 degrees C for 20 minutes resulted in the formation of CTSXSe4-X, which showed good conductivity and electrocatalytic activity for I-3(-) reduction when used as counter electrodes in dye-sensitized solar cells. The optimal 1.7 μm thick CTSXSe4-X counter electrode achieved a power conversion efficiency of 7.57%.
Article
Physics, Applied
Mathew K. Francis, P. Balaji Bhargav, N. Santhosh, Nafis Ahmed, C. Balaji, R. Govindaraj
Summary: MoS2-based transition metal dichalcogenide nanoflowers were synthesized using the hydrothermal method in this study to examine their potential as a counter electrode in dye-sensitized solar cells (DSSCs). MoS2-HCP counter electrode showed better electrochemical performance with 5% power conversion efficiency achieved. The bifacial concept of DSSC was demonstrated with 2.2% power conversion efficiency under rear-side illumination.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Chemistry, Physical
Hina Pervaiz, Zuhair S. Khan, Nadia Shahzad, Ghulam Ali, Naseem Iqbal, Sofia Javed
Summary: This study introduces a method for synthesizing and depositing organic/inorganic composite ink for the preparation of counter electrodes in flexible dye-sensitized solar cells. The results demonstrate that the composite ink-based counter electrodes exhibit higher catalytic activity, power conversion efficiencies, and redox diffusion rate compared to traditional counter electrodes.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Energy & Fuels
Abdelaal S. A. Ahmed, Wanchun Xiang, Fatma S. M. Hashem, Xiujian Zhao
Summary: By preparing CB-SiO2 composite as CEs for DSSCs, higher electrocatalytic activity and power conversion efficiency can be achieved. Increasing the thickness of CE significantly enhances the performance of the devices.
Article
Physics, Applied
Xiu Yun Gu, En Zi Chen, Kun Wei, Lu Lu Chen, Chao Yue Zhang, Guo Wen Sun, Jun Ren Tan, Hua-Sheng Bi, Hang Xie, Geng Zhi Sun, Xia Gao, Xiao Jun Pan, Jin Yuan Zhou
Summary: This study utilized TiN nanorod arrays to design highly flexible fiber counter electrodes, improving the photoelectric conversion efficiency of dye-sensitized solar cells. Through optimization of the morphology of TiN nanorod arrays, an ultra-low decay rate close to zero was achieved.
APPLIED PHYSICS LETTERS
(2021)
Article
Chemistry, Inorganic & Nuclear
Lu Zhang, Weichao Chen, Ting Wang, Yunjiang Li, Chunhui Ma, Yuxiao Zheng, Jian Gong
Summary: This study presents a one-step strategy for loading PW11Co polyoxometalates on graphene-like Co0.85Se on conductive glass substrates, forming a transparent PW11Co/Co0.85Se composite counter electrode with excellent electrocatalytic performance. The efficiencies of DSSCs using this composite electrode are higher than those with Pt or pure Co0.85Se electrodes, marking the first use of polyoxometalates in bifacial DSSCs and expanding their application in photoelectronic devices.
INORGANIC CHEMISTRY FRONTIERS
(2021)
Article
Chemistry, Inorganic & Nuclear
Arimakula Chamatam Kasi Reddy, Maddala Gurulakshmi, Parnapalli Muni Mounika, Ambapuram Meenakshamma, Katta Venkateswarlu, Yorva Pedda Venkata Subbaiah, Mitty Raghavender
Summary: Counter electrodes (CEs) for dye-sensitized solar cells (DSSC) were fabricated using poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate (PEDOT:PSS) and platinum (Pt) solution, with high transparency and adhesion on an FTO glass substrate, through the Marker pen lithography coating method. The morphology and roughness of the PEDOT:PSS-MPL and Pt-MPL CEs were analyzed using scanning electron microscopy (SEM) and atomic force microscopy (AFM), while the electrochemical properties were evaluated using electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV). The device performance was assessed through current density-voltage (J-V) measurements, with the Pt-MPL and PEDOT:PSS-MPL CEs achieving power conversion efficiencies (PCE) of 4.25% and 3.00%, respectively, compared to dip coated PEDOT:PSS-DC and Pt-DC CEs.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Fan Yang, Yurui Gao, Pengcheng Zhao, Yuan He, Yuqiao Wang
Summary: In this study, 1D ZnO@C@MoS(2) nanoarrays on conducting glass were fabricated as an effective counter electrode for dye-sensitized solar cells. The power conversion efficiency reached 3.61% due to enhanced electron transfer and electrocatalytic activity.
