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One‐dimensional π–d conjugated coordination polymer for electrochromic energy storage device with exceptionally high performance

DOI: 10.1002/advs.201903109 DOI Help

Authors: Guofa Cai (Nanyang Technological University; Henan University) , Peng Cui (Nanyang Technological University; Henan University) , Wenxiong Shi (Nanyang Technological University; Tiangong University) , Samuel Morris (Nanyang Technological University) , Shi Nee Lou (Nanyang Technological University; Singapore‐HUJ Alliance for Research and Enterprise (SHARE); Pohang University of Science and Technology) , Jingwei Chen (Nanyang Technological University; Singapore‐HUJ Alliance for Research and Enterprise (SHARE)) , Jing‐hao Ciou (Nanyang Technological University) , Vinod K Paidi (Pohang Accelerator Laboratory) , Kug‐seung Lee (Pohang Accelerator Laboratory) , Shuzhou Li (Nanyang Technological University) , Pooi See Lee (Nanyang Technological University; Singapore‐HUJ Alliance for Research and Enterprise (SHARE))
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Advanced Science

State: Published (Approved)
Published: September 2020
Diamond Proposal Number(s): 21425

Open Access Open Access

Abstract: The rational design of previously unidentified materials that could realize excellent electrochemical‐controlled optical and charge storage properties simultaneously, are especially desirable and useful for fabricating smart multifunctional devices. Here, a facile synthesis of a 1D π–d conjugated coordination polymer (Ni‐BTA) is reported, consisting of metal (Ni)‐containing nodes and organic linkers (1,2,4,5‐benzenetetramine), which could be easily grown on various substrates via a scalable chemical bath deposition method. The resulting Ni‐BTA film exhibits superior performances for both electrochromic and energy storage functions, such as large optical modulation (61.3%), high coloration efficiency (223.6 cm2 C−1), and high gravimetric capacity (168.1 mAh g−1). In particular, the Ni‐BTA film can maintain its electrochemical recharge‐ability and electrochromic properties even after 10 000 electrochemical cycles demonstrating excellent durability. Moreover, a smart energy storage indicator is demonstrated in which the energy storage states can be visually recognized in real time. The excellent electrochromic and charge storage performances of Ni‐BTA films present a great promise for Ni‐BTA nanowires to be used as practical electrode materials in various applications such as electrochromic devices, energy storage cells, and multifunctional smart windows.

Journal Keywords: conjugated coordination polymers; electrochromism; energy storage; indicators; smart windows

Subject Areas: Materials, Chemistry, Energy

Instruments: I15-1-X-ray Pair Distribution Function (XPDF)

Added On: 01/10/2020 14:11


Discipline Tags:

Energy Storage Energy Physical Chemistry Energy Materials Chemistry Materials Science Polymer Science

Technical Tags:

Scattering Pair Distribution Function (PDF) Total Scattering