Article
Chemistry, Multidisciplinary
Shanmuganathan Venkatesan, Wei-Hsun Lin, Tzu-Hsien Hsu, Hsisheng Teng, Yuh-Lang Lee
Summary: The research focuses on developing high-performance counter electrodes for bifacial dye-sensitized solar cells using nonplatinum material to achieve low-cost and high-efficiency solar cells. By controlling the thickness of the PEDOT film, higher cell performance was achieved. The newly developed sandwich photoelectrode structure exhibited higher efficiency for the solar cells.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Edoardo Marchini, Michele Orlandi, Nicola Bazzanella, Rita Boaretto, Vito Cristino, Antonio Miotello, Stefano Caramori, Stefano Carli
Summary: In this study, PEDOT/Nafion was electrodeposited on FTO and evaluated as a catalytic material in DSSCs based on either cobalt or copper electrolytes. The results showed that PEDOT/Nafion exhibited comparable or superior electrochemical response compared to PEDOT/ClO4 and PEDOT/PSS, and the films were more stable for delamination.
Article
Nanoscience & Nanotechnology
Subashini Gnanasekar, Andrews Nirmala Grace
Summary: The nanostructure of titanium nitride was studied and synthesized as a counter electrode for dye-sensitized solar cells, showing electrocatalytic activity comparable to platinum CE. The TiN NFB CE demonstrated high power conversion efficiency and stability, indicating potential application in replacing costly platinum CEs in large area DSSCs.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Ha Lim Cha, Seungyoon Seok, Hyun Jo Kim, Suresh Thogiti, Burragoni Sravanthi Goud, Gyuho Shin, Lee Ji Eun, Ganesh Koyyada, Jae Hong Kim
Summary: A new DSSC strategy using multiple dyes for full spectrum absorption was developed, with CO-DACE devices showing the highest efficiency compared to traditional DSSCs. This is attributed to enhanced IPCE and J(sc), highlighting the advantage of DACE electrode in maximizing incident light utilization.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Energy & Fuels
Adem Sarilmaz, Abdurrahman Ozen, Hasan Akyildiz, Sirin Siyahjani Gultekin, Mahmut Kus, Faruk Ozel
Summary: The study synthesized sulfide-based ternary and quaternary thiospinel nanocrystals as catalysts in DSSCs applications for the first time, instead of Pt. Results showed that CNT-CuCo2S4-based DSSCs had similar power conversion efficiency to Pt-based DSSCs, making them a promising novel counter electrode material for low-cost platinum-free solar cells.
Article
Chemistry, Multidisciplinary
Yiming Li, Jing Wang, Hao Wang, Zhichao Di, Mingyan Liu, Xueping Zong, Chunsheng Li, Yan Sun, Mao Liang, Zhe Sun
Summary: In this study, counter electrodes composed of aggregated PEDOT with high transparency and excellent electrochemical activity were applied to bifacial dye-sensitized solar cells. The cells achieved a high bifaciality of 0.92 and a maximum power production of 11.3% under realistic conditions.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Chengyi Wang, Zihe Zhang, Weiwei Liu, Qinming Zhang, Xin-Gai Wang, Zhaojun Xie, Zhen Zhou
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2020)
Article
Materials Science, Ceramics
Mingchao Wang, Chen Zeng, Yanrui Guo, Tong Wei, Zhaojie Feng, Jingfang Zhang, Jiachen Liu, Haijun Zhang
CERAMICS INTERNATIONAL
(2020)
Article
Chemistry, Physical
Haijun Zhang, Yue Wang, Xingyu Wang, Suting Zhou, Rourou Yu, Yunlong Liao, Jingde Li, Zhaoyang Tan
JOURNAL OF PHYSICAL CHEMISTRY A
(2020)
Article
Chemistry, Multidisciplinary
Letao Yang, Tae-Hyung Kim, Hyeon-Yeol Cho, Jeffrey Luo, Jong-Min Lee, Sy-Tsong Dean Chueng, Yannan Hou, Perry To-Tien Yin, Jiyou Han, Jong Hoon Kim, Bong Geun Chung, Jeong-Woo Choi, Ki-Bum Lee
Summary: Nanoparticle-based nucleic acid conjugates show great promise in cancer treatment and diagnosis, but face limitations. Recent research on hybrid graphene oxide/gold nanoparticles demonstrates the potential for multimodal imaging and combined therapies, paving the way for precision cancer treatment.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Haijun Zhang, Xuefang Meng, Qi Yang, Xiaomeng Zhou
Summary: The study reveals that C5F10O, as a perfluoroketone substance, exhibits desirable fire-extinguishing effectiveness and biosafety. Its pyrolysis generates perfluoroolefins, perfluoroalkanes, and highly active free radicals that efficiently capture radicals in the flame to interrupt the chain reactions of combustion. The thermal decomposition of C5F10O imposes a significant cooling effect on high-temperature fires and dilutes the combustible fuel-air mixture in the combustion region.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Physical
Sheng-Qi Guo, Haijun Zhang, Zhenzhong Hu, Mengmeng Zhen, Bo Yang, Boxiong Shen, Fan Dong
Summary: The study investigates the effect of composition ratio on the micro-structure and photocatalytic activity of semiconductor combinations using CNQD(n)@SnS2 heterojunction. Optimal composition results in efficient pollutant degradation, while excess composition hinders the separation of photo-induced charge carriers, reducing overall activity. This research provides insights for the rational design of highly active photocatalysts.
Article
Chemistry, Physical
Wen Wang, Xueqin Zuo, Qi Yang, Qun Yang, Huaibao Tang, Haijun Zhang, Guang Li
Summary: The synergistic effect of Fe/Fe3C nanocrystals and Fe-Nx coordination sites in the Fe-N-C catalyst significantly enhances the catalytic activity for the tri-iodide reduction reaction in DSSCs, leading to a higher power conversion efficiency of 9.37% compared to the traditional Pt CE. The abundant interfaces of Fe/Fe3C nanocrystals promote reactant adsorption and charge transfer, while the Fe-Nx configurations reduce charge density and expedite reaction kinetics. The unique structure of the NHCF matrix effectively utilizes all nanocrystals and provides a coupling bridge for optimal performance.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Materials Science, Multidisciplinary
Haijun Zhang, Kun Li, Mingchao Wang, Jingfang Zhang
Summary: MFLDH/alpha-ZrP(U) composite was prepared through a stripping-recombination process under ultrasonication, showing a homogeneous layered structure in SEM results, and exhibited improved flame retardancy and mechanical properties when incorporated into epoxy resin.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Chemistry, Analytical
Meiling Lian, Shuaibin Shao, Meihan Liu, Yuqing Shi, Haijun Zhang, Da Chen
Summary: The development of nanostructured hybrid nanoparticles with cell membrane coating allows for highly sensitive and specific detection of cancer cells, as well as therapeutic applications through mimetic enzyme activity. This novel approach offers a new avenue for targeted nanomaterials in cancer diagnosis and treatment.
Article
Chemistry, Multidisciplinary
Xiutao Li, Feng Zhang, Mengjie Zhang, Xiaomeng Zhou, Haijun Zhang
Summary: The Y-based MOF exhibited the best flame retardancy due to its strong catalytic carbonizing and radical-trapping abilities. Results from thermogravimetric analysis, limiting oxide index, UL-94, and cone calorimeter tests showed that the flame retardancy performance of Y-MOF was significantly better than La-MOF and Ce-MOF.
Article
Nanoscience & Nanotechnology
Haijun Zhang, Yiru Di, Qi Yang, Xiaomeng Zhou
Summary: A novel and nanoscale hybrid flame retardant was designed in this study, incorporating LDH nanosheets, -OH-functionalized CNTs, and HA nanoparticles, demonstrating significant flame retardation performance and improved mechanical strength for EP resins. The synergistic effect among LDH, CNT(-OH), and HA components contributed to the remarkable flame-retarding properties of the newly designed flame retardant.
ACS APPLIED NANO MATERIALS
(2021)
Review
Chemistry, Applied
Jingfang Zhang, Zilong Liang, Jingxuan Liu, Yange Wan, Xin Tao, Haijun Zhang, Mingchao Wang
Summary: This study investigated the synergistic effects of palygorskite and expandable graphite on water-based intumescent fire retardant coatings. The results showed that the coatings with 3% of each additive exhibited the best fire retardant performance, including lower backside temperature, higher LOI value, and the highest flammability rating.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Materials Science, Multidisciplinary
Qi Yang, Yixiao Jia, Xiaomeng Zhou, Haijun Zhang
Summary: The study successfully constructed a flame retardant LDH-CNT-DOPO composite material and demonstrated its great potential in improving aircraft fire safety.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Juanjuan Zhao, Hao Tan, Zhenfa Zi, Li Song, Haibo Hu, Haijun Zhang, Mingzai Wu
Summary: By coupling in situ generated CoS nanoparticles with a dual-heteroatom-doped layered carbon framework, a hybrid Co-based catalyst is synthesized, which significantly enhances the energy efficiency of zinc-air batteries.
Article
Chemistry, Physical
Suting Zhou, Qi Yang, Haijun Zhang, Xiaomeng Zhou
Summary: This study investigated the thermal decomposition and fire suppression mechanisms of HFO-1234yf, HCFO-1233xf, and 2-BTP agents, and found that they exhibit good fire-extinguishing performance compared to other HFO and HFC agents. These agents contribute to fire suppression by generating different radicals, with the Br· and CF3· radicals playing a significant role in achieving the best fire-suppressing effect.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)